Common causes of chronic knee pain associated with overuse

Pain develops after reaching specific intensity of activity Pain progresses over time, becoming increasingly disabling Pain generally has been present for six weeks or longer
Anterior knee pain or poorly localized pain	Medial knee pain	Posterior knee pain	Lateral knee pain
Patellofemoral pain syndrome	Pes anserine bursitis & tendinopathy	Hamstring tendinopathy	Iliotibial band syndrome
Patellar tendinopathy	Degenerative meniscus	Baker's cyst	Degenerative meniscus
Osteoarthritis	Medial hamstring tendinopathy		Biceps femoris (lateral hamstring) tendinopathy
Prepatellar & infrapatellar bursitis	Medial plica syndrome		Popliteus tendinopathy
Osgood Schlatter syndrome	MCL laxity		LCL laxity
Quadriceps tendinopathy
Chronic patella subluxation
Intra-articular stress fracture
ACL or PCL laxity

ACL: anterior cruciate ligament; LCL: lateral collateral ligament; MCL: medial collateral ligament; PCL: posterior cruciate ligament.

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