7 results on '"Ronnie Ptasznik"'
Search Results
2. Vascularity and pain in the patellar tendon of adult jumping athletes: a 5 month longitudinal study * Commentary
- Author
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Peter Malliaras, Ronnie Ptasznik, Jill Cook, Meg E. Morris, and J. De Luca
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medicine.medical_specialty ,Longitudinal study ,biology ,Athletes ,business.industry ,Ultrasound ,Physical Therapy, Sports Therapy and Rehabilitation ,General Medicine ,Blood flow ,medicine.disease_cause ,biology.organism_classification ,Surgery ,Tendon ,Jumping ,medicine.anatomical_structure ,Vascularity ,medicine ,Orthopedics and Sports Medicine ,Patella ,medicine.symptom ,business - Abstract
Background: This study investigated changes in tendon vascularity in 102 (67 men and 35 women) volleyball players over a 6 month competitive season. Methods: Athletes were examined with both grey scale ultrasound and standardised colour Doppler settings. Vessel length and pain were measured each month on five separate occasions. Vascular tendons were divided into (i) those that were vascular on all occasions (persistent vascularity) and (ii) those that were vascular on more than two but less than five occasions (intermittent vascularity). Results: A total of 41 of the 133 abnormal tendons were vascular on two or more occasions. Of these, 16 had persistent vascularity and 25 had intermittent vascularity. There was no significant difference in the prevalence of vascularity between men and women. None of the tendons had a pattern of vascularity over the season that could be clearly interpreted as the onset or resolution of vascularity. Subjects with changes in both tendons were more likely to have persistent vascularity (p = 0.045). Vessels were longer in tendons with persistent vascularity (p
- Published
- 2005
3. Ultrasound assessment of large joint amyloidosis in haemodialysis
- Author
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Ronnie Ptasznik, Marc Lanteri, Oliver Hennesy, Leonie Constable, and John Kenneth Dawborn
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musculoskeletal diseases ,medicine.medical_specialty ,business.industry ,Amyloidosis ,Echogenicity ,General Medicine ,medicine.disease ,Biceps ,Asymptomatic ,Tendon ,Surgery ,medicine.anatomical_structure ,Nephrology ,Knee effusion ,medicine ,Rotator cuff ,Shoulder joint ,Radiology ,medicine.symptom ,business - Abstract
SUMMARY: Dialysis-related amyloidosis (DRA), associated with beta-2 microglobulin deposition, is a common cause of morbidity in patients with renal failure undergoing chronic dialysis. The non-invasive diagnosis of DRA in its early stages is difficult. High resolution ultrasound (US) was used to examine the shoulder, hip and knee joints of 25 chronic haemodialysis patients, and features distinctive of DRA were determined. Distinctive US features were associated with increased total duration of dialysis (15 ± 5 vs 4 ± 2 years), carpal tunnel syndrome (9/10 cases) and shoulder joint discomfort (19 vs three joints). These features include altered rotator cuff echogenicity (hyperechoic and hypoechoic areas; 20/48 joints), hypoechoic material in the biceps sheath (16/48), erosions of bone (15/48) and reduced biceps tendon fibril echogenicity (12/48). These changes are unique in the experience of the current authors, but histological proof that they are definitely the result of DRA has not yet been possible. Tears of the rotator cuff tendons (14/50) were not consistently associated with symptoms (7/14). Tendon thickness was also increased (as has been described previously). The hip capsule thickness was increased in patients with signs of DRA in the shoulder, but no specific changes in texture were seen. Asymptomatic knee joint effusions were present in 40/50 joints (80%). These features detectable on high resolution US allow the non-invasive early detection of DRA and are useful in the diagnosis and management of this condition.
