Hip and Thigh: Bones and Muscles

Question 1

What is the anatomical definition of the leg?

Answer 1

Leg: between knee and ankle. Whole thing: lower limb.

Question 2

Name the 3 components of the hip bone

Answer 2

Ilium, Ischium, Pubis

Question 3

ASIS/PSIS

Answer 3

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Question 4

AIIS/PIIS

Answer 4

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Question 5

Iliac Fossa

Answer 5

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Question 6

Ischial tuberosity

Answer 6

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Question 7

Greater Sciatic Notch/Lesser Sciatic Notch

Answer 7

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Question 8

Pubis

Answer 8

Pubic body, crest, tubercle. Superior/Inferior Ramus

Question 9

Obturator foramen

Answer 9

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Question 10

Linea Aspera

Answer 10

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Question 11

Acetabulum

Answer 11

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Question 12

Adductor Tubercle

Answer 12

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Question 13

Function of muscles of gluteal region:

Answer 13

Extend, rotate, abduct thigh at hip joint. While walking, they are responsible for holding pelvis level and minimising tilt.

Question 14

Function of the iliopsoas

Answer 14

Major flexors of the thigh at hip joint. Arises from posterior abdo wall

Question 15

Functions of the muscles of the ant/med/post compartments

Answer 15

Ant;: Extension of knee (e.g. iliopsoas/hip flexor). Med: adduction. Post: flexion of knee (and hip).

Question 16

Fascia Lata

Answer 16

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Question 17

Iliotibial tract

Answer 17

Lateral part of the fascia lata.

Question 18

Tensor fascia lata

Answer 18

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Question 19

Function of glut max

Answer 19

Extends at hip joint and laterally rotates. Doesn’t come around far enough to abduct. Involved in flexion/extension of thigh

Question 20

Piriformis

Answer 20

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Question 21

Name the reinforcers of the hip joint

Answer 21

Piriformis, obt int, quad fem

Question 22

Function of Glut med + Glut min

Answer 22

Maintains a horizontal/stable pelvis and prevent tilt during swing phase of walking

Question 23

Function of iliopsoas

Answer 23

Flexes trunk on the fixed thigh (initial phase of walking). Also important postural muslce during standing (maintains normal lumbar lordosis in standing position).

Question 24

Pectineus function

Answer 24

Dual action -> Dual nerve supply.