The Journal of bone and joint surgery. American volume
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J Bone Joint Surg Am · Aug 2010
Obesity, age, sex, diagnosis, and fixation mode differently affect early cup failure in total hip arthroplasty: a matched case-control study of 4420 patients.
Studies about the influence of patient characteristics on mechanical failure of cups in total hip replacement have applied different methodologies and revealed inconclusive results. The fixation mode has rarely been investigated. Therefore, we conducted a detailed analysis of the influence of patient characteristics and fixation mode on cup failure risks. ⋯ Therapeutic Level III. See Instructions to Authors for a complete description of levels of evidence.
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J Bone Joint Surg Am · Aug 2010
Institutional prescreening for detection and eradication of methicillin-resistant Staphylococcus aureus in patients undergoing elective orthopaedic surgery.
Surgical site infection has been identified as one of the most important preventable sources of morbidity and mortality associated with medical treatment. The purpose of the present study was to evaluate the feasibility and efficacy of an institutional prescreening program for the preoperative detection and eradication of both methicillin-resistant and methicillin-sensitive Staphylococcus aureus in patients undergoing elective orthopaedic surgery. ⋯ Therapeutic Level III. See Instructions to Authors for a complete description of levels of evidence.
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J Bone Joint Surg Am · Jul 2010
Randomized Controlled Trial Multicenter Study Comparative StudyDynamic compared with static external fixation of unstable fractures of the distal part of the radius: a prospective, randomized multicenter study.
External fixation is an established method of treating certain types of distal radial fractures. We have designed a dynamic external fixator to treat these fractures. The purpose of the present study was to compare this device with current static bridging external fixators in terms of anatomical and functional results. ⋯ Continuous dynamic traction with a dynamic external fixator compares favorably with the use of static external fixators for the treatment of unstable fractures of the distal part of the radius.
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J Bone Joint Surg Am · Jul 2010
Relationship between declared funding support and level of evidence.
The relationship between industry and the orthopaedic community is under increasing scrutiny. Industry traditionally has funded a substantial amount of the orthopaedic research published in this and other journals. The objective of the present study was to investigate associations between the level of evidence and declared source(s) of funding in papers published in the American volume of The Journal of Bone and Joint Surgery. ⋯ While industry funded a larger number of studies than any other single source in this journal, the level of evidence of industry-funded studies was lower that that for studies funded by governments, foundations, or universities. Improving the scientific quality of industry-funded research might increase the quality of evidence for making orthopaedic decisions.
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J Bone Joint Surg Am · Jul 2010
Comparative StudyFar cortical locking can improve healing of fractures stabilized with locking plates.
Locked bridge plating relies on secondary bone healing, which requires interfragmentary motion for callus formation. This study evaluated healing of fractures stabilized with a locked plating construct and a far cortical locking construct, which is a modified locked plating approach that promotes interfragmentary motion. The study tested whether far cortical locking constructs can improve fracture-healing compared with standard locked plating constructs. ⋯ Inconsistent and asymmetric callus formation with locked plating constructs is likely due to their high stiffness and asymmetric gap closure. By providing flexible fixation and nearly parallel interfragmentary motion, far cortical locking constructs form more callus and heal to be stronger in torsion than locked plating constructs.