Rectus Femoris

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The knee is a very crucial structure in the human body. It plays an extremely essential role in human movement. The weight that is put through the knee at one time can be over extravagant and the way it takes the weight and controls the body is truly unbelievable and fascinating. It carries the weight forwards and backwards while walking, and upward and downwards while jumping.

The anatomical structure that stabilizes the knee can be divided into 4 areas.
Anterior, Posterior, Lateral or Medial. These structures enable the joint to move, while also providing stabilisation and support, offered to not only the knee, but also other muscles and tendons around it.

Anterior Compartment:

The four muscles in the anterior compartment are called rectus femoris, vastus medialis,
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It is a weaker hip flexor when the knee is extended because it is already shortened. The Rectus Femoris is considered an “antagonist” to the hamstrings

Vastus Medialis: Located in the thigh, it is a co-ordinator throughout the control of the extension of the knee. The Vastus Medialis is attatched to the Femur.

Vastus Lateralis: It is the largest part of the thigh. The fibres run in a 12-15 degrees lateral direction to the Femur. If it has extreme tightness, it can cause real pain and discomfort because it may push the Patella out of place.

Vastus Intermedialis: its Fibers run nearly in a directly vertical line and contribute to the full extension of the knee. Due to this, it is the hardest muscle out of the four to extend even further after the knee is fully extended, it cannot be further stretched by hip extension.

Posterior Compartment:

Posterior Cruciate Ligament: One of the four major ligaments of the knee. The PCL prevents the Femur from moving too far forward over the tibia. The knee is nearly 2 times stronger than the ACL and is the knees main

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