A21 Hindlimb 2

Question 1

Describe the structures of the sacroiliac joint

Answer 1

• Paired - joint between sacral wings & iliac wings
• combined synovial & fibrocartilagenous joint
• pelvic symphysis formed by pubic symphysis & ischia symphysis
• sacratuberous ligament

Question 2

Describe the structure of the hip

Answer 2

• ball (femoral head) & socket (acetabulum) joint
• large range of motion - F, E, A, A, C
• femoral head joined to acetabulum by ligament of femoral head

Question 3

Describe the arrangement of the hip muscles

Answer 3

Gluteal
- superficial gluteal m.
- middle gluteal m.
- deep gluteal m.
- tensor fascia latae

Medial
- gracilis
- pectineus
- Sartorius
- adductor
- external obturator

Deep
- obturator internus m.
- gemelli m.
- quadratus femoris m.
- articularis coxae m.

Caudal
- biceps femoris m.
- semitendinosus m.
- semimembranosus m.

Question 4

Understand the action of the muscles on the hip joint

Answer 4

Gluteal - hip extensors
Medial - adduction of limb
Deep - external rotators of thigh
Caudal - hip extensors