Fig. 15
From: Role of magnetic resonance imaging in the evaluation of the anterior knee pain
a–d MRI images for lateral patellar tilt with patella alta and trochlear dysplasia type C as predisposing factors. a Axial T2-weighted image showed loss of contact between the patellofemoral joint surfaces laterally. b Axial T2-weighted image showed trochlear facet asymmetry 32% (normally not less than 40%). c Axial T2-weighted image showed lateral inclination angle 9.3° (normally not less than 11°). d Axial T2-weighted image showed a trochlear depth of 1.5 mm (normally up to 3 mm). e Sagittal PDWI showed patella alta (Insall–Salvati index about 1.5)