31 results on '"Cristian Ortiz"'
Search Results
2. Achilles tendoscopy for non insertional Achilles tendinopathy. A case series study
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Cristian Ortiz, Diego Zanolli, Pablo Wagner, Emilio Wagner, Andres Keller, and Nicola Maffulli
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Adult ,Male ,medicine.medical_specialty ,Sports injury ,medicine.medical_treatment ,Achlles tendon ,Achilles Tendon ,03 medical and health sciences ,0302 clinical medicine ,Endoscopic assisted ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Insertional Achilles tendinopathy ,Surgical treatment ,Functional result ,Aged ,Retrospective Studies ,030222 orthopedics ,Rehabilitation ,Achilles tendinopathy ,business.industry ,Endoscopic treatment ,Endoscopy ,030229 sport sciences ,Evidence-based medicine ,Middle Aged ,medicine.disease ,Surgery ,Tendon ,Treatment Outcome ,medicine.anatomical_structure ,Tendinopathy ,Female ,business ,Case series - Abstract
Background Achilles non-insertional tendinopathy is usually treated with conservative means. If resistant to a rehabilitation protocol surgical treatment could be proposed. The aim of this research is to report the mid-term clinical results of endoscopic assisted surgery for patients suffering from recalcitrant painful non-insertional Achilles tendinopathy. Methods A consecutive series of 11 patients (6 men and 5 women), median age of 54 (range 40–67) years, with chronic recalcitrant painful non-insertional Achilles tendinopathy were included. All patients completed at least 20 physical therapy sessions and 6 months of no sports activities before surgery. All underwent Achilles tendoscopy, without tendon excision or transfer with a median follow-up of 87 (27–105) months. We report the preoperative symptoms duration, treatment before surgery, complications and satisfaction after surgery, return to previous sport level, and postoperative VISA-A score. Results Mean preoperative symptoms duration was 1 year, having all performed at least 20 physical therapy sessions. No postoperative complications were reported, achieving a complete satisfaction in 10 of 11 patients. All patients returned to their preoperative sports level with a median postoperative VISA-A functional score of 100 (30–100) points. Conclusions The mid-term results of Achilles tendoscopy in patients with chronic painful non-insertional Achilles tendinopathy are satisfactory with a rapid rehabilitation. This procedure is safe and has a low complication rate. Level of Evidence: IV. Retrospective case series.
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- 2020
3. Achilles tendon reconstruction combining a modified Dresden technique and endoscopic flexor hallucis longus transfer
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Felipe Chaparro, Cristian Ortiz, Felipe Silva, Giovanni Carcuro, Mario Escudero, and Manuel J. Pellegrini
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medicine.medical_specialty ,Tendon transfer ,medicine.medical_treatment ,Neuritis ,Achilles tendon/injuries ,lcsh:Medicine ,Achilles tendon/surgery ,Endoscopy/methods ,Patient satisfaction ,lcsh:Orthopedic surgery ,medicine ,Performed Procedure ,Achilles tendon ,business.industry ,Wound dehiscence ,Reconstructive surgical procedures/methods ,lcsh:R ,medicine.disease ,Tendon ,Surgery ,lcsh:RD701-811 ,medicine.anatomical_structure ,Achilles tendon rupture ,medicine.symptom ,business - Abstract
Objective: The purpose of this paper is to describe a minimally invasive chronic Achilles tendon rupture reconstruction combining a modified Dresden technique and endoscopic flexor hallucis longus (FHL) tendon transfer. Methods: Our prospectively collected database was queried for patients presenting with chronic Achilles tendon rupture. Patients were included if they presented any of the following criteria: more than 65 years of age, history of previous DVT, active smoking habit and Diabetes. Pre and post-operative SF-36 and AOFAS hindfoot scores, complications, and patient satisfaction grades were recorded. Results: Eight patients met the inclusion criteria; the median age was 49 years old (range 22 - 67 years). Two complications were registered (sural neuritis and minor wound dehiscence). Mean AOFAS score increased from 48 (range 40 - 63) to 91,6 (range 85 - 95). Regarding SF-36 score, the SFF-36 improved from 51,6 to 79,3 points and the SFM-36 enhance from 25 to 61,5 points. All patients evaluated their satisfaction regarding the performed procedure as satisfactory. Conclusion: Chronic Achilles tendon rupture reconstruction combining a modified Dresden technique and endoscopic FHL transfer is an attractive option in high-risk patients, with favorable results at the short-term follow-up. Level of Evidence IV; Therapeutic Study; Case Series.
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- 2020
4. Molecular landscape of thymic epithelial tumors
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Cristian Ortiz-Villalón and Julia Prays
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Pathology ,medicine.medical_specialty ,Thymoma ,Thymus Neoplasms ,Gene mutation ,Biology ,Anterior mediastinum ,medicine.disease ,Pathology and Forensic Medicine ,Chromosomal Abnormality ,Mutation ,medicine ,Humans ,Neoplasms, Glandular and Epithelial ,Thymic carcinoma - Abstract
Thymic epithelial tumors (TETs) are extremely rare and represent the most frequent tumors of the anterior mediastinum originating from epithelial cells in the thymus. Thymic epithelial tumors include thymomas (TM), thymic carcinomas (TC) and thymic neuroendocrine neoplasms (TNEN). Thymomas are the most predominant and are associated with autoimmune diseases. The available data suggests that the different histological subtypes have specific molecular alterations. Thymic carcinoma shows recurrent gene mutations, but further investigations are needed to understand the role of those mutations in the pathogenetic of the TETs. Some of the new emerging identified molecular alterations have the potential to offer new targeted therapies opening new possibilities for the treatment of thymic epithelial tumors.
