Sep 18, 2022 / Guide

Knee osteoarthritis is a condition that results from degenerative changes to the cartilage between the bones of the knee joint. Physical therapists help people with knee OA to reduce pain and improve mobility.

Sep 3, 2018 / Guide

Spine osteoarthritis is a condition that usually occurs with aging and is typically diagnosed after age 50.

Jan 11, 2020 / Guide

Osteopenia is lower-than-normal bone density or thickness (low bone mass). It is often confused with osteoporosis, a condition involving more severe bone loss.

Mar 28, 2018 / Guide

Osteoporosis is a common disease that causes a thinning and weakening of the bones and increases the risk for bone fracture due to falls.

Jun 12, 2021 / Guide

Perthes disease is a rare hip condition that begins with a disruption of blood flow to the head of the femur (thigh bone). It most often occurs in children 4 to 8 years old.

Oct 27, 2025 / Guide

Pes anserine bursitis causes pain on the inside of the knee and lower leg. This guide explains symptoms, causes, and how physical therapy helps relieve pain and improve movement.

Aug 6, 2018 / Guide

Phantom limb pain is a painful or unpleasant sensation in a body part that has been surgically amputated or lost due to trauma.

Jun 18, 2021 / Guide

Pitcher’s elbow (medial apophysitis) occurs as a result of an injury or irritation to the inside of the elbow. Sometimes called little league elbow, it is most common in young athletes ages 11 to 15 who play sports with repeated overhead movements.

Mar 10, 2026 / Guide

Plica syndrome causes knee pain. This guide explains plica syndrome, including causes, symptoms, diagnosis, and physical therapy treatment to address pain, improve strength, and restore healthy movement.

Aug 31, 2020 / Guide

Posterior cruciate ligament, or PCL, injury occurs when one of the ligaments on the inside of the knee gets overstretched.