The Hip - Muscles

Question 1

Iliacus muscle

Answer 1

Proximal; upper 2/3 of iliac fossa
Distal; lesser trochanter (blends with psoas major tendon)
Action; Flexor of the hip
Inn: Femoral nerve (L02-L03)

Question 2

Psoas

Answer 2

Proximal; transverse processes and bodies of all lumbar vertebrae.
Distal; lesser trochanter
Action; Flexor of the thigh
Inn; Branches from L1-L4

Question 3

Tensor fascia latae

Answer 3

Proximal ; Anterior Superior Iliac Spine
Distal ; iliotibial band
Action ; tenses fascia latae, abductor and internal rotator of thigh.
Inn ; Superior gluteal nerve (L04-S01)

Question 4

Gluteus maximus

Answer 4

posterior iliac crest area to IT tract and gluteal tuberosity
Inn ; inferior gluteal nerve (L5-S2)

Question 5

Piriformis

Answer 5

Proximal ; front of sacrum
Distal ; upper border of greater trochanter
Action ; External rotation, abduction, and extension of the hip joint. Help stabilise the hip
Inn ; sacral plexus L05-S02

Question 6

Inferior gemellus

Answer 6

ischial tuberosity to greater trochanter
Action ; Lateral hip rotator, adduction and extensor of hip joint.
Inn. L05, S01

Question 7

Obturator internus

Answer 7

internal obturator formamen to lesser greater trochanter tobercle
innerv: obturator internus

Question 8

Pectineus

Answer 8

Superior pubic ramus and pubic tubercle > pectineal line and line aspera, just below the minor trochanter.

Question 9

Adductor longus

Answer 9

superior pubic ramus and pubic symphysis > middle third of linea aspera
Inn. obturator nerve (L2-L4)

Question 10

Adductor magnus

Answer 10

ischial tuberosity and inferior pubic ramus > adductor tubercle and linea aspera
Inn. obturator nerve (linea aspera inserting part), and tibial part of sciatic nerve (adductor tubercle inserting part)

Question 11

Adductor minimus

Answer 11

mostly fused with adductor magnus - inferior pubic rams > middle part line aspera
Inn. obturator nerve (L2-L4)

Question 12

Rectus femoris

Answer 12

anterior inferior iliac spine > patella (tibial tuberosity)

Inn. all parts femoral nerve (L2-L4)

Question 13

Vastus lateralis

Answer 13

lateral area of major trochanter, intertrochanteric line, gluteal tuberosity and lateral aspect of the line aspera > like rectus
Inn. all parts femoral nerve (L2-L4)

Question 14

Vastus intermedius

Answer 14

Anterior femur shaft surface > like rectus

Inn. all parts femoral nerve (L2-L4)

Question 15

Vastus medialis

Answer 15

medial aspect of line aspera > like rectus

Inn. all parts femoral nerve (L2-L4)

Question 16

Deep rotator muscles of the hip (in order)

Answer 16

Piriformis
Superior gemellus (inn. inferior gluteal nerve)
Obturator internus (inn. obturator nerve)
Inferior gemellus
Quadratus femoris (inn. inferior gluteal nerve)