Loco2

Question 1

1. What specific type and class of joint is the hip joint? (1 mark)

Answer 1

Synovial ball and socket

Question 2

1. Why is the femoral nerve not the main concern in this type of injury at the hip? (1 mark)

Answer 2

The femoral nerve is anterior to the hip joint in the femoral triangle and is therefore not compromised by the posterior movement of the femoral head

Question 3

1. What are the respective roles of the medial and lateral collateral ligaments of the knee? (2marks)

Answer 3

Medial prevents opening of the knee on the medial side (1/2) (preventing a valgum deformity) prevents abduction of the knee (1/2)
Lateral prevent knee opening on the lateral side (1/2) (preventing a varum deformity,) prevents adduction of the knee (1/2)

Question 4

1. What is the function of the hamstring group of muscles and what is their nervous supply? (1 mark)

Answer 4

Knee flexion (1/2) and they are innervated by the sciatic nerve (1/2).

Question 5

1. Name three modifications that make the hip joint very stable. (3 marks)

Answer 5

Any three from:

Deep insertion of femoral head in acetabulum (bony restriction)

Acetabular labrum deepens the acetabulum and insertion
Ligaments around the joint blending with joint capsule
Ligament of the head of the femur
Tight joint capsule
Large muscles around the joint
Reciprocal pull of the medial and lateral rotators pulling femoral head into acetabulum