Outcomes after trochleoplasty.

[trochlear dysplasia]

Trochlear dysplasia is a risk factor for patellofemoral instability . Trochleoplasty involves reshaping the trochlear groove to provide increased patellofemoral stability . We obtained post-operative radiographs , MRI , and outcome scores in 6 patients who underwent this procedure . All 6 of the patients were satisfied with their outcome following trochleoplasty with no recurrent instability events . Mean bony sulcus angles decreased from 148 degrees to 129 degrees . However , 4 of the 6 patients reported anterior knee pain . Similar to previously published studies , trochleoplasty can reliably improve patellofemoral stability in patients with severe trochlear dysplasia , but a high percentage of patients will have pain postoperatively .