@entity348 following prior XXXX .

@entity1 @entity154 @entity625 @entity174 @entity5827 @entity4218 @entity281 @entity348 @entity158 @entity85 @entity3330 @entity130
BACKGROUND: @entity3330 may predispose the knee to the development of post-traumatic @entity625 by either a direct intra-articular @entity130 . Malunion, intra-articular @entity154 , @entity4218 , retained internal fixation devices, and compromised surrounding soft tissues may in turn affect the outcome of @entity348 ( @entity348 ) in these @entity1 . The aim of our study was to evaluate the result of @entity348 in @entity1 with previous @entity3330 . METHODS: The results of 48 cemented condylar total knee arthroplasties, performed between 1980 to 1998, in 47 @entity1 with a previous @entity3330 were reviewed. There were 37 females and 10 males with an average age of 65 years (range, 19-84 years). Follow-up averaged 6.2 years (range, 2-16 years). No @entity1 were lost to follow-up. RESULTS: At the time of arthroplasty a femoral @entity174 was present in three knees, all of which were treated with a long stem cemented femoral component and bone grafting. Malunion, defined as angulation greater than 10 degrees in the coronal plain or greater than 15 degrees in the sagittal plain, was present in 21 knees. Of these, six underwent distal femoral osteotomy during @entity348 . In the remaining 15 @entity1 , with a @entity85 was addressed by alterations in the orientation and location of bone resection. Other procedures were commonly needed at the time of arthroplasty and included: lateral retinacular release (22 knees), extensor mechanism realignment (eight knees), and collateral ligament reconstruction (two knees). The mean pre-operative Knee Society Scores were 40 (range, 0-80) for @entity158 and 48 (range, 0-100) for function and improved significantly to a mean of 84 (range, 37-99) and 66 (range, 0-100) points, respectively, at the latest follow-up (P<0.001). The knee arc of motion improved from a pre-operative mean of 83-99 degrees at the latest follow-up (P<0.004). Post-operative manipulation under anesthesia for poor motion was carried out in four knees. Two knees had @entity5827 loosening that required subsequent revisions. Three knees developed @entity281 which was treated with debridement and retention of components in one knee, arthrodesis in another, and eventual amputation in one knee. CONCLUSIONS: Significant improvement in function and relief of @entity158 is seen in the vast majority of @entity1 with previous @entity3330 undergoing subsequent @entity348 . However, these @entity1 are at increased risk for restricted motion and perioperative complications following @entity348 . Special efforts to preserve the vascularity of the skin and subcutaneous tissues, restore limb alignment, ensure correct component positioning, and achieve soft tissue balance may help minimize the problems identified in this study.