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- 2021
5. A gene expression-based single sample predictor of lung adenocarcinoma molecular subtype and prognosis
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Mats Jönsson, Anders Vikström, Helena Liljedahl, Johan Staaf, Annelie F. Behndig, Maria Planck, Annette Salomonsson, Anna Karlsson, Aziz Hussein, Cristian Ortiz-Villalón, Annika Patthey, Elsa Arbajian, Gigja Erlingsdottir, Gudrun N. Oskarsdottir, Bengt Bergman, Hirsh Koyi, Eva Brandén, Sofi Isaksson, Mikael Johansson, Luigi De Petris, Hans Brunnström, and Nastaran Monsef
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Oncology ,single sample predictor ,Male ,Cancer Research ,medicine.medical_specialty ,Lung Neoplasms ,Tumor Markers and Signatures ,Datasets as Topic ,Adenocarcinoma of Lung ,Disease ,Risk Assessment ,Disease-Free Survival ,03 medical and health sciences ,0302 clinical medicine ,Predictive Value of Tests ,Risk Factors ,Internal medicine ,medicine ,Biomarkers, Tumor ,Humans ,Lung cancer ,Gene ,Lung ,Survival analysis ,Neoplasm Staging ,molecular subtypes ,Cancer och onkologi ,Models, Genetic ,business.industry ,Gene Expression Profiling ,Hazard ratio ,gene expression ,lung adenocarcinoma ,prognosis ,medicine.disease ,Prognosis ,Confidence interval ,Gene Expression Regulation, Neoplastic ,030220 oncology & carcinogenesis ,Cancer and Oncology ,Medical genetics ,Adenocarcinoma ,Female ,Neoplasm Recurrence, Local ,business ,Algorithms - Abstract
Disease recurrence in surgically treated lung adenocarcinoma (AC) remains high. New approaches for risk stratification beyond tumor stage are needed. Gene expression‐based AC subtypes such as the Cancer Genome Atlas Network (TCGA) terminal‐respiratory unit (TRU), proximal‐inflammatory (PI) and proximal‐proliferative (PP) subtypes have been associated with prognosis, but show methodological limitations for robust clinical use. We aimed to derive a platform independent single sample predictor (SSP) for molecular subtype assignment and risk stratification that could function in a clinical setting. Two‐class (TRU/nonTRU=SSP2) and three‐class (TRU/PP/PI=SSP3) SSPs using the AIMS algorithm were trained in 1655 ACs (n = 9659 genes) from public repositories vs TCGA centroid subtypes. Validation and survival analysis were performed in 977 patients using overall survival (OS) and distant metastasis‐free survival (DMFS) as endpoints. In the validation cohort, SSP2 and SSP3 showed accuracies of 0.85 and 0.81, respectively. SSPs captured relevant biology previously associated with the TCGA subtypes and were associated with prognosis. In survival analysis, OS and DMFS for cases discordantly classified between TCGA and SSP2 favored the SSP2 classification. In resected Stage I patients, SSP2 identified TRU‐cases with better OS (hazard ratio [HR] = 0.30; 95% confidence interval [CI] = 0.18‐0.49) and DMFS (TRU HR = 0.52; 95% CI = 0.33‐0.83) independent of age, Stage IA/IB and gender. SSP2 was transformed into a NanoString nCounter assay and tested in 44 Stage I patients using RNA from formalin‐fixed tissue, providing prognostic stratification (relapse‐free interval, HR = 3.2; 95% CI = 1.2‐8.8). In conclusion, gene expression‐based SSPs can provide molecular subtype and independent prognostic information in early‐stage lung ACs. SSPs may overcome critical limitations in the applicability of gene signatures in lung cancer., What's new? New tools are needed in order to improve risk stratification and therapy selection in early‐stage lung adenocarcinoma. Inherent differences in gene expression between adenocarcinoma subtypes could facilitate the development of such tools. The authors of this study derived platform‐independent, single‐sample predictors (SSP) of adenocarcinoma subtypes, based on gene expression. Derived SSPs successfully provided prognostic information in surgically treated stage I lung adenocarcinoma patients. The single‐sample classifier was readily translated into assays applicable to archival tissue, indicating clinical utility. The findings highlight the clinical relevance of transcriptional signatures and gene expression predictors in lung adenocarcinoma, warranting their further investigation and development.
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- 2021
6. Foot and Ankle Endoscopy
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Emilio Wagner, Cristian Ortiz, and Nathaly Caicedo
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Achilles tendon ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Perioperative ,medicine.disease ,Surgery ,Endoscopy ,medicine.anatomical_structure ,Deformity ,medicine ,Calcaneus ,medicine.symptom ,Ankle ,Tendinopathy ,business ,Foot (unit) - Abstract
Achilles endoscopic surgery is a minimally invasive option that has been described to manage different pathologies related to the Achilles tendon, including non-insertional Achilles tendinopathy, Haglund’s deformity, equinus contracture, even Achilles ruptures. Tendoscopic surgery minimizes the risk for some of the complications associated with open surgery, such as scarring, perioperative pain, and wound complications, and it may also provide a faster recovery. No clear guidelines have been established related to the efficacy of the endoscopic technique in Achilles tendinopathy. Only small series have been reported, and over different populations with varying degrees of tendinopathic compromise, which makes it even harder to give recommendations on its use. The indication for tendinoscopy in non-insertional Achilles tendinopathy is becoming more accepted, with good results and good outcomes consistently reported with few or no complications. As already said, these studies are limited by their low number of patients and retrospective nature, and therefore on a review of the literature performed in 2014 by Cychosz et al., a grade C recommendation (for intervention) to the Achilles tendoscopy was given. No evidence-based recommendation has been given to tendinoscopy for insertional Achilles tendinopathy, and more information and well-designed studies are needed to further elucidate the role of impingement against the calcaneus. The authors believe that this is a promising area for further research where limited surgical approaches will have an important role in the future.
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- 2020
7. The prognostic implications of Notch1, Hes1, Ascl1, and DLL3 protein expression in SCLC patients receiving platinum-based chemotherapy
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Lena Kanter, Cristian Ortiz-Villalón, Salomon Tendler, Kristina Viktorsson, Luigi De Petris, and Rolf Lewensohn
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Male ,0301 basic medicine ,Oncology ,Lung Neoplasms ,medicine.medical_treatment ,Protein Expression ,Cancer Treatment ,Biochemistry ,Lung and Intrathoracic Tumors ,Small Cell Lung Cancer ,0302 clinical medicine ,Medicine and Health Sciences ,Basic Helix-Loop-Helix Transcription Factors ,Receptor, Notch1 ,Multidisciplinary ,Pharmaceutics ,Intracellular Signaling Peptides and Proteins ,Middle Aged ,Prognosis ,Gene Expression Regulation, Neoplastic ,Treatment Outcome ,030220 oncology & carcinogenesis ,Cohort ,Immunohistochemistry ,Biomarker (medicine) ,Medicine ,Female ,Research Article ,Clinical Oncology ,medicine.medical_specialty ,Science ,Antineoplastic Agents ,Research and Analysis Methods ,Cancer Chemotherapy ,03 medical and health sciences ,Drug Therapy ,Refractory ,Diagnostic Medicine ,Internal medicine ,Gene Expression and Vector Techniques ,Biomarkers, Tumor ,medicine ,Chemotherapy ,Humans ,Molecular Biology Techniques ,Lung cancer ,Immunohistochemistry Techniques ,Molecular Biology ,Survival analysis ,Aged ,Platinum ,Molecular Biology Assays and Analysis Techniques ,business.industry ,Cancers and Neoplasms ,Biology and Life Sciences ,Membrane Proteins ,medicine.disease ,Small Cell Lung Carcinoma ,Survival Analysis ,Confidence interval ,Histochemistry and Cytochemistry Techniques ,030104 developmental biology ,Immunologic Techniques ,Transcription Factor HES-1 ,Clinical Medicine ,business ,Biomarkers - Abstract
ObjectivesThe aim was to analyse the tumor expression of Notch1, Hes1, Ascl1, and DLL3 in Small-Cell Lung Cancer (SCLC) and each such biomarker's potential association with clinical characteristics and prognosis after platinum-doublet chemotherapy (PDCT).Material and methodsThe protein expression of the biomarkers was evaluated using immunohistochemistry. Patients were categorized according to their sensitivity to first line PDCT: with a Progression-free survival (PFS) ≥ 3 months after completion of treatment considered "sensitive" and < 3 months after completion of treatment considered "refractory". PFS and overall survival were computed using Kaplan-Meier curves with 95% confidence interval.Results and conclusionThe study included 46 patients, with 21 and 25 of the patients having "sensitive" and "refractory" disease, respectively. The majority of patients had a high DLL3 expression (n = 38), while a minority had Notch 1-high expression (n = 10). The chi-square test showed that there was a statistically significant negative association between Notch1 and Ascl1 expression (p = 0.013). The overall survival for patients with Notch1- high vs. low expression was 8.1 vs. 12.4 months, respectively (p = 0.036). Notch1 expression was an independent prognostic factor in the multivariate analysis (p = 0.02). No other biomarker showed any prognostic impact in this highly selected SCLC cohort. DLL3 is highly expressed in the majority of advanced staged SCLC cases, as expected. In the same patient population, Notch1 expression might have a potential prognostic implication, by driving a non-neuroendocrine differentiation process. Given the small number of cases with Notch1 high expression, the results of this study needs to be confirmed on a larger cohort.
