Anterior knee pain

Patellar subluxation or dislocation

Tibial apophysitis (Osgood-Schlatter lesion)

Jumper's knee (patellar tendonitis)

Patellofemoral pain syndrome (chondromalacia patellae)

Medial knee pain

Medial collateral ligament sprain

Medial meniscal tear

Pes anserine bursitis

Medial plica syndrome

Lateral knee pain

Lateral collateral ligament sprain

Lateral meniscal tear

Iliotibial band tendonitis

Posterior knee pain

Popliteal cyst (Baker's cyst)

Posterior cruciate ligament injury