Anterior opening wedge osteotomy of the proximal tibia for anterior knee XXXX in idiopathic hyperextension knees.

@entity1 @entity571 @entity281 @entity158 @entity3762
We analysed 20 @entity1 with 24 knees affected by @entity3762 who were treated with an anterior opening wedge osteotomy of the proximal tibia because of anterior knee @entity158 . We managed to attain full satisfaction in 83% of the @entity1 with a mean follow-up of 7.4 years. The mean Hospital for Special Surgery score was 90.3 (range 70.5-99.5), and the mean Knee Society score score was 94.6 (70-100) for function and 87.7 (47-100) for @entity158 . The mean Western Ontario and @entity571 Index score for knee function was 87.5 (42-100), for stiffness 82.8 (25-100) and for @entity158 87.3 (55-100). Radiographs showed a significant increase in posterior tibial slope of 9.4 deg and a significant decrease of patellar height according to the Blackburne-Peel method of 0.16 postoperatively. No cases of non-union, deep @entity281 were seen. No osteoarthritic changes in the lateral or medial knee compartment were found with more than 5 years' follow-up in 16 @entity1 with 19 affected knees. Three out of the four dissatisfied @entity1 had a patella infera which led to patellofemoral complaints. One @entity1 in the study underwent a secondary superior displacement of the patella with excellent results. We conclude that in a selected group of @entity1 with @entity3762 and anterior knee @entity158 an opening wedge osteotomy of the proximal tibia can be beneficial.