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- 2020
8. FP16.04 A Nationwide Population-Based Mapping of Mutations and Gene Fusions in Lung Cancer Among Never-Smokers
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L. de Petris, Johan Staaf, Hans Brunnström, Maria Planck, Nastaran Monsef, Anders Behndig, Kristina Lamberg, Gunnar Wagenius, Rolf Lewensohn, Gisela Helenius, Johan Botling, Annika Patthey, Bengt Bergman, Aziz Hussein, Magnus Kentson, Hirsh Koyi, U. Mager, Anders Vikström, Cristian Ortiz-Villalón, Mattias Johansson, J. Sundh, Eva Brandén, Magnus P. Jonsson, and Annette Salomonsson
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Pulmonary and Respiratory Medicine ,Never smokers ,Oncology ,medicine.medical_specialty ,business.industry ,Internal medicine ,medicine ,Population based ,Lung cancer ,medicine.disease ,business ,Gene - Published
- 2021
9. Hallux Varus and Plantar Plate Repair
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Emilio Wagner and Cristian Ortiz
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Orthodontics ,030222 orthopedics ,business.industry ,030229 sport sciences ,medicine.disease ,Hallux varus ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Medicine ,Orthopedics and Sports Medicine ,Surgery ,Plantar plate ,business - Published
- 2017
10. Knotless Modified Arthroscopic-Broström Technique for Ankle Instability
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Eric Giza, Jesus Sevillano, Cristian Ortiz, Manuel J. Pellegrini, and Giovanni Carcuro
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Adult ,Joint Instability ,Male ,medicine.medical_specialty ,Adolescent ,03 medical and health sciences ,Arthroscopy ,0302 clinical medicine ,Suture (anatomy) ,Suture Anchors ,medicine ,Humans ,Orthopedics and Sports Medicine ,Ankle instability ,030222 orthopedics ,business.industry ,Suture Techniques ,Anterior talofibular ligament ,Sequela ,030229 sport sciences ,medicine.disease ,Nonoperative treatment ,Surgery ,medicine.anatomical_structure ,Ligament ,Sprains and Strains ,Distal fibula ,Female ,Ankle ,business ,Lateral Ligament, Ankle - Abstract
Instability is a common sequela after repeated ankle sprains. When nonoperative treatment fails, open lateral ligament complex repair and reinforcement with the inferior extensor retinaculum has been the gold standard procedure. The recent advancements in arthroscopic techniques have created comparable biomechanical and functional results to open procedures. The authors’ modification to the standard arthroscopic technique permits ligament approximation to the distal fibula over a larger surface area, using knotless anchors to avoid the need of an accessory portal and limit potential suture knot–related complications. Level of Evidence: Level V, expert opinion.
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- 2019
11. Arthrodesis of the Hallux Metatarsophalangeal Joint
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Cristian Ortiz, Emilio Wagner, and Pablo Wagner
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Dorsum ,medicine.medical_specialty ,Scientific Articles ,Surgical approach ,biology ,business.industry ,Arthrodesis ,medicine.medical_treatment ,Osteoarthritis ,biology.organism_classification ,medicine.disease ,Surgery ,Locking plate ,Valgus ,Hallux rigidus ,Lag screw ,Medicine ,Orthopedics and Sports Medicine ,business - Abstract
[Introduction][1] Arthrodesis of the first metatarsophalangeal joint is the most reliable surgical option, with a low complication rate, for hallux rigidus from end-stage osteoarthritis. [Step 1: Surgical Approach][2] Make a medial approach, following the mid-axis of the joint. [Step 2: Joint Preparation][3] Using a cup-cone configuration provides excellent bone exposure, construct stability, and metatarsophalangeal joint congruity. [Step 3: Positioning of Arthrodesis][4] Fix the toe in 5° to 10° of valgus and elevated 5 mm from the floor to achieve desired dorsiflexion. [Step 4: Application of Implants][5] Achieve a stable construct with a crossed lag screw and a dorsal locking plate (a hybrid construct). [Step 5: Closure][6] Perform a standard soft-tissue closure. [Step 6: Postoperative Care][7] Allow weight-bearing as tolerated after two weeks and impact exercises only after bone healing has been shown on radiographs, which can take up to ten weeks. [Results][8] Arthrodesis of the metatarsophalangeal joint in the hallux provides good results in terms of patient satisfaction and function, as demonstrated in many studies, most of them retrospective. [Indications][9] [Contraindications][10] [Pitfalls & Challenges][11] [Introduction][1] Arthrodesis of the first metatarsophalangeal joint is the most reliable surgical option, with a low complication rate, for hallux rigidus from end-stage osteoarthritis. [Step 1: Surgical Approach][2] Make a medial approach, following the mid-axis of the joint. [Step 2: Joint Preparation][3] Using a cup-cone configuration provides excellent bone exposure, construct stability, and metatarsophalangeal joint congruity. [Step 3: Positioning of Arthrodesis][4] Fix the toe in 5° to 10° of valgus and elevated 5 mm from the floor to achieve desired dorsiflexion. [Step 4: Application of Implants][5] Achieve a stable construct with a crossed lag screw and a dorsal locking plate (a hybrid construct). [Step 5: Closure][6] Perform a standard soft-tissue closure. [Step 6: Postoperative Care][7] Allow weight-bearing as tolerated after two weeks and impact exercises only after bone healing has been shown on radiographs, which can take up to ten weeks. [Results][8] Arthrodesis of the metatarsophalangeal joint in the hallux provides good results in terms of patient satisfaction and function, as demonstrated in many studies, most of them retrospective. [Indications][9] [Contraindications][10] [Pitfalls & Challenges][11] [1]: #sec-10 [2]: #sec-11 [3]: #sec-12 [4]: #sec-13 [5]: #sec-14 [6]: #sec-15 [7]: #sec-16 [8]: #sec-17 [9]: #sec-19 [10]: #sec-20 [11]: #sec-21
