The ligamentum collaterale fibulare, commonly known as the fibular collateral ligament or lateral collateral ligament, is a band-like structure located on the outside of the knee joint. It is one of the major ligaments responsible for stabilizing the knee and preventing excessive sideways movement of the lower leg bone (fibula).
This ligament attaches the lateral (outer) side of the knee joint, specifically the lateral epicondyle of the femur (thigh bone), to the head of the fibula (lower leg bone). It runs diagonally across the knee joint and works in conjunction with other ligaments to maintain proper alignment and integrity of the joint.
The ligamentum collaterale fibulare acts as a primary restraint against varus stress, which is a force that pushes the lower leg bone away from the midline of the body. It resists and limits excessive movement of the knee in the lateral direction during weight-bearing activities such as walking, running, and jumping.
Injury to the ligamentum collaterale fibulare is commonly referred to as a lateral collateral ligament (LCL) sprain. It can occur due to sudden or gradual overstressing of the ligament, such as during sports activities or trauma to the knee. LCL sprains are often accompanied by pain, swelling, instability, and difficulty bearing weight on the affected leg.
Treatment for ligamentum collaterale fibulare injuries typically involves rest, ice, compression, elevation, and immobilization. Severe cases may require surgical intervention to repair or reconstruct the damaged ligament. Rehabilitation and physical therapy are crucial in the recovery process to regain strength, stability, and range of motion of the knee joint.
