Although trochleoplasty has been shown to recreate a more normal patellofemoral joint anatomy (85,86) and increase patellar stability, (87) outcomes after trochleoplasty have been variable.
Trochleoplasty, although highly successful in the prevention of recurrence, may create an incongruous patellofemoral joint and predispose patients to chronic patellofemoral pain.
CT changes after trochleoplasty for symptomatic trochlear dysplasia.
The effect of trochleoplasty on patellar stability and kinematics: a biomechanical study in vitro.
A prospective evaluation of trochleoplasty for the treatment of patellofemoral dislocation and instability.
A trench type trochleoplasty is technically difficult to perform, and there is concern that there is potential disruption of the cartilage surface or change in contact pressure that may lead to postoperative pain and arthrosis.
In 2005, Verdonk and coworkers (58) performed a Henri Dejour trochleoplasty on 13 patients complaining of recurrent patellar dislocations or persistent retropatellar pain due to a dysplastic femoral trochlea.