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There are carpometacarpal (CM) joint, metacarpophalangeal (MCP) joint, proximal and distal interphalangeal joints in the hand. The bony structure includes carpals, metacarpals, and proximal, middle and distal phalanges bones. Each bone, except the carpals, is joined by tendons that flex or extend the joints on the dorsal and palmar surfaces. At the proximal levels, intrinsic muscles of the hand also produce motions to either side.
Common problems | Trigger finger | Boutonniere deformity
Common problems
Finger injuries commonly occur as a result of recreational and occupational accidents. Most of the problems are mallet finger, boutonniere deformity, swan-neck deformity, trigger finger, dislocation of the PIP / DIP joints, and fracture. Common injuries among basketball, baseball or football players are contusion and sprain of the PIP / DIP capsules. Degenerative joint disease or osteoarthritis (OA) and immune system problem (RA) can attack those joints and cause deformity of the hand.

The adjustable finger splint maintain finger into neutral position and suitable support to improve tissue recovery.