- Published
- 2018
12. Clinicopathological significance of the expression of PD-L1 in non-small cell lung cancer
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Junya Fukuoka, Kati Lindström, Felix Alarcón, Ozan Aricak, Ricardo Guijarro, Cristian Ortiz-Villalón, Hoa H.N. Pham, Oscar Grundberg, Akira Yoshikawa, Luigi De Petris, Anja C. Roden, M. Angeles Montero, Loránd L. Kis, and Richard Attanoos
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Adult ,Male ,0301 basic medicine ,Oncology ,medicine.medical_specialty ,Pathology ,Lung Neoplasms ,Adenocarcinoma ,B7-H1 Antigen ,Pathology and Forensic Medicine ,03 medical and health sciences ,0302 clinical medicine ,Carcinoma, Non-Small-Cell Lung ,PD-L1 ,Internal medicine ,Biomarkers, Tumor ,medicine ,Carcinoma ,Humans ,Lung cancer ,Aged ,Neoplasm Staging ,Retrospective Studies ,Aged, 80 and over ,Tissue microarray ,biology ,business.industry ,Large cell ,Histology ,General Medicine ,Middle Aged ,Prognosis ,medicine.disease ,Immunohistochemistry ,Survival Analysis ,Clone Cells ,030104 developmental biology ,030220 oncology & carcinogenesis ,Carcinoma, Squamous Cell ,biology.protein ,Carcinoma, Large Cell ,Female ,Immunotherapy ,business - Abstract
PD1/PD-L1 pathway targeting therapies are nowadays an established treatment option for patients with NSCLC. We assessed whether PD-L1 expression in NSCLC tumor cells was associated with specific clinical features or overall survival using four different clones.A retrospective study included formalin-fixed paraffin embedded (FFPE) surgical tumors from 482 patients. PD-L1 status was assessed with immunohistochemistry in tumor cells on tissue microarrays using clones 28-8, 22C3, SP263 and SP142. Associations with OS were assessed by Kaplan-Meier and multivariate Cox's regression analysis. Patients' median age: 68 years (39-86); histology: adenocarcinoma (AdCa) 61%, squamous-cell carcinoma (SqCC) 33%, and large cell carcinoma (LCC) 6%; p-stage: IA (46%), IB (30%), IIA (10%), IIB (11,4%), IIIA (1,2%), IIIB - IV (0,4%). PD-L1 positivity (≥1%) in NSCLC for clones 28-8, 22C3, SP263, SP142 was 41.5%, 34.2%, 42.7%, 10.4%, respectively (Pearson Chi-square p 0.0001). PD-L1 expression was correlated with histology, tumor size and grading. Statistically significant association between PD-L1 expression and OS in NSCLC and Non-AdCa was observed with clone SP142 (log-rank p = 0.045 and p = 0.05, respectively). Statistically significant association between PD-L1 expression and OS in LCC was observed with clones 22C3 (log-rank p = 0.009) and SP263 (log-rank p = 0.050).Overexpression of the PD-L1 clone SP142 was associated with poor overall survival in NSCLC and Non-AdCa. Clones 22C3 and SP263 were associated with poor prognosis in LCC. PD-L1 status might serve as a prognostic marker in NSCLC.
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- 2021
13. 'Angle to Be Corrected' in Preoperative Evaluation for Hallux Valgus Surgery
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Daniel Fischman, Cristian Ortiz, Omar Vela, Emilio Wagner, Pablo Wagner, and Gabriel Cavada
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Male ,medicine.medical_specialty ,Interobserver reliability ,Radiography ,03 medical and health sciences ,0302 clinical medicine ,Preoperative Care ,medicine ,Humans ,Orthopedics and Sports Medicine ,Hallux Valgus ,Metatarsal Bones ,Valgus deformity ,Observer Variation ,030222 orthopedics ,biology ,business.industry ,Significant difference ,030229 sport sciences ,Middle Aged ,medicine.disease ,biology.organism_classification ,Surgery ,Valgus ,Female ,business - Abstract
Background: The most common methods for assessing severity of hallux valgus deformity and the effects of an operative procedure are the angular measurements in weightbearing radiographs, specifically the hallux valgus angle and intermetatarsal angle (IMA). Our objective was to analyze the interobserver variability in hallux valgus patients of a new angle called the “angle to be corrected” (ATC), and to compare its capacity to differentiate between different deformities against IMA. Methods: We included 28 symptomatic hallux valgus patients with 48 weightbearing foot x-rays. Three trained observers measured the 1 to 2 IMA and the ATC. We then identified retrospectively 45 hallux valgus patients, which were divided into 3 operative technique groups having used the ATC as reference, and analyzed the capacity of the IMA to differentiate between them. Results: The IMA average value was 13.6 degrees, and there was a significant difference between observer 3 and observer 1 ( P = .001). The average value for the ATC was 8.9 degrees, and there was no difference between observers. Both angles showed a high intraclass correlation. Regarding the capacity to differentiate between operative technique groups, the ATC was different between the 3 operative technique groups analyzed, but the IMA showed differences only between 2. Conclusions: The ATC was at least as reliable as the intermetatarsal angle for hallux valgus angular measurements, showing a high intraclass correlation with no interobserver difference. It can be suggested that the ATC was better than the IMA to stratify hallux valgus patients when deciding between different operative treatments. Level of Evidence: Level III, comparative study.
