[Anterior displacement of tibial tubercle in the treatment of patellofemoral arthritis].

This paper reports 41 cases (44 knees) with Patellofemoral arthritis treated by anterior displacement of tibial tubercle (modification of the classic maquet procedure of anterior displacement of tibial tubercle). Their average age was 47.5 years. 31 cases (34 knees) were followed-up for an average of 5 years and 7 months. Excellent results amounted to 64% and good results to 26%. Among theme, 12 cases were malalignment, 1 with lateral displacement of patella, 1 with subdislocation of patella and 7 with varus deformity of knee. Anterior displacement of tibial tubercle plus simultaneous proximal realignment operation was performed in 3 cases, plus distal realignment operation in 9 cases and plus coventry operation in 7 cases.