Anatomy MSK

Question 1

Definition of a hip fracture?

Answer 1

any fracture of the femur distal to the femoral head and 5cm below the lesser trochanter

Question 2

What are the primary blood supplies to the femoral neck?

Answer 2

Medial and lateral circumflex arteries

Question 3

Why does leg shortening and external rotation occur in a neck of femur fracture?

Answer 3

Unopposed action of psoas - psoas pulls the leg upwards and externally rotates it; unopposed iliopsoas action causes shortening and external rotation

Question 4

What does superior gluteal nerve damage cause?

Answer 4

Weak abduction and Trendelenburg gait

Question 5

What does obturator nerve damage cause?

Answer 5

middle thigh paresthesia, groin pain and/or adduction weakness

Question 6

What does peroneal nerve/sciatic nerve damage cause?

Answer 6

Foot drop, buttock pain down posterior thigh, paresthesia