Lateral retinaculum

Lateral Retinaculum

The Lateral Retinaculum is a complex structure in the human knee that plays a crucial role in maintaining the stability and functionality of the joint. It is composed of several distinct parts, including the lateral patellar retinaculum and the lateral patellofemoral ligament.

Anatomy

The lateral retinaculum is located on the outer side of the knee. It is a broad and thin fibrous expansion, which covers the lateral aspect of the knee joint. It is attached to the patella (knee cap) and extends to the lateral condyle of the tibia (shin bone).

The lateral retinaculum is composed of two layers: the superficial oblique retinaculum and the deep transverse retinaculum. The superficial layer is a continuation of the iliotibial tract, while the deep layer is a distinct structure that helps to stabilize the patella.

Function

The primary function of the lateral retinaculum is to stabilize the patella and prevent it from dislocating or moving excessively to the side. It also helps to maintain the alignment of the patella in relation to the femur (thigh bone) and tibia.

Clinical Significance

Injury or tightness of the lateral retinaculum can lead to a condition known as patellar tracking disorder, where the patella moves out of its normal position in the knee joint. This can cause pain, swelling, and limited mobility. Treatment may involve physical therapy, medication, or in severe cases, surgery to release or repair the retinaculum.

See Also

• Knee
• Patella
• Iliotibial band
• Patellar tracking disorder