Thumb Spica Splint | Reversible CMC Brace for Arthritis

Thumb pain at the base of the hand turns ordinary jobs into a negotiation: turning a key, opening a jar, buttoning a shirt, holding a phone. This thumb spica splint wraps the thumb column and the wrist in one seamless piece, with two bendable stays running along either side of the thumb. The stays keep the painful CMC joint (the basal joint, where the thumb meets the wrist) from twisting and grinding, while your fingertips and all four fingers stay completely free to pinch, type, and work. Two hook and loop straps do the fitting: one cinches the wrist, the other wraps the thumb, so you can dial in exactly how much support you want and loosen it as a flare settles. The brace is fully reversible, so one splint fits either the left or the right hand, and the knit fabric breathes well enough for all day wear. Choose S/M for a wrist of 5 to 7.5 inches, or L/XL for 7.7 to 8.7 inches, measured around the wrist just below the hand. Bracing here is a first line treatment, not just a comfort measure. In its guide to arthritis of the thumb, the American Academy of Orthopaedic Surgeons notes that a splint supporting the base of the thumb can reduce pain during activity or overnight, alongside activity changes, exercise, and ice. Ideal for thumb CMC and basal joint osteoarthritis, de Quervain's tenosynovitis, trigger thumb, thumb sprains, and the repetitive strain that builds up from phones, gaming, gardening, and lifting a baby. If your pain sits in the wrist and palm instead of the thumb, and your fingers go numb at night, the CockUp Wrist Splint is the better match.