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- 2015
14. P1.14-37 Lung Cancer in Never-Smokers: A Nationwide Population Based Mapping of Targetable Alterations
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Anders Vikström, Nastaran Monsef, Mattias Johansson, Aziz Hussein, R. Lewensohn, Maria Planck, Eva Brandén, L. De Petris, Hans Brunnström, Bo Bergman, Annika Patthey, Cristian Ortiz-Villalón, K. Lamberg Lundström, Johan Botling, Hirsh Koyi, Magnus P. Jonsson, Johan Staaf, Christel Reuterswärd, Gunnar Wagenius, Anders Behndig, and Annette Salomonsson
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Pulmonary and Respiratory Medicine ,Never smokers ,Oncology ,medicine.medical_specialty ,business.industry ,Internal medicine ,medicine ,Population based ,Lung cancer ,medicine.disease ,business - Published
- 2019
15. Mutational status predicts the risk of thromboembolic events in lung adenocarcinoma
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Karl Kölbeck, Cristian Ortiz-Villalón, Nicola Murgia, Magnus Sköld, Emil Wiklundh, Giovanni Ferrara, and Elsa Davidsson
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Pulmonary and Respiratory Medicine ,Oncology ,Pathology ,medicine.medical_specialty ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,NO ,Targeted therapy ,03 medical and health sciences ,0302 clinical medicine ,Non-small cell lung cancer ,Internal medicine ,Thromboembolism ,medicine ,Anaplastic lymphoma kinase ,Epidermal growth factor receptor ,cardiovascular diseases ,Original Research Article ,Risk factor ,Lung cancer ,Predictive testing ,lcsh:RC705-779 ,Gynecology ,Tyrosine kinase inhibitors ,Chemotherapy ,Lung ,Mutation ,Precision medicine ,biology ,Proportional hazards model ,business.industry ,Cancer ,lcsh:Diseases of the respiratory system ,medicine.disease ,respiratory tract diseases ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,biology.protein ,Adenocarcinoma ,business ,Tyrosine kinase - Abstract
Introduction: Cancer is a well-known risk factor of thromboembolism (VTE) and lung adenocarcinoma is associated with an increased risk. Mutation analyses of epidermal growth factor receptor (EGFR) and anaplastic lymphoma kinase (ALK) identify subgroups of lung adenocarcinoma with different epidemiological and clinical features. How the mutational status affects the risk of VTE is still unknown. Aims: To evaluate the occurrence of VTE in patients with EGFR and ALK mutations compared with non-mutated lung adenocarcinoma. Material and Methods: A retrospective longitudinal design was used. Patients with lung adenocarcinoma diagnosed and/or treated at Karolinska University Hospital, Stockholm, Sweden between the years 2009-20015 were included. All patients underwent a predictive test, divided in 3 subgroups based on the predictive tests result (EGFR- or ALK-mutated, no detected mutation). Event-free time of patients by their mutation status and treatment was assessed using cox regression analysis. Results: 310 patients were included. A VTE occurred in 24.2% of the patients. Mutation of EGFR was associated with a decreased risk (HR 0.35, 95%CI 0.17-0.69, p=0.003) in similarity with ALK-mutated lung adenocarcinomas (HR 0.44, 95%CI 0.21-0.91, p=0.03). Treatment with thyrosin-kinase inhibitors (TKI) seems to further reduce the risk of VTE compared to other treatments (HR 0.18, 95%CI 0.06-0.49, p=0.001). Conclusions: The results of this study indicate that patients with adenocarcinoma bearing a EGFR or ALK mutation have a decreased risk of VTE compared with other patients with lung adenocarcinoma. Targeted therapy with TKI seems to be safer and to reduce risk of VTE compared to standard chemotherapy.
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- 2017
16. Rotational Osteotomy for Hallux Valgus. A New Technique for Primary and Revision Cases
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Pablo Wagner, Cristian Ortiz, and Emilio Wagner
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medicine.medical_treatment ,Special Focus: Revision Forefoot Surgery – How to Improve? ,Osteotomy ,surgical technique ,03 medical and health sciences ,0302 clinical medicine ,Deformity ,medicine ,Orthopedics and Sports Medicine ,hallux valgus ,Varus deformity ,Orthodontics ,030222 orthopedics ,biology ,business.industry ,030229 sport sciences ,Wedge resection ,biology.organism_classification ,medicine.disease ,Sagittal plane ,Valgus ,Transverse plane ,medicine.anatomical_structure ,Coronal plane ,Surgery ,rotational correction ,medicine.symptom ,business ,osteotomy - Abstract
More than 200 different surgical techniques exist for hallux valgus (HV). Some of them are designed for mild, moderate, or severe deformities depending on their correction power. Nevertheless, they all correct only the coronal and/or sagittal plane deformity. Just a handful of them correct the known axial malrotation that exists in most HV cases. This malrotation is one possible factor that could be the source of recurrence of an operated HV as it has been described. We describe a new technique which simultaneously corrects the metatarsal internal rotation and varus deformity by rotating the metatarsal through an oblique plane osteotomy. This is performed with no bone wedge resection. Also, there is a broader bone surface contact than on a transverse proximal osteotomy. This technique is easy to remember and relatively simple to perform in primary and revision cases. The authors results show that it is as safe and effective as other procedures, with some advantages to be discussed. Levels of evidence Diagnostic Level 5. See Instructions for Authors for a complete description of levels of evidence.
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- 2017
17. MA21.07 A Nation-Wide Population-Based Mapping of Targetable Alterations in Smoking-Independent Lung Cancer
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Johan Botling, Nastaran Monsef, Annette Salomonsson, Christel Reuterswärd, Gunnar Wagenius, Aziz Hussein, Hans Brunnström, Johan Staaf, Anders Vikström, Cristian Ortiz-Villalón, Kristina Lamberg, Annelie F. Behndig, Magnus P. Jonsson, Eva Brandén, Hirsh Koyi, Maria Planck, Annika Patthey, Mikael Johansson, L. De Petris, and Bo Bergman
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Pulmonary and Respiratory Medicine ,Oncology ,medicine.medical_specialty ,Lung ,business.industry ,Population based ,respiratory system ,medicine.disease ,respiratory tract diseases ,medicine.anatomical_structure ,Internal medicine ,medicine ,Adenocarcinoma ,business ,Lung cancer - Abstract
Background: Smoking is by far the most important cause of lung cancer. However, lung cancer among never-smokers is common and increasing [1]. A smoking-independent subgroup of lung adenocarcinoma w ...
- Published
- 2018
18. P2.10-01 Analysis of Human Papilloma Viruses (HPV) and Human Polyoma Viruses (HPyV) in Lung Cancer from Swedish Never-Smokers
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Cristian Ortiz-Villalón, Maria Planck, R. Lewensohn, Johan Staaf, L. De Petris, Tina Dalianis, Torbjörn Ramqvist, Eva Brandén, O. Brodin, Christel Reuterswärd, Gunnar Wagenius, Magnus P. Jonsson, and Hirsh Koyi
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Pulmonary and Respiratory Medicine ,Never smokers ,Oncology ,business.industry ,Medicine ,Papilloma ,business ,Lung cancer ,medicine.disease ,Virology - Published
- 2019
19. An Atypical Case of Idiopathic Pulmonary Fibrosis in a Patient from Africa
- Author
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Ida Pesonen, Giovanni Ferrara, and Cristian Ortiz
- Subjects
medicine.medical_specialty ,Case Report ,Lung biopsy ,Gastroenterology ,Pulmonary function testing ,03 medical and health sciences ,FEV1/FVC ratio ,Idiopathic pulmonary fibrosis ,0302 clinical medicine ,Usual interstitial pneumonia ,Internal medicine ,Metaplasia ,medicine ,030212 general & internal medicine ,antifibrotic treatment ,lcsh:R5-920 ,business.industry ,Interstitial lung disease ,peribronchiolar metaplasia ,General Medicine ,respiratory system ,idiopathic pulmonary fibrosis ,medicine.disease ,respiratory tract diseases ,030228 respiratory system ,Histopathology ,medicine.symptom ,lcsh:Medicine (General) ,business - Abstract
A 39 years old African man presented with fatigue, loss of weight and night sweats; radiology showed a possible usual interstitial pneumonia pattern. The patient missed follow-up visits, and presented again after 3 years with productive cough and general illness. Pulmonary function tests showed a decline of FVC compared to a previous investigation. The CT scans showed progression of the interstitial lung disease, and a multidisciplinary conference recommended to proceed with a surgical lung biopsy. Histopathology showed an atypical pattern, with bronchiolar metaplasia. A new multidisciplinary conference made a diagnosis of IPF, and the patient was treated with antifibrotic drugs with a good effect, reaching stability of lung function. This case report highlights the need to improve knowledge and to better characterize rare pulmonary diseases, and especially IPF, among African patients.
