ThumbAnchor Spica Orthosis

De Quervain tenosynovitis, basal joint arthritis, and skier's thumb share one requirement: the thumb column has to stop moving while everything else keeps working. The ThumbAnchor extends a standard wrist support with a rigid spica that captures the CMC and MCP joints, leaving the IP joint free for pinch tasks the patient still needs.

Both the palmar stay and the thumb stay are malleable for chairside adjustment, set in a perforated laminate body that tolerates handwashing and desk work. The thumb post is foam-lined where it crosses the first web space — the pressure point that ends most spica compliance — and sizing runs three sizes per side.