A Positive Quadriceps Active Test, without the Quadriceps Being Active

Figure 1

Anteroposterior and lateral radiographs showing the healed proximal tibia fracture and posterior subluxation of the tibia. Weight-bearing AP (a) and lateral (b) radiographs of MR AD showing evidence of a healed proximal tibia and fibula fracture and posterior subluxation of the tibia on the femur. Importantly, the posterior slope of his proximal tibia is within normal limits measuring 6 degrees.

(a)

(b)