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The psoas is the primary hip flexor, assisted by the iliacus. The pectineus, the adductors longus, brevis, and magnus, as well as the tensor fasciae latae are also involved in flexion. The gluteus maximus is the main hip extensor, but the inferior portion of the adductor magnus also plays a role. The adductor group is responsible for hip adduction.
The gluteus maximus straightens the leg at the hip; when the leg is flexed at the hip, the gluteus maximus extends it to bring the leg into a straight line with the body. [3] The anus also aligns when the leg is flexed at the hip, making the muscle tighten and the pelvis tilt forward.
Adductor brevis; Adductor longus; Adductor magnus; Adductor minimus This is often considered to be a part of adductor magnus. pectineus; gracilis; Obturator externus [1] is also part of the medial compartment of thigh; The adductors originate on the pubis and ischium bones and insert mainly on the medial posterior surface of the femur.
The human gluteus maximus plays multiple important functional roles, particularly in running rather than walking. During running, it helps control trunk flexion, aids in decelerating the swing leg, and contributes to hip extension. During level walking, the muscle shows minimal activity, suggesting its enlargement was not primarily adapted for ...
The iliopsoas is the prime mover of hip flexion, and is the strongest of the hip flexors (others are rectus femoris, sartorius, and tensor fasciae latae). [3] The iliopsoas is important for standing, walking, and running. [2] The iliacus and psoas major perform different actions when postural changes occur.
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The pectineus muscle is the most anterior adductor of the hip. The muscle's primary action is hip flexion; it also produces adduction and external rotation of the hip. It can be classified in the medial compartment of thigh [2] (when the function is emphasized) or the anterior compartment of thigh (when the nerve is emphasized). [3]
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