Displacement of the carpometacarpal bone; specifically disturbance or disarrangement of the normal relation of the bones entering into the formation of a joint.
Symptoms:
Pain in the thumb
Swelling in the thumb
Loss of ROM in the thumb
Instability in the thumb
Physical deformity- thumb not in correct alignment
Causes:
Common in collision sports
Impact of the thumb against an object, person, ball, or piece of equipment
