Editorial Commentary: Elevated Tibial Tubercle–Trochlear Groove Distance and Patellar Instability

Abstract In patients with unilateral patellar instability, tibial tuberosity–trochlear groove, lateral patellar tilt, and subluxation are greater on the side of instability. Dynamic computed tomography scan may represent a more physiologic assessment of patellofemoral tracking. A laterally positioned tuberosity may be a predisposing factor for patellar instability, a role perhaps further defined by future dynamic studies of the extensor mechanism.