11 results on '"K.J. Ponsen"'
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2. Radiographic Loss of Contact Between Radial Head Fracture Fragments Is Moderately Reliable
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Daniel Hernandez, David R. Miller, Vispi Jokhi, Matthias Turina, J. C. Goslings, Parag Sancheti, J. L. Marsh, Parag Melvanki, Fred Baumgaertel, Charalampos G. Zalavras, Doug Hanel, Scott Edwards, Marc F. Swiontkowski, Jonathan Rosenfeld, Jason Fanuele, Brent Bamberger, Jeffrey Wint, Lisa L. Lattanza, Michael P. Leslie, Saul Kaplan, Matt Mormino, Loren Potter, Ronald Liem, Eric P. Hofmeister, Francisco Javier Aguilar Sierra, Jeremy A. Hall, Mahmoud I. Abdel-Ghany, Jonathan L. Hobby, Sanjev Jain, Taizoon Baxamusa, Martin I. Boyer, Reto Babst, Nikolaos K. Kanakaris, Gregory L. DeSilva, Ramon De Bedout, Ladislav Mica, Thomas B. Hughes, M. Jason Palmer, John S. Taras, Thomas A. DeCoster, Daphne M. Beingessner, Sanjeev Kakar, Lob Guenter, Arie B. van Vugt, Douglas T. Hutchinson, Hans J. Kreder, R. S. Gulve, J. Andrew, Henry Broekhuyse, Milind Merchant, Elena Grosso, David O. Oloruntoba, Nick Meyer, Iain McGraw, Michael Nancollas, Gustavo Mantovani Ruggiero, Rolf W. Peters, Antonio Barquet, Christopher J. Walsh, Thomas W. Wright, Pradeep Choudhari, Peter J. L. Jebson, Grant E. Garrigues, Richard Barth, Sander Spruijt, Scott F. M. Duncan, Taco Gosens, Thierry G. Guitton, Takashi Sasaki, Philipp Lenzlinger, Edward J. Harvey, Richard Buckley, Qiugen Wang, Platz Andreas, K.J. Ponsen, John Glenden DeVine, Peter Kloen, David Ring, Wendy E. Bruinsma, Jose A. Ortiz, Rodrigo Pesantez, Lawrence Weiss, Michael A. Prayson, Denise Eygendaal, Alberto Pérez Castillo, Edward C. Yang, Ross Leighton, John A. McAuliffe, Frede Frihagen, Amal Basak, Clifford B. Jones, Boyd Lumsden, Edward K. Rodriguez, Brett D. Crist, Martin Richardson, James F. Kellam, Kendrick E. Lee, W. Arnnold Batson, Shep Hurwit, Michael W. Grafe, Todd E. Siff, David Weiss, George L. Thomas, Scott A. Mitchell, Steve Helgemo, Ben Sutker, Joseph M. Conflitti, James Wagg, Toni M. McLaurin, Michael H.J. Verhofstad, Richard L. Uhl, Robert D. Zura, Eric Mark Hammerberg, John Wixted, Jorge G. Boretto, Frank L. Walter, Ian A. Harris, Waldo E. Floyd, Michael A. Baskies, John Howlett, I. Trenholm, Peter L. Althausen, Rozental, Brad Petrisor, John T. Bolger, Raymond Malcolm Smith, Rena Stewart, Leon Elmans, David B. Carmack, Ekkehard Bonatz, David M. Kalainov, George M. Kontakis, Rick F. Papandrea, Andrew H. Schmidt, Julie E. Adams, I. J.V. Kleinlugtenbelt, Gregory J. Della Rocca, Charles Cassidy, Catherine Spath, Lars C. Borris, Fabio Suarez, Chris Wilson, Jim Calandruccio, Sidney M. Jacoby, Thomas J. Fischer, Daniel B. Polatsch, Peter Schandelmaier, Jose Nolla, Richard S. Page, Kenneth A. Egol, Steven J. Rhemrev, Alan Kawaguchi, Timothy G. Havenhill, Jay Pomerance, Patrick T. McCulloch, Richard Jenkinson, Fryda Medina Rodríguez, Bernhard Ciritsis, Abhijeet L. Wahegaonkar, Charles Metzger, Vishwanath M. Iyer, Carrie R. Swigart, Lisa Taitsman, Leon S. Benson, Rudolf W. Poolman, Kyle J. Jeray, Peter R. Brink, Niels W. L. Schep, Marc J. Richard, Kevin Eng, Russell Shatford, George S.M. Dyer, Orthopedic Surgery and Sports Medicine, Surgery, Other Research, Other departments, AMS - Amsterdam Movement Sciences, and Graduate School
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Joint Instability ,Male ,medicine.medical_specialty ,Sports medicine ,Radiography ,Elbow ,Forearm ,Predictive Value of Tests ,Elbow Joint ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Observer Variation ,Orthodontics ,business.industry ,Reproducibility of Results ,General Medicine ,Anatomy ,Prognosis ,musculoskeletal system ,body regions ,Radius ,medicine.anatomical_structure ,Symposium: Traumatic Elbow Instability and its Sequelae ,Elbow dislocation ,Orthopedic surgery ,Ligament ,Female ,Surgery ,Radial head fracture ,Clinical Competence ,Radius Fractures ,Elbow Injuries ,business ,Specialization - Abstract
