GLUTEAL COMPLEX. Bony Landmarks. Ligaments of articulated pelvis: Obturator membrane. Sacrotuberous: Posterior iliac spine, lower sacrum, coccyx to ischial tuberosity. Sacrospinous: Sacrum, coccyx to ischial spine. Greater sciatic foramen. Lesser sciatic foramen.
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Posterior iliac spine, lower sacrum, coccyx to ischial tuberosity.
Sacrum, coccyx to ischial spine.
Greater sciatic foramen.
Lesser sciatic foramen.
Superior/inferior gluteal vessels and nerves.
Internal pudendal artery/vein.
Posterior femoral cutaneous nerve.
Nerves to quadratus femoris and obturator internus.
Tendon of obturator internus.
Nerve to obturator internus.
Internal pudendal vessels.
Posterior rami of L1-3, S1-3.
Iliohypogastric nerve (L1)
Anterior rami T12.
Branches from posterior femoral nerves
Branches from lateral femoral cutaneous nerve (S2-3).
Inferior gluteal nerve (L5, S1-2).
Inferior gluteal artery:
From internal iliac.
Hip extension and lateral rotation.
Rising, climbing, running (but not walking).
Medius and minimus are the same muscle separated by the superior gluteal nerve.
Tensor fascia latae:
Inserts onto iliotibial tract.
Superior gluteal nerve.
Superior gluteal artery:
From internal iliac.
Hip abduction with a free-swinging limb.
Evaluates strength of contralateral gluteus medius.
Patient stands upright and raises one foot off the ground.
Contralateral gluteus medius should lower contralateral hip and raise ipsilateral hip.
Needed to clear foot from the ground during swing phase of walking.
Leaves pelvis through greater sciatic foramen.
(Main door for passage of structures from pelvis to thigh.)
Arises from common iliac artery.
Branches from femoral artery:
Medial femoral circumflex artery:
Ascending branch anastomoses with inferior gluteal artery.
Lateral femoral circumflex artery:
Ascending branch anastomoses with superior gluteal artery.