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The inferior gluteal nerve is the main motor neuron that innervates the gluteus maximus muscle. It is responsible for the movement of the gluteus maximus in activities requiring the hip to extend the thigh, such as climbing stairs.
The gemelli muscles act to compensate the reduced power of the internal obturator as it turns around the lesser sciatic notch. [1] Blood supply is from the inferior gluteal artery. Nerve supply is from the supply to the quadratus femoris – L4 to S1. [2]
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.
The superior gluteal nerve is a mixed (motor and sensory) nerve of the sacral plexus that originates in the pelvis. It provides motor innervation to the gluteus medius , gluteus minimus , tensor fasciae latae , and piriformis muscles; it also has a cutaneous branch.
Superior and inferior gluteal arteries: Nerve: Inferior gluteal nerve (L5, S1 and S2 nerve roots) Actions: External rotation and extension of the hip joint, supports the extended knee through the iliotibial tract, chief antigravity muscle in sitting and abduction of the hip: Antagonist: Iliacus, psoas major and psoas minor: Identifiers; Latin ...
Nerves of the sacral plexus [2] Nerve Segment Innervated muscles Cutaneous branches Superior gluteal: L4-S1 Gluteus medius Gluteus minimus Tensor fasciae latae: Inferior gluteal: L5-S2 Gluteus maximus: Posterior cutaneous femoral. Inferior cluneal nerves; Perineal branches; S1-S3 Perforating cutaneous: S2-S3 Direct branches from plexus ...
The hamstrings are innervated by the sciatic nerve, specifically by a main branch of it: the tibial nerve. (The short head of the biceps femoris is innervated by the common fibular nerve). The sciatic nerve runs along the longitudinal axis of the compartment, giving the cited terminal branches close to the superior angle of the popliteal fossa.
The nerves of the sacral plexus pass behind the hip joint to innervate the posterior part of the thigh, most of the lower leg, and the foot. [46] The superior (L4-S1) and inferior gluteal nerves (L5-S2) innervate the gluteus muscles and the tensor fasciae latae.