Posterior Thigh--Ach - Sheet1-2

Question 1

These ligaments resist the outward thrust of the sacrum…

Answer 1

Sacrospinous and Sacrotuberous Ligaments

Question 2

Gluteal intramuscular injections should be directed where?

Answer 2

Superolateral Quadrant. Inferior to iliac crest and superior to gluteus maximus

Question 3

Gluteal gait or lurch

Answer 3

Paralysis of G. Maximus due to damage/lesion to inferior gluteal nerve (L5-S2)

Limited hip extension on affected side during mid-stance, compensated for by hyperextension of trunk.

Question 4

Cycling, rowing and other activities that require repetitive hip extension while seated may overwhelm what?

Answer 4

Ischial bursitis–Ischial bursa’s ability to dissapate applied stress is inhibited

Question 5

Deep gluteal pain felt over the lateral buttox, usually due to repetitive action like climbing stairs or running on a steeply elevated treadmill or hills

Answer 5

Trochanteric bursitis

Question 6

Paralyzed gluteus medius and minimus muscles owing to injury of the superior gluteal nerve results in what?

Answer 6

Trendelenburg’s sign or gluteus medius limp.

Hip falls to contralateral side.

Question 7

Piriformis

Answer 7

A lateral rotator, originates on the pelvic surface of the sacrum, the sacrotuberous ligament and the ilium below the PIIS. It leaves the pelvis through the greater sciatic foramen and inserts on the upper border of the greater trochanter.

Question 8

Synopsis of Gluteal Region Neurovasculature

Answer 8

Nerves: Branches of Lumbo-Sacral Plexus

Blood Vessels: Branches of Internal Iliac Artery

**Both exit through the pelvis through the greater sciatic foramen to enter the gluteal region.

Question 9

Innervation of posterior compartment muscles…

Answer 9

Tibial and Fibular Nerves

Hip extensors

Knee flexors

Question 10

Innervation of the anterior thigh compartment muscles…

Answer 10

Femoral Nerve

Hip flexors

Knee extensors

Question 11

Innervation of the medial compartment of the thigh…

Answer 11

Obturator Nerve

Thigh adductors

Question 12

Charley horse

Answer 12

contusion and tearing of muscle fibers enough to result in a thigh hematoma (collection of blood); pain and stiffness.

Question 13

Synopsis of Posterior Compartment of Thigh Neurovasculature

Answer 13

Innervation: Tibial Nerve (division of sciatic nerve)

Exception: Common fibular nerve (Short head of biceps)

Blood Supply: Perforating Branches of deep femoral artery General actions: Extension of the hip joint, flexion of the knee joint