Joint Protection Strategies for Thumb CMC Arthritis

This handout was created for OT Potential Club members in collaboration with Corrina Holcomb, OTS, as the patient education piece for thumb CMC arthritis. Conservative care for this diagnosis leans heavily on changing how a person loads the joint during daily tasks — which means much of the work happens between sessions, at home, without the therapist there. A printed reference gives clients something concrete to take with them after that conversation.

Most likely to be used in outpatient hand therapy and private practice, with adults and older adults. It also travels well to home health, where the strategies can be tried out in the client's own kitchen.

Best used early in the episode of care, right after the evaluation identifies which tasks provoke pain. Walk through the relevant sections in session, then send it home as part of the education piece of a home program. It pairs naturally with a thumb orthosis and any strengthening or stabilization work — the handout covers the habit side, not the exercise side. Revisit it at follow-up to see which strategies stuck and which need adapting. Note that one bullet explicitly invites the client to problem-solve high-demand tasks with their therapist, so plan for that to come back as a conversation.

The strategies in the handout are drawn from two sources in the hand therapy literature: Beasley (2012), a review of conservative management for osteoarthritis and rheumatoid arthritis in the Journal of Hand Therapy, and O'Brien, Johnson, Pisano, and Enke (2022), a synthesis on dynamic stabilization of the painful thumb, also in the Journal of Hand Therapy. The three organizing principles — joint positioning, reducing force, and using larger joints — come from the first; most of the specific task examples come from the second.

Before handing it over, skim it for the two or three examples that match the client's actual routine and mark them. Three strategies with a dozen sub-bullets is a lot to absorb at once, and a client who tries to change everything usually changes nothing.

The "O" shape pinch on page 1 is worth practicing in session rather than describing. Hand the client something they pinch often — a pill bottle, a key, a zipper pull — and have them feel the difference between a stable O and a collapsed thumb. That single demonstration tends to do more than the rest of the page.

A few notes on specific content: the phone-holding tip is often the easiest sell, since most clients notice the pain there first. Voice dictation is mentioned as an alternative, so it helps to know whether the client can set that up or needs a hand doing it. And "ask for help when available" can land poorly with clients who are protective of their independence — framing it as choosing where to spend limited pinch capacity usually goes over better than framing it as needing help.