Jakob Ackermann

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...

Tibial Tubercle‐Posterior Cruciate Ligament Distance Fails to Capture Pathologic Patellar Lateralization in Trochlear Dysplasia

PURPOSE: To compare tibial tubercle-trochlear groove (TT-TG) and tibial tubercle-posterior cruciate ligament (TT-PCL) distances across grades of trochlear dysplasia (TD) in patients with patellofemoral instability, to evaluate their relations with knee rotation angle (KRA) and pa...