Quadratus femoris

The primary function of the quadratus femoris muscle is external rotation of the thigh at the hip joint. It also assists in stabilization of the hip during various movements, such as walking, running, and jumping. By laterally rotating the femur, it enables efficient stride and contributes to maintaining the alignment of the pelvis and lower limb. This muscle works in coordination with other deep hip rotators and abductors, enhancing overall mobility and strength during physical activities. Its role is particularly important in activities that require rotation, such as martial arts or dance, where precise control of hip movements is crucial.

The quadratus femoris is located at the back of the hip joint, specifically originating from the ischial tuberosity of the pelvis and inserting onto the trochanteric crest of the femur. It lies beneath the gluteus maximus and the other deep muscles of the hip, such as the piriformis and the obturator internus. Its deep-seated position is crucial for its role in stabilizing the hip joint and enabling specific rotational movements. The anatomy of the hip region is complex, and the quadratus femoris is positioned strategically to work alongside other muscles in this area to facilitate a wide range of hip movements.

• The quadratus femoris is one of the six deep external rotators of the hip.
• While primarily responsible for lateral rotation, weakness in this muscle may contribute to issues like hip pain and instability.
• The name 'quadratus femoris' translates to 'square of the femur,' describing its shape and location.
• Athletes who perform repetitive rotational movements often rely heavily on the strength and function of the quadratus femoris.