Arthritis at the base of the thumb (formerly known as CMC Arthritis -now commonly referred to as trapeziometacarpal or TMC Arthrosis) is a common problem. In fact, TMC arthrosis has been found to be symptomatic in 26.2% of women and 13.2% of men age 71-100.
The symptoms of TMC arthrosis can negatively impact both functional and occupational performance, often making it necessary for the involvement of physical and occupational therapists. Recent surveys suggest that 87% of therapists recommend a splint to treat moderate TMC arthrosis and research literature suggests evidence to support use of a splint to decrease pain and improve function.
There have been numerous clinical studies on using a splint to treat TMC Arthrosis, but there is no evidence that shows one splint is better than another. Research evidence does suggest some clinical recommendations:
The 3pp ThumSling supports the CMC joint and applies light compression to help reduce the slippage and grinding on the joint.
The 3pp Prima Thumb Brace provides optimal support and a conforming fit around the thumb and palm so fingers are free for unimpeded function
For firmer support and rest of more involved joints, the ThumSaver MP and the Fix Comfort Thumb Brace are designed to protect but still allow function.
For more information on TMC arthrosis and the use of an orthosis: