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Structures surrounding right hip-joint. (Adductor longus at upper right.) In the human body, the adductor longus is a skeletal muscle located in the thigh. One of the adductor muscles of the hip, its main function is to adduct the thigh and it is innervated by the obturator nerve. It forms the medial wall of the femoral triangle.
In 33% of people a supernumerary muscle is found between the adductor brevis and adductor minimus. When present, this muscle originates from the upper part of the inferior ramus of the pubis from where it runs downwards and laterally. In half of cases, it inserts into the anterior surface of the insertion aponeurosis of the adductor minimus.
Many muscles contribute to these movements: 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 femoral triangle is bounded: [2] superiorly (also known as the base) by the inguinal ligament. [2]medially by the medial border of the adductor longus muscle. (Some people consider the femoral triangle to be smaller hence the medial border being at the lateral border of the adductor longus muscle.) [2]
The adductor canal extends from the apex of the femoral triangle to the adductor hiatus. It is an intermuscular cleft situated on the medial aspect of the middle third of the anterior compartment of the thigh, and has the following boundaries: medial wall - sartorius. Posterior wall - adductor longus and adductor magnus. Anterior- vastus medialis.
Sartorius muscle. Muscles of the right leg, viewed from the front. (Rectus femoris removed to reveal the vastus intermedius.) The sartorius muscle (/ sɑːrˈtɔːriəs /) is the longest muscle in the human body. [2] It is a long, thin, superficial muscle that runs down the length of the thigh in the anterior compartment.
Groin. In human anatomy, the groin, also known as the inguinal region or iliac region, [1] is the junctional area between the torso and the thigh. [2] The groin is at the front of the body on either side of the pubic tubercle, where the lower part of the abdominal wall meets the thigh. [3][1] A fold or crease is formed at this junction known as ...
Function. The obturator nerve is responsible for the sensory innervation of the skin of the medial aspect of the thigh. The nerve is also responsible for the motor innervation of the adductor muscles of the lower limb (external obturator, [4] adductor longus, adductor brevis, adductor magnus, gracilis) and the pectineus (inconstant).