Loss of contact between radial head fracture fragments is strongly associated with other elbow or forearm injuries. If this finding has adequate interobserver reliability, it could help examiners identify and treat associated ligament injuries and fractures (eg, forearm interosseous ligament injury or elbow dislocation). (1) What is the interobserver agreement on radiographic loss of contact between radial head fracture fragments? (2) Are there factors associated with the observer such as location of practice or subspecialization that increase interobserver reliability? Fully trained practicing orthopaedic and trauma surgeons from around the world evaluated 27 anteroposterior and lateral radiographs of radial head fractures on a web-based platform for the following characteristics: (1) loss of contact between at least one radial head fracture fragment and the remaining radial head and neck; (2) a gap between fragments of 2 mm or greater; (3) anticipated fracture instability (mobility) on operative exposure; (4) anticipated associated ligament injuries; and (5) recommendation for treatment. Agreement among observers was measured using the multirater kappa measure. Kappas for various observer characteristics were compared using 95% confidence intervals. The overall interobserver agreement was moderate (range, 0.49-0.55) for each question except associated ligament injury, which was fair (0.33). Shoulder and elbow surgeons had substantial agreement (range, 0.51-0.61) in many areas, but kappas were generally in the moderate range (0.41-0.59) based on number of years in practice, radial head fractures treated per year, and trainee supervision. Radiographic signs of radial head fracture instability such as loss of contact have moderate reliability. This characteristic seems clinically useful, because loss of contact between at least one radial head fracture fragment and the remaining radial head and neck is strongly associated with associated ligament injury or other fractures. Level III, diagnostic study. See Guidelines for Authors for a complete description of levels of evidence
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- 2014
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3. Traumateamervaringen bij noodhulp na de aardbevingsramp in Haïti 2010
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K.J. Ponsen and V.M. de Jong
- Abstract
Dit artikel beschrijft de gang van zaken van het geven van noodhulp door TraumaNet AMC na de Haiti-aardbeving van 2010. Aan de hand van casuistiek wordt inzicht gegeven in de lokale omstandigheden waaronder problemen waarmee gewerkt moest worden. Tevens wordt uitgebreid ingegaan op het protocolleren van noodhulp, zodat toekomstige noodhulp geoptimaliseerd wordt.
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- 2012
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4. Both-Column Acetabular Fractures: Does Surgical Approach Vary Based on Using Virtual 3D Reconstructions?
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Leemhuis, Judith F., Assink, Nick, Reininga, Inge H. F., de Vries, Jean-Paul P. M., ten Duis, Kaj, Meesters, Anne M. L., and IJpma, Frank F. A.
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HIP fractures ,ACETABULUM surgery ,TRAUMA centers ,DECISION making ,SURGEONS - Abstract
Displacement of the anterior and posterior column complicates decision making for both-column acetabular fractures. We questioned whether pelvic surgeons agree on treatment strategy, and whether the use of virtual 3D reconstructions changes the treatment strategy of choice. A nationwide cross-sectional survey was performed in all pelvic trauma centers in the Netherlands. Twenty surgeons assessed 15 both-column fractures in 2D as well as 3D. Based on conventional imaging, surgical treatment was recommended in 89% of cases, and by adding 3D reconstructions this was 93% (p = 0.09). Surgical approach was recommended as anterior (65%), posterior (8%) or combined (27%) (poor level of agreement, κ = 0.05) based on conventional imaging. The approach changed in 37% (p = 0.006), with most changes between a combined and anterior approach (still poor level of agreement, κ = 0.13) by adding 3D reconstructions. Additionally, surgeons' level of confidence increased from good in 38% to good in 50% of cases. In conclusion, surgeons do not agree on the treatment strategy for both-column acetabular fractures. Additional information given by 3D reconstructions may change the chosen surgical approach and increase surgeons' confidence about their treatment decision. Therefore, virtual 3D reconstructions are helpful for assessing both-column fracture patterns and aid in the choice of treatment strategy. [ABSTRACT FROM AUTHOR]
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- 2023
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5. Optimization of a Patient Distribution Framework: Second Wave COVID-19 Preparedness and Challenges in the Amsterdam Region.
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Berkeveld, Eva, Mikdad, Sarah, Terra, Maartje, Kramer, Mark H. H., Bloemers, Frank W., Zandbergen, H. Reinier, van den Brink, A., van der Does de Willebois, E., van Embden, D., Furumaya, A., de Haan, M., de Buij Wenniger, L. Mailette, Nooijen, L., Penning, D., Zinger, I., van den Berg, M.H., Bonink, D., Dokter, J., Fresen, T., and Homma, P.