- Published
- 2019
20. Proximal Oblique Sliding Closing Wedge Osteotomy for Hallux Valgus
- Author
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Pablo Wagner, Sameer Naranje, Maximiliano Espinosa, Cristian Ortiz, Juan José Valderrama, Emilio Wagner, John S. Gould, Pablo Mococain, and Andres Keller
- Subjects
Adult ,Male ,Metatarsophalangeal Joint ,Reoperation ,Tarsometatarsal joints ,Moderate to severe ,medicine.medical_specialty ,Adolescent ,medicine.medical_treatment ,Metatarsalgia ,Osteotomy ,Severity of Illness Index ,Young Adult ,Postoperative Complications ,Recurrence ,medicine ,Humans ,Orthopedics and Sports Medicine ,Hallux Valgus ,Metatarsal Bones ,Closing wedge ,Aged ,Retrospective Studies ,Valgus deformity ,Aged, 80 and over ,biology ,business.industry ,Oblique case ,Middle Aged ,medicine.disease ,biology.organism_classification ,Hallux Varus ,Surgery ,Radiography ,Valgus ,medicine.anatomical_structure ,Multicenter study ,Patient Satisfaction ,Female ,business ,Bone Plates ,Follow-Up Studies - Abstract
Background: The proximal oblique sliding closing wedge osteotomy (POSCOW) technique was developed to address moderate to severe hallux valgus deformity. We present a retrospective multicenter study to analyze the midterm radiological and clinical outcomes of patients treated with this type of proximal osteotomy fixed with plates. Materials and Methods: One hundred and forty-four patients (187 feet) were operated on between May 2005 and June 2010 in 2 separate centers. Inclusion criteria were symptomatic moderate to severe incongruent hallux valgus deformity, no significant restriction in the first metatarsophalangeal joint movement, none to minimal degenerative changes in the first metatarsophalangeal or the tarsometatarsal joints, and no hypermobility. The median age was 60 years. The preoperative hallux valgus angle (HV) was 35.6 degrees, intermetatarsal angle (IM) was 15.3 degrees, AOFAS score was 53 points. The median follow-up was 35 months (range, 12-73). A POSCOW osteotomy was performed in all patients and fixed with plates. We recorded the satisfaction rate, postoperative clinical and radiological results, and complications. Results: The patient satisfaction rate was 87%. The mean postoperative HV angle was 12.3 degrees, IM angle 4.8 degrees, AOFAS score 89 points. The mean decrease in the first metatarsal length was 2.2 mm (range, 0-8). Twelve feet (6.4%) with recurrence of the deformity required revision surgeries. Removal of complete or partial hardware was needed in 23 feet (12.3%) for symptomatic hardware. Five feet (2.6%) developed hallux varus but only 2 required surgery. Transfer metatarsalgia was noted in 9 feet (4.8%). Conclusions: The POSCOW osteotomy was an effective and reliable method for relieving pain and improving function. A learning curve was present, as most of the complications happened in the initial cases. To our knowledge, this is the largest reported series of proximal closing wedge osteotomy for hallux valgus deformities. Level of Evidence: Level IV, case series.
- Published
- 2013
21. A New Elevating Metatarsal Osteotomy: Geometrical Design and Applications
- Author
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Pablo Wagner, Emilio Wagner, Maximiliano Espinosa, Cristian Ortiz, Andres Keller, Sergio Arellano, and Paulina de la Fuente
- Subjects
Foot Deformities ,Metatarsalgia ,Orthodontics ,Metatarsal osteotomy ,business.industry ,medicine.medical_treatment ,General Medicine ,Phalanx ,medicine.disease ,Osteotomy ,Resection ,medicine ,Humans ,Metatarsal head ,Displacement (orthopedic surgery) ,Metatarsal bones ,business ,Metatarsal Bones - Abstract
For metatarsalgia and lesser toe deformities, a commonly performed procedure is the Weil osteotomy, which inevitably depresses the metatarsal head, changing the intrinsic muscle axis and generating phalanx extension. The objective of this study is to present a new metatarsal osteotomy that shortens or lengthens and elevates the metatarsal head, the elevating metatarsal osteotomy (EMO), with its geometrical analysis and possible applications. A geometrical model was designed, planning an oblique subcapital osteotomy with slice resection and distal displacement. A trigonometric analysis was done to calculate how to shorten, elevate, or lengthen the metatarsal head. The EMO elevates the head in one-third of the width of the resected slice. Distal and dorsal displacement of the metatarsal head results in an elevation and lengthening of the metatarsal bone (60% elevation and 65% lengthening). Performing an elevating metatarsal osteotomy will lengthen and elevate the metatarsal head, which sometimes is necessary when treating toe deformities and instability.
- Published
- 2013
22. State-of-the-Art in Ankle Fracture Management in Chile
- Author
-
Pablo Wagner, Emilio Wagner, and Cristian Ortiz
- Subjects
030222 orthopedics ,medicine.medical_specialty ,business.industry ,Posttraumatic arthritis ,Arthritis ,030229 sport sciences ,medicine.disease ,Ankle Fractures ,03 medical and health sciences ,0302 clinical medicine ,Physical medicine and rehabilitation ,medicine.anatomical_structure ,medicine ,Fracture (geology) ,Injury mechanisms ,Humans ,Orthopedics and Sports Medicine ,Surgery ,Ankle ,Chile ,business - Abstract
The ankle represents the most commonly injured weightbearing joint in the human body. They are typically the result of low-energy, rotational injury mechanisms. However, ankle fractures represent a spectrum of injury patterns from simple to very complex, with varying incidence of posttraumatic arthritis. Stable injury patterns can be treated nonoperatively; unstable injury patterns are typically treated operatively given that they could lead to severe arthritis if not properly addressed.
