SCAPHO-LUNATE DISSOCIATION

Question 1

Mechanism

Answer 1

FOOSH

Question 2

Physical Exam

Answer 2

Pain over S-L ligament dorsally
(just distal to Lister’s tubercle)
Pain in anatomic snuffbox

Question 3

X-RAY

Answer 3

3V Wrist + Clenched Fist View
Widening of scapho-lunate distance
Gr I - nil
Gr II - open w/ clenched fist
Gr III wide at rest > 3 mm ‘Terry Thomas Sign’

Question 4

Management

Answer 4

Thumb Spica Splint
Follow up with hand in 1 - 2 weeks