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- 2000
4. Achieving adequate margins in ameloblastoma resection: the role for intra-operative specimen imaging. Clinical report and systematic review
- Author
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Anand Ramakrishnan, Charles Baillieu, Ionka De Silva, Mansoor Mirkazemi, Warren M. Rozen, Ronnie Ptasznik, and James Leong
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medicine.medical_specialty ,Intra operative ,Histology ,Systematic Reviews ,Clinical Research Design ,Science ,Oral Medicine ,Resection ,Diagnostic Radiology ,Ameloblastoma ,Excision margins ,Intraoperative Period ,Young Adult ,Surgical Clearance ,Clinical report ,Computed Tomography ,Oral Diseases ,Diagnostic Medicine ,medicine ,Frozen Sections ,Humans ,Biology ,Multidisciplinary ,business.industry ,Histocytochemistry ,medicine.disease ,Reconstructive Surgery ,Jaw Neoplasms ,Surgery ,Systematic review ,Surgical Oncology ,Surgery, Computer-Assisted ,Head and Neck Surgery ,Odontogenic neoplasm ,Medicine ,Female ,Neoplasm Recurrence, Local ,business ,Tomography, X-Ray Computed ,Radiology ,Research Article ,Test Evaluation - Abstract
BackgroundAmeloblastoma is a locally aggressive odontogenic neoplasm. With local recurrence rates reaching 90%, only completeness of excision can facilitate cure. Surgical clearance has widely been based on pre-operative imaging to guide operative excision margins, however use of intra-operative specimen x-ray or frozen-section has been sought to improve clearance rates, and advanced imaging technologies in this role have been proposed. This manuscript aims to quantify the evidence for evaluating intra-operative resection margins and present the current standard in this role.MethodThe current study comprises the first reported comparison of imaging modalities for assessing ameloblastoma margins. A case is presented in which margins are assessed with each of clinical assessment based on preoperative imaging, intra-operative specimen x-ray, intra-operative specimen computed tomography (CT) and definitive histology. Each modality is compared quantitatively. These results are compared to the literature through means of systematic review of current evidence.ResultsA comparative study highlights the role for CT imaging over plain radiography. With no other comparative studies and a paucity of high level evidence establishing a role for intra-operative margin assessment in ameloblastoma in the literature, only level 4 evidence supporting the use of frozen section and specimen x-ray, and only one level 4 study assesses intra-operative CT.ConclusionThe current study suggests that intra-operative specimen CT offers an improvement over existing techniques in this role. While establishing a gold-standard will require higher level comparative studies, the use of intra-operative CT can facilitate accurate single-stage resection.
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- 2012
5. Prospective study of change in patellar tendon abnormality on imaging and pain over a volleyball season
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Shane Thomas, Jill Cook, Ronnie Ptasznik, and Peter Malliaras
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musculoskeletal diseases ,Adult ,Male ,medicine.medical_specialty ,Pain ,Physical Therapy, Sports Therapy and Rehabilitation ,Squat ,Tendon Injuries ,medicine ,Humans ,Orthopedics and Sports Medicine ,Prospective Studies ,Prospective cohort study ,Pain Measurement ,Ultrasonography ,business.industry ,General Medicine ,Patella ,musculoskeletal system ,Patellar tendon ,Surgery ,Tendon ,medicine.anatomical_structure ,Athletic Injuries ,Ultrasound imaging ,Female ,Original Article ,Abnormality ,business ,Sports - Abstract
Objective: Patellar tendon injury, defined by tendon abnormality (TA) on imaging and by pain, is common among volleyball players, but little is known about change in this injury over a volleyball season. Increased activity in the season compared with the off season may result in the development of TA and/or pain. This study investigated the behaviour of TA and pain over a competitive volleyball season. Methods: Tendon abnormality and pain were measured in 101 volleyball players at the beginning and end of a season. Pain was measured with the single leg decline squat test, which loads the patellar tendon, and TA was detected with ultrasound imaging. Hours of weekly activity were measured and compared during the season and the off season. The proportion of tendons that underwent development and resolution in TA and/or pain over the season was investigated. Results: Hours of weekly activity was greater during the season than in the off season. Most of the tendons investigated (66.3%) did not undergo a change in TA or pain over the season. Tendon abnormality and/or pain developed in 16.6% of tendons and resolved in 11.2%. Conclusions: The tendons of volleyball players respond variably to the increased load over the season. Change in TA and pain does not appear to be entirely dependent upon load.
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- 2006
6. Shock-Wave Therapy for Plantar Fasciitis
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Andrew Forbes, Rachelle Buchbinder, and Ronnie Ptasznik
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medicine.medical_specialty ,business.industry ,Significant difference ,Plantar fasciitis ,General Medicine ,medicine.disease ,Shock wave therapy ,Sample size determination ,Test comparison ,medicine ,Physical therapy ,Orthopedics and Sports Medicine ,Surgery ,Active treatment ,medicine.symptom ,Fasciitis ,business - Abstract
To The Editor: Dr. Ogden and colleagues recently reported the results of a trial of shock-wave treatment for chronic plantar fasciitis in “Electrohydraulic High-Energy Shock-Wave Treatment for Chronic Plantar Fasciitis” (2004;86:2216-28). We seek clarification about whether this is a reanalysis of a previously published trial1, and, if so, why the sample sizes are substantially different. While the results appear similar, the authors now claim a significant difference in the mean score for the subjective self-assessment of pain at twelve weeks favoring the active treatment group (p = 0.014). While this cannot be verified from the data presented, as no measures of variance are provided, independent t test comparison of mean scores for subjective self-assessment of pain at twelve …
- Published
- 2005
7. Shock Wave Therapy for Treatment of Plantar Fasciitis—Reply
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Ronnie Ptasznik, Rachelle Buchbinder, and Andrew Forbes
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medicine.medical_specialty ,Shock wave therapy ,business.industry ,medicine ,Plantar fasciitis ,General Medicine ,medicine.symptom ,business ,Surgery - Published
- 2003
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