Functional wrist extension splint
![](https://blog.orfit.com/app/uploads/9D-functional-wrist-extension-splint-e1479113075795-600x0-c-default.jpg)
Paralysis of the wrist extensors (radial nerve palsy).
Tip: this splint is available as a kit.
![](https://blog.orfit.com/app/uploads/9D-step-1-600x0-c-default.jpg)
![](https://blog.orfit.com/app/uploads/9D-step-2-600x0-c-default.jpg)
Mark the flexion-extension axis of the wrist.
Successively mould pattern A in the palm of the hand and pattern B on the forearm.
![](https://blog.orfit.com/app/uploads/9D-step-3-600x0-c-default.jpg)
![](https://blog.orfit.com/app/uploads/9D-step-4-600x0-c-default.jpg)
Position pattern B exactly as shown on the drawing and attach a broad Velcro band proximally on the forearm section.
Mark the place of the spring as it is aligned with the flexion-extension axis.
![](https://blog.orfit.com/app/uploads/9D-step-5-600x0-c-default.jpg)
![](https://blog.orfit.com/app/uploads/9D-step-6-600x0-c-default.jpg)
Remove the splint from the patient. Heat the curved end of the spring and melt into the splint material.
Secure the fixation with a thermoplastic coin dry heated and stuck over it. Fit the second spring in the same way, ensuring that both are perfectly aligned.
![](https://blog.orfit.com/app/uploads/9D-step-7-600x0-c-default.jpg)
![](https://blog.orfit.com/app/uploads/9D-step-8-600x0-c-default.jpg)
Place the splint back on the patient. The patient holds the volar piece of the splint in a fist whilst resting the hand on the table. Push the free arm of the spring downwards until parallel to the metacarpal. Measure the distance and bend the spring arm 90° downwards and further into a U-shape. Cut off the excess material. Mark the position of the U-shape on the side of the splint.
Remove the splint from the patient. Heat the U-shape and melt it into the plastic. Secure with a thermoplastic coin. Proceed in exactly the same way on the ulnar side.
Finishing and fixation straps:
- Apply soft padding material at the level of the wrist.
- One strap already provided proximally.
- Optionally, a narrow strap crossing the wrist and one over the back of the hand for greater comfort.