The Table below summarises several conditions that can cause mechanical knee pain:
Patellofemoral pain / chondromalacia patellae.
Worse with activity.
Pain or crepitus on patellar tracking.
Reduction of patella, Mobilisation.
Physiotherapy, Orthopaedics if recurrent dislocation.
Osgood Schlatter's disease.
Pain on activity.
Pain on resisted extension.
Tender (+/- swollen tibial tuberosity).
Sinding-Larsen Johannsson disease.
Pain lower pole patella.
Tender lower pole patella.
Worse on extension.
Pain on flexion.
May be tenderness.
NSAIDs, activity modification.
May be normal.
Tenderness, effusion, joint restriction.
Yes – may need arthroscopic removal of loose body.
Swelling (soon after injury).
Large, tense effusion.
May need MRI / aspiration.
Fat Pad impingement.
Pain when knee flexed suddenly.
Orthopaedics if severe or causing functional limitation.
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