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Materials and Method4 cases and 5 knees (OA: 2 cases 3 knees, RA: 2 cases 2 knees) more than 2 years after the IBGprocedure was done using X-changed rim mesh for the large medial tibial defect. All 4 caseswere ladies, with the average age being 66.2 years old at that point of the procedure.　A medial and posterior release for the connective tissues of knee was performed. The post andpre radiographic evaluations were done by knee society score and JOA score.　All the defector abrasion of the weighted surface was more than 5 mm from the last stage of osteoarthritis.We used a posterior-stabilized type of TKA (Zimmer nexgen), then took radiographs at pre andpost operation periods and evaluated the knee scores, FTA, radiolucent line, range of motionand more than 2 years after the operation.ResultThe graft bones were not depressed after more than 2 years and all the patients were satisfiedthe condition of their knees and made no mention of any knee pain. The average range ofmotion of their knee joint was: Pre-operation, passive flexion 133°, passive extension -21°; Post-operation, passive flexion 149°, passive extension -3°. All of the patients did notcomplain during movement and their walking ability including going up and down stairs wasnot reduced more than 2 years later. The component placement angle was not changed. Theradiolucent line of the femur and tibiae did not appear.The average femoro-tibial angle improved from 197° to 173° over the course of two years. Thefemoral/tibial component setting angle was not changed more than 2 years after the TKAoperation procedure. Radiolucent zone and component sinking was not seen on both side offemur and tibiae.ConclusionAfter this survey we've found that an IBG procedure with an X-changed rim mesh is a goodtreatment for large bone defect of the tibiae. We can use this technique if we are not ableto take out en bloc bone from their own tibiae or if their en bloc bone is crushed into pieceswhen trying to fix the bone to their tibiae because of bone fragility.Friday, October 8, 2010, 7:30-8:30Session B9: Complications in ArthroplastyControlled Release of Antibiotics From HA Used in Bone Cement With HA*Hiroyuki Oonishi - H.OONISHI Memorial Joint Replacement Institute, Tominaga Hospital -Osaka, JapanShigekazu Mizokawa - H. Oonishi Memorial Joint Replacement Institute, Tominaga Hospital -Osaka, JapanHironobu Oonishi - H. Oonishi Memorial Joint Replacement Institute, Tominaga Hospital -Osaka, Japanfile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]