ヒト大殿筋の肉眼解剖学的研究

概要

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Using 17 cases of the human glutens maximus from 13 cadavers, we examined their origin, insertion and muscle connections (connections between muscles through muscle fibers, fasciae, tendons or ligaments). In all cases, the muscle arose from the dorsal border of the ileum and the dorsal surface of the sacrum and coccyx. At the levels of the 1st, 2nd and 3rd sacral processes (S1, S2, S3), and the border between the sacrum and coccyx (S-Co), the muscle fibers began 7mm, 2mm, 3mm and 4mm laterally from the mid-line, respectively. The upper two third of the muscle fibers inserted into the iliotibial ligament, and the lower one third, into the tuberositas glutea, respectively. At the origin site, the gluteus maximus made the muscle connections with the gluteus medius, multifidus and the opposite gluteus maximus through fasciae. At the insertion site, the muscle made them with the tensor fasciae latae, short head of the biceps femoris, vastus lateralis, adductor minimus and adductor magnus through ligaments, tendon and fasciae. The results of the present study indicate that the anatomy of the gluteus maximus is not so simple as described in textbooks of anatomy, and also suggest that through these muscle connections, the gluteus maximus might be involved in various motions of the hip joint as well as in stabilization of the knee joint.