- Published
- 2016
23. Poliquistosis renal infantil autosómica recesiva con disgenesia biliar. A propósito de un caso
- Author
-
Cristian Ortiz Villalón, María Pilar Díaz Fernández, Consuelo Calabuig Crespo, Vicente Sabater Marco, and Rosa Barbella Aponte
- Subjects
Pathology ,medicine.medical_specialty ,PKD1 ,business.industry ,Genetic disorder ,Autopsy ,Oligohydramnios ,urologic and male genital diseases ,medicine.disease ,female genital diseases and pregnancy complications ,Autosomal Recessive Polycystic Kidney Disease ,Pathology and Forensic Medicine ,Dysgenesis ,Medicine ,Congenital hepatic fibrosis ,business ,Hepatic fibrosis - Abstract
Introduction: Autosomal recessive polycystic kidney disease (ARPKD) is a genetic disorder caused by a mutation in the PKD1 gene, which codes for protein polycystin 1, mapped on chromosome 6p13.3. ARPKD is characterised by the formation of cysts from coalescing dilated renal collecting ducts coexisting with congenital hepatic fibrosis secondary to biliar dysgenesis. Case report: We report the autopsy findings in a 2 h old, term female infant with severe oligohydramnios. The pregnancy had not been monitored, although a previous ultrasonography revealed foetal kidney enlargement. The most significant macroscopic findings were sponge kidneys composed of multiple small cysts and focal hepatic fibrosis. Microscopically a diagnosis of autosomal recessive polycystic kidney disease with biliary dysgenesis was made. Discussion: The clinical and pathological findings are correlated and the most important necropsy findings are described. The relevant literature is reviewed and recent advances in the pathology, genetics, diagnosis, ultrasonography, prevention and treatment of ARPKD are discussed.
- Published
- 2010
24. Recurrent respiratory infections and unusual radiology: a woman with Kartagener's syndrome
- Author
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Giovanni Ferrara, Cristian Ortiz-Villalón, Cecilia Ronnevi, and Jacek Pawlowski
- Subjects
Adult ,medicine.medical_specialty ,Pediatrics ,Bronchi ,Article ,Bronchoscopy ,Recurrence ,Bronchopneumonia ,otorhinolaryngologic diseases ,medicine ,Humans ,Medical history ,Sinusitis ,Respiratory Tract Infections ,Bronchiectasis ,medicine.diagnostic_test ,Respiratory tract infections ,Kartagener Syndrome ,business.industry ,General Medicine ,Situs Inversus ,medicine.disease ,Asthma ,Anti-Bacterial Agents ,Surgery ,Situs inversus ,Female ,Tomography, X-Ray Computed ,business ,Rare disease - Abstract
A 39-year-old woman with known situs inversus and a medical history of asthma had been suffering from recurring bronchial pneumonias and sinusitis for as long as she could remember. After being treated several times with antibiotics due to the frequent respiratory infections and after a CT scan that showed bilateral bronchiectasis, she was referred to the department of respiratory diseases, where another confirming X-ray and a bronchoscopy were performed based on a suspicion of Kartagener's syndrome.
- Published
- 2015
25. Biomechanical evaluation of metatarsal osteotomies for hallux rigidus. A cadaveric testing
- Author
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Ruben Radkievich, Emilio Wagner, Diego Zanolli, Andres Keller, R. Guzman, Cristian Ortiz, Oscar Valencia, and Pablo Wagner
- Subjects
Orthodontics ,lcsh:RD701-811 ,Hallux rigidus ,lcsh:Orthopedic surgery ,business.industry ,medicine ,Orthopedics and Sports Medicine ,musculoskeletal system ,Cadaveric spasm ,medicine.disease ,business - Abstract
Category: Basic Sciences/Biologics, Midfoot/Forefoot Introduction/Purpose: Metatarsal osteotomies for Hallux Rigidus (HR) is a treatment option when neither a cheilectomy nor an arthrodesis are indicated. Different osteotomies exist that elevate, shorten or depress the metatarsal head. No biomechanical information exists that evaluates the effect of osteotomies on hallux range of motion (ROM) and stiffness. Our objective was to evaluate, in a cadaveric model, the first metatarsophalangeal joint (MTPJ) stiffness and kinematics changes, after three different metatarsal osteotomies. Methods: 8 cadaveric foot-ankle–distal tibia specimens were prepared, identifying all extensor and flexor tendons proximally. The skin and subcutaneous tissue was kept intact. Each specimen was mounted on a special frame and luminous markers were attached to the skin (Oxford Foot Model). A dead weight equal to 50% of the stance phase force was applied to each tendon, except for the Achilles tendon and the posterior tibialis. Each specimen served as its own control, testing hallux dorsiflexion when pulling the extensor hallucis longus tendon. 10 cycles were performed for every condition: control (A), and three different metatarsal extraarticular neck osteotomies: vertical osteotomy with 5 mm of depression (B), 5 mm of shortening (C) and 5 mm of shortening and depression (D). All osteotomies were performed on a Hallux Rigidus cadaveric model. We registered the MTPJ stiffness and kinematic changes after each intervention using a tensile testing machine and high definition cameras. Results: B and C were significantly stiffer than group A and D (p0.05). Groups B, C and D achieved similar kinematics (range of motion) to group A (p>0.05). Conclusion: Different metatarsal osteotomies exist for HR. The osteotomy of choice, should be one that recreates the healthy MTPJ motion and stiffness. According to our study, the osteotomy of choice should be one that results in metatarsal head depression and shortening. A possible explanation to our finding, is that a pure shortening or depression osteotomy is really elevating or depressing the head respectively, hence altering the tendon pull and relative head position. Only with metatarsal shortening and depression, the Hallux MTPJ biomechanics in a Hallux Rigidus cadaver model, returns to a healthy state.
- Published
- 2017
26. Development of a cadaveric Hallux Rigidus model. Biomechanical testing
- Author
-
Diego Zanolli, Emilio Wagner, Andres Keller, Cristian Ortiz, R. Radkievic, R. Guzman, Pablo Wagner, and Felipe H. Palma
- Subjects
Orthodontics ,musculoskeletal diseases ,business.industry ,Biomechanics ,medicine.disease ,Biomechanical testing ,musculoskeletal system ,Cadaver model ,lcsh:RD701-811 ,Hallux rigidus ,lcsh:Orthopedic surgery ,medicine ,Orthopedics and Sports Medicine ,Range of motion ,Cadaveric spasm ,business - Abstract
Category: Bunion Introduction/Purpose: Hallux Rigidus (HR) is characterized initially by a decrease in Hallux metatarsophalangeal joint (MTPJ) dorsiflexion, decreasing the total range of motion. To be able to study different surgical treatment options, a cadaveric model has to be developed that recreates the limited range of motion. Our objective was to develop an Hallux Rigidus cadaveric model by shortening the plantar fascia (PF). Hallux MTPJ range of motion and joint stiffness were evaluated. Methods: 8 cadaveric foot- ankle – distal tibia specimens were prepared, identifying all extensor and flexor tendons proximally. The skin and subcutaneous tissue was kept intact. Each specimen was mounted on a special frame and luminous markers were attached to the skin (Oxford Foot Model). A dead weight equal to 50% of the stance phase force was applied to each tendon, except for the Achilles tendon and the posterior tibialis. 10 Hallux MTPJ dorsiflexion-plantarflexion cycles were performed by pulling the Extensor Hallucis longus tendon using an tensile testing machine (Kinetecnics). A Hallux Rigidus model was then developed by shortening the PF by 6 mm using a triple fiberwire suture technique. The same 10 cycles were repeated with a shortened PF. Each specimen served as its own control. Hallux metatarsophalangeal stiffness and kinematics were tested using a tensile testing machine and high definition cameras. Results: The group with a shortened PF significantly reduced the hallux dorsiflexion (18.6 degrees) compared to the native foot (23.7 degress) (p0.05). Conclusion: To create a HR model is vital to allow further understanding of the pathology. The cadaveric model should not alter the joint stability (intact periarticular soft tissues) but has to limit Hallux range of motion. The model we present successfully recreates HR by limiting MTPJ dorsiflexion. The absence of stiffness change shows that joint congruity and isometry were not modified. There are a few reports that state a PF shortening as the first stage in HR. This would lead to a hinge-like MTPJ dorsiflexion, creating a dorsal metatarsal head impingement that could evolve to a dorsal exostosis.
