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femur may occur at the site of important ligamentous origins and insertions, compromisingligamentous function and host bone. The patellar component polyethylene method ofsterilization likely contributed to the osteolysis. Caution regarding long-term results of currentgeneration patellofemoral arthroplasty implants may be extrapolated from this 15-year casereport. Revision of this long-term arthroplasty is not a ‘simple revision’ and patients undergoingcurrent generation patellofemoral arthroplasty procedures should be followed closely for similarradiographic changes.Summary: The dramatic longterm osteolysis associated with isolated patellar arthroplasty mayinvolve tibial and femoral ligamentous attachments, compromising host bone and future TKAsurgery.Poster: 12Intraoperative Evaluation of the Gender Knee*Harold Cates - Tennessee Orthopaedic Clinics - Knoxville, USABrian Edkin - Tennessee Orthopaedic Clinics - Oak Ridge, USAJohn Schmidt - Tennessee Orthopaedic Foundation for Education and Research - Knoxville,USA*Email: cateshe@tocdocs.comThe purpose of this study was to determine if the Gender Solutions NexGen® knee (Zimmer,Warsaw, IN) was successful in reducing femoral component overhang in women, which hasbeen linked to joint pain. 1 This study compiled intraoperative data on 900 primary TKAs,including type of implant (gender vs. standard NexGen®) and measurement of femoraloverhang. Comparative analysis showed that in 72% of cases the standard femoral componentsoverhung in at least one zone, and the gender specific femoral component was selected in 70%of cases to correct this. In 15% of cases, better passive patellofemoral tracking was alsoobserved in the gender component than in the standard. These findings suggest that the genderspecific system does indeed address the need for femoral component sizing specific to women.1. Mahoney OM and Kinsey T. Overhang of the Femoral Component in Total KneeArthroplasty: Risk Factors and Clinical Consequences. J Bone Joint Surg Am. 2010;92:1115-21file:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]