1. Thumb Injuries Joints Metacarpophalangeal Joint Interphalangeal Joint
Thumb (IP)

2. Pinch
Thenar Eminence
Opposition
Abduction/Adduction
Flexion/Extension

3. Thumb Ulnar Collateral Ligament Sprain Gamekeeper’sThumb
Normal abduction
Etiology
Sprain of UCL
Forceful abduction
Occasionally combined w/ hyperextension
Normal abduction with stress
Abnormal abduction with stress

4. Gamekeeper’s Thumb Management Signs and Symptoms Immediate follow-up
If instability exists
Referral to orthopedist
X-ray to rule out fracture
If stable splint
3 weeks or until pain free
Extend from wrist to end of thumb
Neutral position
Thumb spica after splinting
Signs and Symptoms
Pain over UCL
Instability with radial deviation
Weak pinch
Painful pinch

5. Thumb Dislocation Bennett’s Fracture
Structurally unstable
Should never be reduced without x-ray
Must be referred to an orthopedic surgeon