De Quervain's tenosynovitis, also known as de Quervain's tendinitis, is a condition that affects the tendons on the thumb side of the wrist, causing pain and swelling. It is commonly caused by overuse or repetitive motions, but may also occur for unknown reasons. Symptoms include radial-sided wrist pain with or without inflammation at the base of the thumb, pain with thumb abduction or flexion, inflammation over the thumb side of the wrist, a snapping or catching sensation when moving the thumb, and numbness of the back of the thumb that may spread to the index finger.
Treatment of de Quervain's tenosynovitis typically involves physical and occupational therapy, including nonsteroidal agents, cryotherapy, and topical corticosteroids mediated with ultrasound and iontophoresis. Splinting is also a first-line conservative treatment for de Quervain's tenosynovitis and may involve soft flexible splints for mild or occasional symptoms, moderately restrictive splints for more severe and persistent symptoms, and firm supports that restrict motion for those with more severe, long-standing pain.
There are several types of splinting available, including the 3pp Ez Fit Thumb Spica Splint, designed to gently immobilize and protect the thumb and wrist, and the Cock-Up Wrist &Thumb Splint, which offers targeted immobilization and protection. Other splints may be more flexible or allow for customization to meet individual needs.
When choosing a splint for de Quervain's tenosynovitis, it is important to consider the severity and longevity of the symptoms, the amount of support needed, and the specific design features, such as whether the splint is adjustable or has a full length aluminum stay, open palm design, or removable aluminum stays. It is also important to follow the manufacturer's instructions for donning and wearing the splint and to consult with a medical professional for personalized treatment plans.
