The Journal of bone and joint surgery. American volume
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J Bone Joint Surg Am · May 2007
Commercially funded and United States-based research is more likely to be published; good-quality studies with negative outcomes are not.
Prior studies implying associations between receipt of commercial funding and positive (significant and/or pro-industry) research outcomes have analyzed only published papers, which is an insufficiently robust approach for assessing publication bias. In this study, we tested the following hypotheses regarding orthopaedic manuscripts submitted for review: (1) nonscientific variables, including receipt of commercial funding, affect the likelihood that a peer-reviewed submission will conclude with a report of a positive study outcome, and (2) positive outcomes and other, nonscientific variables are associated with acceptance for publication. ⋯ Commercially funded studies submitted for review were not more likely to conclude with a positive outcome than were nonfunded studies, and studies with a positive outcome were no more likely to be published than were studies with a negative outcome. These findings contradict those of most previous analyses of published (rather than submitted) research. Commercial funding and the country of origin predict publication following peer review beyond what would be expected on the basis of study quality. Studies with a negative outcome, although seemingly superior in quality, fared no better than studies with a positive outcome in the peer-review process; this may result in inflation of apparent treatment effects when the published literature is subjected to meta-analysis.
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Revision of a failed total hip arthroplasty with massive acetabular bone loss and pelvic discontinuity is a reconstructive challenge. This report presents the mid-term to long-term results of revision total hip arthroplasty with a custom-made porous-coated triflange acetabular prosthesis in a consecutive series of patients with pelvic discontinuity. ⋯ Therapeutic Level IV. See Instructions to Authors for a complete description of levels of evidence.
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J Bone Joint Surg Am · Apr 2007
Early results of conversion of a failed femoral component in hip resurfacing arthroplasty.
A theoretical advantage of resurfacing arthroplasty of the hip is that a failed femoral component can be safely and successfully revised to a total hip arthroplasty. To our knowledge, this advantage has not been demonstrated to date. ⋯ Therapeutic Level III. See Instructions to Authors for a complete description of levels of evidence.
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J Bone Joint Surg Am · Apr 2007
Projections of primary and revision hip and knee arthroplasty in the United States from 2005 to 2030.
Over the past decade, there has been an increase in the number of revision total hip and knee arthroplasties performed in the United States. The purpose of this study was to formulate projections for the number of primary and revision total hip and knee arthroplasties that will be performed in the United States through 2030. ⋯ These large projected increases in demand for total hip and knee arthroplasties provide a quantitative basis for future policy decisions related to the numbers of orthopaedic surgeons needed to perform these procedures and the deployment of appropriate resources to serve this need.
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J Bone Joint Surg Am · Apr 2007
Loss of pin fixation in displaced supracondylar humeral fractures in children: causes and prevention.
Although the results are generally good following pin fixation of supracondylar humeral fractures in children, occasionally there is postoperative displacement. The purposes of the present study were to identify the causes leading to loss of fixation after pin fixation and to present methods for prevention. ⋯ Therapeutic Level III. See Instructions to Authors for a complete description of levels of evidence.