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Tateaki Shimakawa - Tokushima Municipal Hospital - Tokushima, JapanAkira Minato - Tokushima Municipal Hospital - Tokushima, Japan*Email: platina_mikimiki@yahoo.co.jpPermanent patellar subluxation is treated with surgeries such as proximal realignment and distalrealignment, ; however, it is difficult to cure this condition by using any methods. Weperformed mobile-bearing total knee arthroplasty (TKA) in a case of severe knee osteoarthritiscomplicated with permanent patellar subluxation since childhood, and obtained good resultswithout performing any additional procedures.The patient was an 82-year-old woman with severe pain in the left knee. During the initialexamination, the range of motion of the left knee joint was -10°of extension to 140°of flexion,and the Japanese Orthopaedic Association (JOA) score for knee osteoarthritis was 40points(maximum score : 100). Preoperative radiographs showed a varus deformity in the leftlower extremity with a femorotibial angle (FTA) of 188°, the axial view showed luxation of thepatella.We performed TKA using a mobile-bearing implant. Intraoperative findings revealed that thecentral articular surface of the distal femur had disappeared, and that the patellar articularsurface was concave and dome-shaped. The lateral patellofemoral ligament was released; thisprocedure was identical to that performed in conventional TKA.Postoperative radiographs showed good alignment, with an FTA of 173°. In the axial view, thepatella was located in a reduced position at any angle of knee joint flexion.The postoperative range of motion of the left knee joint was 0°of extension to 130°of flexion.The patient was able to walk without the support of a T-shaped cane.There are many surgical treatments for permanent patellar subluxation. The appropriatetreatment is selected according to the type and seriousness of the dislocation and the age of thepatient.From the findings of the present case, we believe that in a case of knee osteoarthritiscomplicated with permanent patellar subluxation, surgery performed using a mobile-bearingimplant would eliminate the necessity of performing additional proximal realignment and distalrealignment.Thursday, October 7, 2010, 11:00-11:20Session B4: Ethnic and Gender Issues in TKR.Sizing and Sature in TKA: Surgical Implications and Considerations*Philippe Van Overschelde - AZ MARIA MIDDELARES GENT - Gent, BELGIUM*Email: philippe@vanoverschelde.comMore than two thirds of TKA are performed on women. Most TKA systems are based on themale anatomy. Therefore one could ask if a women specific design is needed in Kneefile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]