Learn about the causes of knee pain while bending your leg, as well as when to see a doctor, diagnosis, treatment, and prevention.

Toguchi A, Noguchi N, Kanno T, Yamada A. Methylsulfonylmethane improves knee quality of life in participants with mild knee pain: A randomized, double-blind, placebo-controlled trial. Nutrients ...

A knee contusion (bruise) typically happens due to trauma, such as a fall, with symptoms that include pain, stiffness, swelling, and skin discoloration. Most knee contusions aren't serious, but some ...

An anterior cruciate ligament (ACL) tear is a knee joint injury that usually occurs while playing sports. It causes leg pain and instability of the knee. This is one of the most common injuries among ...

Objectives Low-level laser therapy (LLLT) is not recommended in major knee osteoarthritis (KOA) treatment guidelines. We investigated whether a LLLT dose–response relationship exists in KOA. Design ...