- Published
- 2017
27. PUB115 Clinical Significance of PD-L1 Status and the Expression of PD-1 in Tumor-Infiltrating Lymphocytes (TILs) in Lung Cancer
- Author
-
Lorand Kis, Cristian Ortiz-Villalón, Georgios Z. Rassidakis, Rolf Lewensohn, Georgios Karagkounis, Luigi De Petris, and Salomon Tendler
- Subjects
Pulmonary and Respiratory Medicine ,Oncology ,medicine.medical_specialty ,biology ,Tumor-infiltrating lymphocytes ,business.industry ,medicine.disease ,PD-L1 ,Internal medicine ,Cancer research ,medicine ,biology.protein ,Clinical significance ,business ,Lung cancer - Published
- 2017
28. Early weight-bearing after percutaneous reduction and screw fixation for low-energy lisfranc injury
- Author
-
Ignacio Villalon, Emilio Wagner, Pablo Wagner, Andres Keller, and Cristian Ortiz
- Subjects
Adult ,Male ,medicine.medical_specialty ,Percutaneous ,Time Factors ,Adolescent ,Intra-Articular Fractures ,medicine.medical_treatment ,Bone Screws ,Joint Dislocations ,medicine.disease_cause ,Tarsal Joints ,Weight-bearing ,Weight-Bearing ,Fracture Fixation, Internal ,Young Adult ,Low energy ,medicine ,Humans ,Orthopedics and Sports Medicine ,Early weight bearing ,Reduction (orthopedic surgery) ,Metatarsal Bones ,Fracture Healing ,Lisfranc injury ,Rehabilitation ,business.industry ,Recovery of Function ,Middle Aged ,medicine.disease ,Surgery ,Radiography ,Treatment Outcome ,Female ,Metatarsal bones ,business - Abstract
Background:Anatomic restoration and postoperative rehabilitation of displaced fracture-dislocations of the tarsometatarsal junction of the foot are essential. Our objective was to report percutaneous reduction and screw fixation results in low-energy Lisfranc fracture dislocation injuries that were treated with early weight-bearing and rehabilitation.Methods:We retrospectively evaluated patients with low-energy Lisfranc injuries who underwent surgery between May 2007 and April 2011. The study reviewed 22 patients (12 men and 10 women) with an average age of 36.2 years (range, 16-50 years) and an average follow-up of 33.2 months (range, 12-50 months). We report the mechanism of trauma; quality of reduction in the postoperative digital radiographs; subjective satisfaction; AOFAS score; time required to return to work, recreational activities, and low-impact sports; and complications. Postoperatively, all of the patients were instructed to be non-weight-bearing for 3 weeks, and the stitches were removed after 2 weeks. At the third postoperative week, the patients were encouraged to bear weight as tolerated.Results:Quality of reduction was anatomic or near anatomic in 100% of cases. The subjective satisfaction reported by patients was very good, with complete satisfaction in 20 of them (90.9%). The AOFAS average was 94 points (range, 90-100 points). Average return to work was at 7 weeks (range, 6-9 weeks), recreational activities 7.2 weeks (range, 6-9 weeks), training for low-impact sports 7.6 weeks (range, 7-8 weeks), and symptom-free sport activities 12.4 weeks (range, 11-13 weeks).Conclusion:In this selected group of patients with low-energy Lisfranc fracture dislocation, anatomic or near-anatomic reduction can be achieved with percutaneous reduction and screw fixation. Early weight-bearing is possible in these patients, and early return to regular activities and low-impact sport can be expected.Level of Evidence:Level IV, retrospective case series.
- Published
- 2013
29. Bunions (Hallux Valgus)
- Author
-
Emilio Wagner, Cristian Ortiz, and Pablo Wagner
- Subjects
Orthodontics ,Valgus ,biology ,business.industry ,Medicine ,biology.organism_classification ,business ,medicine.disease ,Bunions - Published
- 2013
30. Clinical significance of the tumor expression of PD-L1 in lung cancer
- Author
-
Rolf Lewensohn, Luigi De Petris, Lorand Kis, Cristian Ortiz-Villalón, Salomon Tendler, and Signe Friesland
- Subjects
Oncology ,Cancer Research ,medicine.medical_specialty ,biology ,business.industry ,medicine.disease ,Internal medicine ,PD-L1 ,medicine ,biology.protein ,Immunohistochemistry ,Clinical significance ,Lung cancer ,business ,Predictive biomarker - Abstract
e20031Background: PD-L1 status in lung cancer may be a predictive biomarker for the use of PD1/PD-L1 inhibitors. Nonetheless, it is still a matter of debate which immunohistochemistry (IHC) platfor...
- Published
- 2016
31. The painful neuroma and the use of conduits
- Author
-
Emilio Wagner and Cristian Ortiz
- Subjects
Reconstructive surgery ,medicine.medical_specialty ,Pain ,Metatarsalgia ,Resection ,Foot Diseases ,Neuroma ,otorhinolaryngologic diseases ,medicine ,Humans ,Orthopedics and Sports Medicine ,Process (anatomy) ,Nerve Transfer ,business.industry ,Foot ,Suture Techniques ,Peroneal Nerve ,Hand surgery ,Plastic Surgery Procedures ,Toes ,medicine.disease ,Surgery ,Calcaneus ,medicine.anatomical_structure ,Critical function ,sense organs ,Ankle ,business ,Algorithms - Abstract
Treatment of neuromas in the foot and ankle is evolving. A paucity of studies deals with neuromas in this region; most knowledge comes from hand surgery. A trend toward reconstructive surgery using nerve grafts and conduits for nerves with critical function is being seen. For noncritical nerves, generally accepted treatment is neuroma resection and burial into a tissue bed. A clear knowledge of neural anatomy is paramount, together with correct identification of all the nerves involved in the pain-generation process. More studies dealing with neuromas in this area are needed for evidence-based information.
- Published
- 2011
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