Knee instability

When the knee is extended, the medial and lateral collateral ligaments are stretched and prevent rotation of the joint. When you are standing, the knee locks in extension, and there is no need for muscle tension to stabilize the joint.

When the knee is bent, the medial and lateral collateral ligaments are relaxed. In this position muscle tension provides the stability.

When the knee flexes and rotates, the meniscus travels forward. Then, if extension is not controlled, the meniscus may not return to its normal position fast enough and becomes pinched between the condyles, which can tear the meniscus. If a piece of the meniscus is severed when it is pinched, surgery may be necessary to remove it.

With asymmetrical exercises such as the lunge (see page 116), control the speed and the form of the movement to protect the knee.

MENISCI

With meniscus No meniscus

MENISCI

With meniscus No meniscus

One of the main functions of the meniscus is to disperse pressure in the knee joint by increasing the supporting surface area for the femur on the tibia, avoiding premature wear on the articular surfaces.

MENISCI AND KNEE LIGAMENTS

Anterior cruciate ligament

Lateral collateral ligament

Lateral meniscus

Posterior Lateral Meniscus

Posterior cruciate ligament

Medial collateral ligament

Medial meniscus

Anterior cruciate ligament

Lateral collateral ligament

Lateral meniscus

MENISCI AND KNEE LIGAMENTS

Posterior cruciate ligament

Medial collateral ligament

Medial meniscus

Medial collateral ligament

CD KNEE IN EXTENSION 0 KNEE IN FLEXION

When the knee is flexed, the lateral ligaments are relaxed, Rotation of the joint is possible.

Medial collateral ligament

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