抄録
This study was carried out to show the clinical effects of medial displacement of the tibial tuberosity in young patients with patellar dislocation or subluxation. It had been done on 12 knees with patellofemoral disorders of 12 patients (3 men and 9 women, ranging in age from 15 to 36 (average 22.9) . Follow-up assessment was performed at an average of 2.4 years after surgery (range, 1.3 to 3.6) .
Preoperative pain on going downstairs had been noted in 8 knees and was relieved in all of them postoperatively. Retro-patellar crepitation was relieved in 4 of 11 knees, patellar pain on grating in 5 of 6, tenderness around the patella in 6 of 8, pain on passive motion of the patella in 7 of 9, and extension pain on holding the patella in 5 of 6. The delay in
key words: patello-femoral joint, patellar subluxation, patellar dislocation, chondromalacia, displacement of tibial tubercule
improvement of retro-patellar crepitation may bedue to cartilage regeneration. The patellar subluxation was observed to be repositioned in the sky-line view in all knees. Patellar height measured on lateral view X-rays by the Insall-Salvati method showed on the average no change postoperatively.
