Short thumb opponens orthosis: A whale of a design

"The unique design of this thumb orthosis may facilitate fabrication by allowing the therapist to visualize the where the "Whale's" parts correspond to the client's hand"Kristin ValdesOTD, OT, CHT, Practice Forum Editor Introduction Passive limitation of the metacarpophalangeal (MCP) joint and trapeziometacarpal joint range of motion1 can be a common indication not only for thumb osteoarthritis2 when there may be associated hyperextension of the MCP joint but also for other issues including thumb ligament injuries.3 A custom thumb orthosis is a recommended intervention to promote both the recovery of damaged tissue without losing functionality and to facilitate thumb opposition during everyday activities.4 This design offers clients support with minimal material placed over the dorsal hand and therefore may be an appropriate option for clients who dislike or cannot tolerate the thermoplastic material placed dorsally.