Gluteal Region and Posterior Thigh Flashcards
Walking pattern caused by unilateral weakness of the hip abductors, mostly the gluteal musculature
Trendelenburg gait
Nerve damage that could cause Trendelenburg gait
Superior gluteal nerve or 5th lumbar spine lesion
Syndrome that involves variants of the sciatic nerve, such as the premature separation of sciatic nerve branches
Piriformis syndrome
Hamstring muscles
Semitendinosus, Semimembranosus, Biceps femoris long head
3 common features of hamstring muscles
- Proximal attachment to ischial tuberosity deep to gluteal maximus muscle
- Distal attachment to the bones of the legs (span two joints, provide extension at hip joint and flexion at knee joint)
- Innervation by the tibial division of the sciatic nerve
Nerves that emerge inferior to the piriformis muscle (5)
Pudendeal nerve, Nerve to obturator internus, posterior cutaneous nerve of the thigh, Sciatic nerve, and inferior gluteal nerve
nerve that emerges superior to the piriformis muscle
Superior gluteal nerve
Nerve that is a dorsal division of the sacral plexus, L4, L5, S1
Superior gluteal nerve
Nerve that is a dorsal division of the sacral plexus, L5, S1, S2
Inferior gluteal nerve
Superior, middle, and inferior cutaneous nerves that supply the skin of the gluteal region; are small branches of the posterior rami of sacral nerves
Cluneal nerves
Terminal division of the femoral nerve in the lower leg
Saphenous nerve
Nerve that is a ventral division of the sacral plexus; L4, L5, S1
Nerve to quadratus femoris
Nerve that is a ventral division of the sacral plexus; L5, S1, S2
Nerve to obturator internus
Nerve that is a ventral division of the sacral plexus; S2, S3, S4
Pudendel nerve
Nerve that supplies the external anal sphincter and structures in the perineum
Pudendal nerve
Nerve that is made up of dorsal and ventral divisions of the sacral plexus; L4, L5, S1, S2, S3
Sciatic nerve
Nerve that is made up of dorsal and ventral divisions of the sacral plexus; S1, S2, S3
Posterior cutaneous nerve of the thigh
Branches of the posterior cutaneous nerve of the thigh
Perineal branch and gluteal branches
The perineal branch of the posterior cutaneous nerve of the thigh innervates this
Sensation to the perineum
The gluteal branches of the posterior cutaneous nerve of the thigh supply this region
Posteroinferior quadrant of skin of gluteal region
Artery that enters the gluteal region through the greater sciatic foramen superior to piriformis.
Divides into superficial and deep branches
Superior gluteal artery
Artery that enters the gluteal region through the greater sciatic foramen inferior to piriformis. Descends on the medial side of the sciatic nerve and participates in the cruciate anastomosis of the thigh
Inferior gluteal artery
Artery that enters the gluteal region through the greater sciatic foramen; descends posterior to the ischial spine and enters the perineum through lesser sciatic foramen.
Internal pudendal artery
The perforating arteries of the thigh enter the posterior compartment by perforating the aponeurotic portion of these structures
Adductor magnus muscle and medial intermuscular septum