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Gandbhir and Rayi point out that the biomechanical action involved comprises a class 3 lever, where the lower limb's weight is the load, the hip joint is the fulcrum, and the lateral glutei, which attach to the antero-lateral surface of the greater trochanter of the femur, provide the effort.
The upper fibers act as abductors of the hip joints. The gluteus maximus is a tensor of the fascia lata , and by its connection with the iliotibial band steadies the femur on the articular surfaces of the tibia during standing, when the extensor muscles are relaxed.
This lateral rotation may be initiated in conjunction with hip abduction and medial rotation of the femur while kicking a soccer ball. The tensor fasciae latae works in synergy with the gluteus medius and gluteus minimus muscles to abduct and medially rotate the femur. The TFL is a hip abductor muscle.
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Most of the muscle inserts behind the centre of rotation of the hip. However, its function changes in different positions of the femur. For example: If the leg is flexed, the whole muscle will flex. [5] The posterior fibres of gluteus medius contract to produce hip extension, lateral rotation and abduction.
Stretching the hip into extension and limiting excessive knee flexion avoids placing the rectus femoris in a position of passive insufficiency, thereby maximizing the stretch to the iliopsoas tendon. Strengthening exercises for the hip flexors may also be an appropriate component of the program.
The adductor muscles of the hip are a group of muscles in the medial compartment of the thigh mostly used for bringing the thighs together (called adduction). Structure [ edit ]
The lateral rotator group is a group of six small muscles of the hip which all externally (laterally) rotate the femur in the hip joint.It consists of the following muscles: piriformis, gemellus superior, obturator internus, gemellus inferior, quadratus femoris and the obturator externus.