Sunny Deo - Knee Surgeon Swindon, Keyhole Knee Surgery & Sports Clinic



While direct blows to the knee will occur, the knee is also susceptible to twisting or stretching injuries, taking the joint through a greater range of motion than it can tolerate.

If the knee is stressed from a specific direction, the ligament trying to hold it in place against that force can tear. Minor ligament stretching or tears are called sprains. These injuries are typically graded as
  • Grade-one sprains stretch the ligament but don't tear the fibers more significant force transforming through the joint will cause more damage;
  • Grade-two sprains partially tear the fibers, but the ligament remains intact; and
  • Grade-three tears completely disrupt the ligament.

Twisting injuries to the knee can also put stress on the cartilage or meniscus and can pinch it between the tibial joint surface and the edges of the femoral condyle, causing tears.

Injuries of the muscles and tendons surrounding the knee are caused by acute hyperflexion or hyperextension of the knee or by overuse. These injuries are called strains. Strains are graded similarly to sprains, with first-degree strains stretching muscle or tendon fibers but not tearing them, second-degree strains partially tearing the muscle tendon unit, and third-degree strains completely tearing it.

Knee Biomechanics
Knee Anatomy
Knee Conditions
Bursae & Cysts
Cartilage (meniscal) & joint surface tears
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