Answer:
When working with a client with radial nerve palsy, the appropriate orthotic design to improve function often involves:
A. Forearm-based radial thumb spica that supports the lateral aspect of the wrist and hand.
This type of orthotic design can help provide support and stability to the wrist and thumb, which is essential for individuals with radial nerve palsy. It can assist in maintaining proper alignment and function of the wrist and thumb, improving the client's overall hand and wrist function. The orthosis supports the lateral aspect of the wrist and hand, which is typically affected in radial nerve palsy, allowing for improved function and mobility.