<prompt> Game keepers thumb is ?Thumb metacarpophalangeal joint ulnar collateral ligament ruptureThumb metacarpophalangeal joint radial collateral ligament ruptureThumb interphalangeal joint ulnar collateral ligament ruptureThumb interphalangeal joint radial collateral ligament rupture  <response>: Ans. is a i.e., Thumb metacarpophalangeal joint ulnar collateral ligament rupture Injury to the thumb metacarpophalangeal joint ulnar collateral ligament is commonly referred to as gamekeeper thumb or skiers thumb, although the original gamekeeper description Campbell, 1955 referred to an attritional ulnar collat- eral ligament injury. Snow skiing accidents and falls on an outstretched hand with forceful radial and palmar abduction of the thumb are the usual causes. 