De Quervain’s tenosynovitis causes pain and tenderness at the side of the wrist beneath the base of the thumb as it is an inflammation of the tendon its sheath. Sometimes there is slight swelling and redness in the area. This is mainly due to overuse (Goel and Abzug, 2015).
De Quervain’s tenosynovitis mainly impacts the abductor pollicis longus and extensor pollicis brevis tendons (Goel and Abzug, 2015).
This painful tenosynovitis is primarily due to repetitive rubbing of the abductor pollicis longus and brevis tendons, caused by a thickened and swollen retinaculum (Goel and Abzug, 2015).
Treatments for De Quervain’s tenosynovitis includes any combination of rest, splinting, ice, anti inflammatory medication, and occasionally cortisone injection. Depending on the symptoms shown conservative management is based on severity of the condition. If symptoms persist despite a trial of conservative treatment, surgery is the next step, followed by special splinting and movement modification and strengthening (Goel and Abzug, 2015).
Goel R. and Abzug J.M., 2015, De Quervain’s tenosynovitis: a review of rehabilitation options, Hand: official journal of American Association for Hand Surgery, 10(1), pp: 1-5