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A Comparison of the Results of Total Hip and Knee Arthroplasty Performed on a Teaching Service or a Private Practice Service
Steven T. Woolson, MD1; Michael N. Kang, MD1
1 Stanford University Medical Center, R144, Stanford, CA 94305. E-mail address for S.T. Woolson: swoolson@stanford.edu
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Disclosure: The authors did not receive any outside funding or grants in support of their research for or preparation of this work. Neither they nor a member of their immediate families received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, division, center, clinical practice, or other charitable or nonprofit organization with which the authors, or a member of their immediate families, are affiliated or associated.
Investigation performed at Stanford Hospital, Stanford, California

The Journal of Bone and Joint Surgery, Incorporated
J Bone Joint Surg Am, 2007 Mar 01;89(3):601-607. doi: 10.2106/JBJS.F.00584
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Abstract

Background: Active participation of residents and fellows in the performance of total hip and total knee arthroplasties may affect the outcomes of these procedures. We evaluated the early clinical results and complications associated with primary total hip and knee arthroplasties at a hospital that had both university teaching and private practice orthopaedic services.

Methods: We performed a retrospective study on a consecutive series of 347 patients who had undergone 230 total hip and 171 total knee procedures performed by one attending surgeon. One hundred and sixty-nine patients underwent an arthroplasty during which a resident or fellow on a teaching service assisted the attending surgeon; during these procedures, the resident or fellow performed part of the arthroplasty under the direct supervision of the attending surgeon. Subsequently, 178 patients underwent an arthroplasty performed by the same surgeon without resident or fellow participation.

Results: Significantly longer operative times were recorded for both total hip arthroplasty (average, seventy-three compared with sixty-one minutes; p < 0.0001) and total knee arthroplasty (average, eighty compared with seventy-three minutes; p = 0.0028) when the procedures were performed with the participation of residents or fellows. For total hip arthroplasty the complication rates were 8% for the teaching service and 10% for the private practice service, and for total knee arthroplasty they were 3% for each service. With the numbers studied, there were no differences in any clinical outcomes between the groups.

Conclusions: Teaching and active participation from residents and fellows during total hip and total knee arthroplasty did not have a detrimental effect on the early clinical results, except for a longer surgical time.

Level of Evidence: Therapeutic Level III. See Instructions to Authors for a complete description of levels of evidence.

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    Accreditation Statement
    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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