Gamekeeper's thumb.
Injuries to the ulnar collateral ligament of the thumb metacarpophalangeal joint can result in significant pain and instability. Patients with this injury have severe difficulties with pinching and grasping objects. Avulsions of this collateral ligament from the proximal phalanx and midsubstance tears provide the usual mechanisms of injury. Complete ruptures usually require surgical treatment. Cast immobilization is usually satisfactory for partial tears.
Adolescent↗