Which finding most strongly suggests patellar tendinopathy rather than PFPS?

Which finding most strongly suggests patellar tendinopathy rather than PFPS?

• A. Palpable thickening of the patellar tendon
• B. Excessive dynamic knee valgus
• C. Pain with squatting
• D. Pain with running and stairs

Answer: (C)

The key idea here is tissue-specific pain provocation: patellar tendinopathy causes pain when the tendon itself is loaded, while PFPS tends to show pain from patellofemoral joint compression and tracking rather than tendon loading alone. Deep knee bending, as in squatting, places high tension on the patellar tendon. If pain is elicited specifically during squatting, it points to pathology of the tendon rather than a joint tracking problem. PFPS, on the other hand, more commonly presents with pain during activities that compress the patellofemoral joint like stairs or running and is often related to maltracking or joint contact rather than a primary tendon issue. While other signs like thickening of the tendon can support tendinopathy, pain with squatting is the most direct indicator that the tendon itself is the pain generator.

The key idea here is tissue-specific pain provocation: patellar tendinopathy causes pain when the tendon itself is loaded, while PFPS tends to show pain from patellofemoral joint compression and tracking rather than tendon loading alone. Deep knee bending, as in squatting, places high tension on the patellar tendon. If pain is elicited specifically during squatting, it points to pathology of the tendon rather than a joint tracking problem. PFPS, on the other hand, more commonly presents with pain during activities that compress the patellofemoral joint like stairs or running and is often related to maltracking or joint contact rather than a primary tendon issue. While other signs like thickening of the tendon can support tendinopathy, pain with squatting is the most direct indicator that the tendon itself is the pain generator.