Patellofemoral maltracking

Case contributed by Dr Henry Knipe


Painful right knee.

Patient Data

Age: 25 years
Gender: Female

Quadriceps and patellar tendons are intact. High riding patella (Insall-Salvati ratio 1.51) with lateral translation and tilt. TT-TG is borderline (13 mm). Trochlea is well formed. Full-thickness chondral wear of the lateral femoral trochlea characterized by subchondral edema. Pre-femoral fat pad and superolateral Hoffa's fat pad edema.

Case Discussion

MRI findings of patellofemoral maltracking/instability with pre-femoral fat pad and Hoffa fat pad edema and patella alta. The diagnosis of patellofemoral maltracking ultimately hinges on clinical assessment. 

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