A Patient with a History of Recurrent Dislocation of the Patella

A patient with a history of recurrent dislocation of the patella underwent a surgical procedure for realignment of the extensor mechanism.Considering the position of immobilization postoperatively, you would expect to find each of the following impairments when it is permissible to begin exercises except:

A) Lack of full or almost full passive knee extension.
B) Quadriceps (extensor) lag.
C) Lack of full knee flexion.
D) Weakness of the quadriceps and hamstrings.