High-Grade Trochlear Dysplasia Confounds Patellar Height Assessment Using the Magnetic Resonance Imaging-Derived Patellotrochlear and Radiograph-Derived Caton-Deschamps Indices.
PURPOSE To compare patellotrochlear index (PTI) and Caton-Deschamps index (CDI) measurements between normal and dysplastic trochleae, to evaluate the ability of PTI to discriminate patella alta, and to examine the relation of both indices with functional engagement as represented by the instability resolution angle (IR...