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Santiago A Lozanocalderon - One of the best experts on this subject based on the ideXlab platform.
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outcome after reconstruction of the proximal Humerus for tumor resection a systematic review
Clinical Orthopaedics and Related Research, 2014Co-Authors: Teun Teunis, Sjoerd P F T Nota, Francis J Hornicek, Joseph H Schwab, Santiago A LozanocalderonAbstract:Background Tumors of the appendicular skeleton commonly affect the proximal Humerus, but there is no consensus regarding the best reconstructive technique after proximal Humerus resection for tumors of the shoulder.
Arne Streitbürger - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of a reconstruction reverse shoulder for tumour surgery and tribological comparision with an anatomical shoulder arthroplasty
International Orthopaedics, 2013Co-Authors: Ralf Dieckmann, Dennis Liem, Georg Gosheger, Marcel-philipp Henrichs, Steffen Höll, Jendrik Hardes, Arne StreitbürgerAbstract:Purpose The functional results after reconstruction of the proximal Humerus in tumour surgery are poor. Therefore, a reversed proximal Humerus replacement was developed in our institution (MUTARS Humerus inverse). A low degree of wear on the polyethylene is required because of the patients’ youth and demands on shoulder function. A special type of polyethylene with shock-absorbing properties has been developed to minimise polyethylene wear in the MUTARS inverse proximal Humerus replacement. We compared the tribological properties of an anatomical shoulder prosthesis (CAPICA) with the new reversed proximal Humerus replacement (MUTARS Humerus inverse). Methods Both prostheses were tested up to 5 × 10^6 cycles. Every millionth cycle the surface was inspected and a gravimetric measurement was performed. A measurement of surface roughness was done before testing and after 5 × 10^6 cycles. Results In both prostheses after 5 × 10^6 cycles there were no major defects, such as delamination, observed. In the reversed proximal Humerus replacement abrasion of 28 mg/10^6 cycles was detected. The mean abrasion of the anatomical prosthesis was 9.28 mg/ 10^6 cycles. Conclusion The glenoid component of the first reversed Humerus replacement (MUTARS Humerus inverse) has wear properties comparable to those of normal reversed shoulder prostheses. This is important, as this type of prosthesis is used in young patients after resection of bone tumours, with a good functional outcome. It can, therefore, be expected that the revision rate due to wear will be as high as in patients with normal reversed shoulder prostheses.
Emilie V Cheung - One of the best experts on this subject based on the ideXlab platform.
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treatment of periprosthetic Humerus fractures associated with shoulder arthroplasty
Journal of The American Academy of Orthopaedic Surgeons, 2008Co-Authors: Scott P Steinmann, Emilie V CheungAbstract:AbstractThe incidence of periprosthetic Humerus fracture associated with shoulder arthroplasty is approximately 0.6% to 3%. Fractures of the Humerus occur most often intraoperatively and are more common during total shoulder arthroplasty than hemiarthroplasty because of difficulties in gaining acces
Teun Teunis - One of the best experts on this subject based on the ideXlab platform.
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outcome after reconstruction of the proximal Humerus for tumor resection a systematic review
Clinical Orthopaedics and Related Research, 2014Co-Authors: Teun Teunis, Sjoerd P F T Nota, Francis J Hornicek, Joseph H Schwab, Santiago A LozanocalderonAbstract:Background Tumors of the appendicular skeleton commonly affect the proximal Humerus, but there is no consensus regarding the best reconstructive technique after proximal Humerus resection for tumors of the shoulder.
Brian T Feeley - One of the best experts on this subject based on the ideXlab platform.
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a systematic review of locking plate fixation of proximal Humerus fractures
Injury-international Journal of The Care of The Injured, 2011Co-Authors: Robert C Sproul, Jaicharan J Iyengar, Zlatko Devcic, Brian T FeeleyAbstract:Purpose: Technique for the fixation of two, three, and four part proximal Humerus fractures has rapidly shifted towards the use of specially contoured proximal Humerus locking plates. The purpose of this study is to evaluate the short to medium term functional results and common complications associated with the fixation of proximal Humerus fractures with locking plates. Methods: The PubMed and EMBASE databases were used to perform a systematic review of the English literature to assess the functional results and complications associated with proximal Humerus locking plates. Our inclusion criteria were proximal Humerus fracture due to trauma (excluding pathologic fractures), patients greater than 18 years of age, more than 15 patients in the study or subgroup of interest, at least 18 months follow-up, at least one relevant functional outcome score, and quality outcome score of at least 5/10. Studies that did not meet these criteria were excluded. All institutional, author, and journal information was concealed to minimize reviewer bias. Results: Twelve studies including 514 patients met the inclusion criteria. At most recent follow-up patients achieved a mean Constant score of 74 and a mean DASH score of 27. The overall rate of complications was 49% including varus malunion, 33% excluding varus malunion, and reoperation rate was 14%. The most common complications included varus malunion 16%, AVN 10%, screw perforation of the humeral head into the joint 8%, subacromial impingement 6%, and infection 4%. Discussion: Fixation of proximal Humerus fractures with proximal Humerus locking plates is associated with a high rate of complications and reoperation. Further study is needed to determine what technical errors and patient characteristics are risk factors for failure of this now common fixation technique.