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.