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patients having staged bilateral procedures. The mean follow up was 84 months (range 24 – 204months). The mean age was 45 (range 26 – 59) and the female to male ratio was 7.6:1. 70patients were reviewed giving a follow up rate of 82%. The mean Oxford Knee Score was 18.5pre-operatively (range 3- 32) and 34.3 post-operatively (range 11- 47). The Melbourne PatellaScore was 9.6 pre-operatively (range 3- 30) and 20 post-operatively (range 11- 30). PatientSatisfaction Scores were excellent (54%), good (29%), fair (8.5%) and poor (8.5%). 4 knees in 3patients were converted to a patello-femoral arthroplasty, giving a 10 year survival rate of96.1%.This procedure offers an alternative to patello-femoral arthroplasty for younger patients withisolated patello-femoral arthritis.Poster: 93Post-Operative Morbidity and Mortality Associated With Primary TotalKnee and Unicompartmental Knee Arthroplasty*Neil Sheth - OrthoCarolina - Charlotte, USANick Brown - Rush University - Chicago, USAMario Moric - Rush University - Chicago, USAKeith Berend - Joint Implant Surgery, Inc. - New Albany, USAMichael Edward Berend - - Mooresville, USA*Email: neilshethmd@gmail.comINTRODUCTION: The purpose of this study was to compare the incidence of post-operativecomplications (within 90 days) following primary total knee arthroplasty (TKA) as compared tounicompartmental knee arthroplasty (UKA).METHODS: 1,067 Consecutive patients were retrospectively reviewed over 5 years at a singleinstitution; 853 underwent primary TKA and 214 underwent UKA. Bilateral procedures anddiagnoses other than osteoarthritis were excluded. Both groups were matched for age, howeverthere were more females in the TKA group (72% vs. 57%; p = 0.021). Body mass index andCharlson Co-morbidity index scores were significantly higher in the TKA group (33.1 vs. 28.6;p < 0.001 and 0.78 vs 0.47; p < 0.01, respectively).RESULTS: Seventy-four (9%) TKA patients had a major post-operative complicationcompared to four (1.9%) UKA patients (p < 0.001). Manipulation under anesthesia (4.8% vs.0.5%; p = 0.0013), blood transfusions (4.8% vs. 0%; p < 0.001) and admission to an intensivecare unit (2.4% vs. 0%; p=0.01) were more common following TKA than UKA. SeventeenTKA patients (2.0%) required a re-operation compared to one UKA patient (p < 0. 001) and 61TKA patients (7.2%) were re-admitted to the hospital for a secondary intervention compared totwo (1%) (p< 0. 001) UKA patients. Length of stay was longer following TKA (4.1 days vs. 2.0file:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]