Knee Patient Resources
Official OrthoInfo guides on knee conditions and surgery.
Table of Contents
Guides
Official OrthoInfo guides on knee conditions and surgery. Select View PDF to read a guide in a new tab.
Anterior Cruciate Ligament (ACL) Injuries
An OrthoInfo guide to ACL injuries, a common sports-related knee ligament tear.
Arthritis of the Knee
An OrthoInfo guide to wear-and-tear arthritis of the knee joint.
Meniscus Tears
An OrthoInfo guide to meniscus tears, damage to the knee's cushioning cartilage.
Unstable Kneecap (Patellar Instability)
An OrthoInfo guide to a kneecap that slips or dislocates out of place.
Iliotibial Band (IT Band) Syndrome
An OrthoInfo guide to IT band syndrome, an overuse injury causing outer-knee pain.
Common Knee Injuries
An OrthoInfo guide to the most frequent knee injuries and how they present.
Compartment Syndrome
An OrthoInfo guide to compartment syndrome, a serious pressure build-up in the leg's muscle compartments.
Fracture After Total Knee Replacement
An OrthoInfo guide to managing a fracture near a previous knee replacement.
Infection After Joint Replacement
An OrthoInfo guide to recognising and treating infection after a joint replacement.
Patellar Tendon Tear
An OrthoInfo guide to tears of the tendon connecting the kneecap to the shin.
Posterior Cruciate Ligament Injuries
An OrthoInfo guide to PCL injuries, a less common but significant knee ligament tear.
Prepatellar (Kneecap) Bursitis
An OrthoInfo guide to bursitis in front of the kneecap, often from kneeling.
Quadriceps Tendon Tear
An OrthoInfo guide to tears of the tendon connecting the thigh muscle to the kneecap.
Have a question about your knee?
Medically reviewed by Dr Paul Ryan, Orthopaedic Surgeon (HPCSA Mp0541214). Last reviewed 2026-09-17. This page is general information and does not replace a consultation. Guides reproduced from OrthoInfo (orthoinfo.aaos.org), the patient education resource of the American Academy of Orthopaedic Surgeons (AAOS), with permission.
Related: Knee Conditions · Knee Treatment · Hip Resource