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COVID-19 pandemic ,TASK forces ,COVID-19 ,SITUATIONAL awareness ,PREPAREDNESS ,SAFETY-net health care providers - Abstract
To meet surge capacity and to prevent hospitals from being overwhelmed with COVID-19 patients, a regional crisis task force was established during the first pandemic wave to coordinate the even distribution of COVID-19 patients in the Amsterdam region. Based on a preexisting regional management framework for acute care, this task force was led by physicians experienced in managing mass casualty incidents. A collaborative framework consisting of the regional task force, the national task force, and the region's hospital crisis coordinators facilitated intraregional and interregional patient transfers. After hospital admission rates declined following the first COVID-19 wave, a window of opportunity enabled the task forces to create, standardize, and optimize their patient transfer processes before a potential second wave commenced. Improvement was prioritized according to 3 crucial pillars: process standardization, implementation of new strategies, and continuous evaluation of the decision tree. Implementing the novel "fair share" model as a straightforward patient distribution directive supported the regional task force's decisionmaking. Standardization of the digital patient transfer registration process contributed to a uniform, structured system in which every patient transfer was verifiable on intraregional and interregional levels. Furthermore, the regional task force team was optimized and evaluation meetings were standardized. Lines of communication were enhanced, resulting in increased situational awareness among all stakeholders that indirectly provided a safety net and an improved integral framework for managing COVID-19 care capacities. In this article, we describe enhancements to a patient transfer framework that can serve as an exemplary system to meet surge capacity demands during current and future pandemics. [ABSTRACT FROM AUTHOR]
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- 2023
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6. Cost-effectiveness of trauma CT in the trauma room versus the radiology department: the REACT trial.
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Saltzherr TP, Goslings JC, Bakker FC, Beenen LF, Olff M, Meijssen K, Asselman FF, Reitsma JB, Dijkgraaf MG, REACT study group, Saltzherr, T P, Goslings, J C, Bakker, F C, Beenen, L F M, Olff, M, Meijssen, K, Asselman, F F, Reitsma, J B, and Dijkgraaf, M G W
- Abstract
Objective: To determine the cost-effectiveness of trauma room CT compared with CT performed at the radiology department.Methods: In this randomised controlled trial, adult patients requiring evaluation in a level 1 trauma centre were included. In the intervention hospital the CT system was located within the trauma room and in the control hospital within the radiology department. Direct and indirect medical costs of the institutionalised stay and diagnostic and therapeutic procedures were calculated.Results: A total of 1,124 patients were randomised with comparable demographic characteristics. Mean number of non-institutionalised days alive was 322.5 in the intervention group (95 % CI 314-331) and 320.7 in the control group (95 % CI 312.1-329.2). Mean costs of diagnostic and therapeutic procedures per hospital inpatient day were554 for the intervention group and 468 for the control group. Total mean costs in the intervention group were 16,002 (95 % CI 13,075-18,929) and 16,635 (95 % CI 13,528-19,743) for the control group (P = 0.77). Conclusion: The present study showed that in trauma patients the setting with a CT system located in the trauma room did not provide any advantages or disadvantages from a health economics perspective over a CT system located in the radiology department. [ABSTRACT FROM AUTHOR]- Published
- 2013
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7. Traumateamervaringen bij noodhulp na de aardbevingsramp in Haïti 2010.
- Author
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Jong, V.M. and Ponsen, K.J.
- Abstract
Copyright of Nederlands Tijdschrift Voor Traumatologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2012
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8. How to evaluate the quality of fracture reduction and fixation of the wrist and ankle in clinical practice: a Delphi consensus.
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Beerekamp, M. S., Haverlag, R., Ubbink, D. T., Luitse, J. S., Ponsen, K. J., and Goslings, J. C.
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INTERNAL fixation in fractures ,WRIST injuries ,ANKLE injury diagnosis ,RADIOGRAPHY ,TOMOGRAPHY ,TIBIAL arteries ,DIAGNOSIS - Abstract
Method: A Delphi study was conducted to obtain consensus on the most important criteria for the radiological evaluation of the reduction and fixation of the wrist and ankle. The Delphi study consisted of a bipartite online questionnaire, focusing on the interpretation of radiographs and CT scans of the wrist and the ankle. Questions addressed imaging techniques, aspects of the anatomy and fracture reduction and fixation. Agreement was expressed as the percentage of respondents with similar answers. Consensus was defined as an agreement of at least 90%. Results: In three Delphi rounds, respectively, 64, 74 and 62 specialists, consisting of radiologists, trauma and orthopaedic surgeons from the Netherlands responded. After three Delphi rounds, consensus was reached for three out of 14 (21%) imaging techniques proposed, 11 out of the 13 (85%) anatomical aspects and 13 of the 22 (59%) items for the fracture reduction and fixation. This Delphi consensus differs from existing scoring protocols in terms of the greater number of anatomical aspects and aspects of fracture fixation requiring evaluation and is more suitable in clinical practice due to a lower emphasis on measurements. [ABSTRACT FROM AUTHOR]
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- 2011
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9. Predictors for the selection of patients for abdominal CT after blunt trauma: a proposal for a diagnostic algorithm.
- Abstract
Copyright of Nederlands Tijdschrift Voor Traumatologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2010
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10. Cancellations of (helicopter transported) - Mobile Medical Team dispatches in the Netherlands.
- Abstract
Copyright of Nederlands Tijdschrift Voor Traumatologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2010
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11. Dutch trauma publications abroad.
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- 2010
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