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DeQuervain's Stenosing Tenosynovitis

General Information: DeQuervain’s Stenosing Tenosynovitis

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DeQuervain's stenosing tenosynovitis is an irritation and swelling of the sheath or tunnel which surrounds the thumb tendons as they pass from the wrist to the thumb. Sometimes a lump or thickening can be felt in this area. If the hand is made into a fist with the thumb "tucked in" and bent towards the little finger, the pain gets worse (Finkelstein test).

Tendonitis may be caused by overuse and also can be seen in association with pregnancy or inflammatory arthritis such as rheumatoid disease.

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The irritation causes the compartment (lining) around the tendon to swell, changing the shape of the compartment; this makes it difficult for the tendons to move as they should. The swelling can cause pain and tenderness along the thumb side of the wrist, usually noticed when forming a fist, grasping or gripping things, or turning the wrist.


Signs and symptoms

Pain over the thumb side of the wrist, particularly when grasping or pinching is the most common symptom. The pain may appear either gradually or suddenly. It is felt in the wrist and can travel up the forearm. The pain is usually worse with use of the hand and thumb, especially when forcefully grasping things or twisting the wrist. Swelling over the thumb side of the wrist is noticed and may be accompanied by a fluid-filled cyst in this region. There may be an occasional "catching" or "snapping" when moving the thumb. Because of the pain and swelling, it may be difficult to move the thumb and wrist, such as in pinching. Irritation of the nerve lying on top of the tendon sheath may cause numbness on the back of the thumb and index finger.

Diagnosis

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A Finkelstein test is generally performed. In this test, the patient makes a fist with the fingers over the thumb. The wrist is then bent in the direction of the little finger (Figure 2). This test can be quite painful for the person with deQuervain’s tendinitis. Tenderness directly over the tendons on the thumb side of the wrist is the most common finding, however.

Treatment

The goal is to relieve the pain caused by the irritation and swelling. In some cases, your doctor may recommend resting the thumb and wrist by wearing a splint. Anti-inflammatory medication taken by mouth or injected into that tendon compartment may help reduce the swelling and relieve the pain.dequerfig3.gif In some cases, simply not doing the activities that cause pain and swelling may allow the symptoms to go away on their own. When symptoms are severe or do not improve, surgery may be recommended. The surgery opens the compartment (covering) to make more room for the irritated tendons (Figure 3). Normal use of the hand can usually be resumed once comfort and strength have returned. Your hand surgeon can advise you on the best treatment for your situation.

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