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The pectineus muscle (/ p ɛ k ˈ t ɪ n i ə s /, from the Latin word pecten, meaning comb) [1] is a flat, quadrangular muscle, situated at the anterior (front) part of the upper and medial (inner) aspect of the thigh. The pectineus muscle is the most anterior adductor of the hip.
The medial femoral circumflex artery (with its branches) supplies arterial blood to several muscles, including: the adductor muscles of the hip, gracilis muscle, [1] [3] pectineus muscle, [3] and external obturator muscle. [1] It delivers most of the arterial supply to the femoral head and femoral neck via branches - the posterior retinacular ...
The pectineus is the only adductor muscle that is innervated by the femoral nerve. The other adductor muscles are innervated by the obturator nerve [1] with the exception of a small part of the adductor magnus which is innervated by the tibial nerve. [4]
The obturator externus muscle is sometimes considered part of this group, [1] [2] [3] and sometimes excluded. [4] (Spatially, it is in this location, but functionally, it is more similar to the other lateral rotator group muscles). The pectineus is sometimes included in this group, [1] [3] and sometimes excluded.
It connects to the pectineus muscle on its ventral and superior aspects. [1] It connects to the rectus abdominis muscle, and the abdominal internal oblique muscle, of the anterior abdominal wall. [1] The pectineal ligament is usually around 6 cm long in adults. [2] It is close to the major vasculature of the pelvis, including external iliac ...
The pectineal line of the pubis (also pecten pubis) is a ridge on the superior ramus of the pubic bone.It forms part of the pelvic brim.. Lying across from the pectineal line are fibers of the pectineal ligament, and the proximal origin of the pectineus muscle.
Nerve to pectineus - This nerve arises from the femoral nerve just above the inguinal ligament. It passes behind the femoral sheath to reach the anterior surface of the pectineus muscle. [2] Femoral sheath encloses the upper 4 cm of the femoral vessels. Its contents are shown below (from lateral to medial):
The nerve to the pectineus muscle arises immediately above the inguinal ligament from the medial side of the femoral nerve, and passes behind the femoral sheath to enter the anterior surface of the muscle. [1] Anterior division supplies the sartorius muscle [1]