Trochleoplasty

Trochlear dysplasia as classified by Dejour gives us a guideline on management

 B and D need removal of the bump and lateralisation of the trochlear groove and deepening plasty. the results as far as dislocation are satishfatory but pain and long term OA chances are still grey

the case below is a 3o year old female with  recurrent patellar instability with lax mpfl and trochlear dyspalsia