Final answer:
The splint used for De Quervain tenosynovitis is called a thumb spica splint. It immobilizes the thumb and wrist, allowing the inflamed tendons to rest and heal. It provides support and stability, reducing pain and inflammation.
Step-by-step explanation:
The splint used for De Quervain tenosynovitis is called a thumb spica splint. This splint immobilizes the thumb and wrist, allowing the inflamed tendons to rest and heal. It consists of a splint that extends from the thumb to the forearm, with the thumb positioned in a slightly bent and abducted position.
The thumb spica splint can be made from various materials such as thermoplastic or neoprene, and is typically secured with hook and loop straps. The splint provides support and stability, reducing pain and inflammation associated with De Quervain tenosynovitis.