Scaphoid fracture

Question 1

What is a ‘scaphoid fracture’

Answer 1

1. Most commonly fractured carpal bone 2. 70-80% occur at the waist of the scaphoid bone

Question 2

What is the mechanism of a ‘scaphoid fracture’

Answer 2

1. Dorsiflexion and compression of the radial aspect of the palm - fall outstretched - forced dorsiflexion ie. steering wheel

Question 3

Name 3 clinical finding in a scaphoid fracture?

Answer 3

1. Tenderness over the anatomical snuff box 2. Tenderness over scaphoid tuberacle 3. Pain on longitudinal compression of scaphoid by the thumb

Question 4

Name 2 investigations of scaphoid fracture

Answer 4

1. 2/3 plain x rays 2. MRI

Question 5

mx of scaphoid fracture

Answer 5

1. Consider internal fixation of the fracture is displaced 2. Immobilisation in plaster cast

Question 6

Name 3 complications

Answer 6

1. mal union 2. oeseoarthritis 3. avascular necrosis