A football player is tackling the ball carrier and his thumb gets caught in the jersey as he drags the call carrier to the ground. The athlete felt a “pop” and he is unable to grip with his hand. This could be a simple thumb metacarpal-phalangeal sprain (M-P) commonly known as “game-keeper’s thumb” or an avulsion fracture of the ligament.
If the M-P joint is dislocated, qualified medical care professionals can attempt on-site relocation. If repeated attempts to relocate the thumb are unsuccessful, the injury may require surgery. This is referred to as a Stenner lesion or “key-hole” injury.