De Quervain's Tenosynovitis

What Is De Quervain's Tenosynovitis?

De Quervain's tenosynovitis is a painful condition affecting two tendons that run along the thumb side of your wrist. These tendons, which you can see on the back of your hand when you extend your thumb, pass through a narrow tunnel called the first extensor compartment. They control thumb movement, particularly the motions involved in grasping and lifting.

The condition develops when the tunnel becomes too narrow or the tendons swell and take up extra space within the tunnel. This can happen if the soft tissues that form the tunnel walls thicken, or if the lining around the tendons becomes inflamed and swollen. When the tendons can't glide smoothly through the tunnel, moving your thumb or wrist causes pain and discomfort.

Activities that involve forceful grasping, pinching, or twisting motions tend to aggravate the condition. Even simple tasks like turning a doorknob, lifting a child, or wringing out a towel can become painful.

Symptoms

The primary symptom is pain and tenderness on the thumb side of the wrist, right where the base of the thumb meets the forearm. The pain can be sharp or dull and is often worse with thumb and wrist movement. You may notice swelling or a feeling of thickness in this area.

Pain typically worsens with activities that involve gripping, pinching, or twisting, such as opening jars, using scissors, or lifting objects. A classic sign is pain when you make a fist with your thumb tucked inside and then bend your wrist toward your pinky finger. This maneuver, called the Finkelstein test, is often used during diagnosis because it reproduces the pain characteristic of De Quervain's.

Some people notice a catching or snapping sensation when moving the thumb. The pain can radiate up the forearm or down into the thumb, and it may be worse at the end of the day after repetitive use.

Causes & Risk Factors

The exact cause of De Quervain's tenosynovitis is not always clear, but it's believed to result from irritation or inflammation of the tendons due to repetitive thumb and wrist motion. Activities that require repeated grasping, pinching, or twisting can contribute to the condition.

The condition is particularly common in new mothers, typically appearing four to six weeks after delivery. The combination of hormonal changes, fluid retention, and repetitive lifting and holding of a baby creates a perfect storm for tendon inflammation. Hormonal changes during pregnancy and breastfeeding may also play a role.

Other risk factors include activities or jobs that involve repetitive hand and wrist motions, such as gardening, playing certain musical instruments, or assembly line work. Inflammatory conditions like rheumatoid arthritis can also increase your risk. The condition can affect people of all ages, though it's most common in women between 30 and 50.

Diagnosis

Diagnosis is based on your symptoms and a physical exam. Your hand surgeon will ask about when the pain started, what makes it better or worse, and whether you've noticed any swelling. During the exam, the surgeon will press on the affected area to check for tenderness and may perform the Finkelstein test, which involves tucking your thumb into your palm and bending your wrist downward. Pain with this maneuver is characteristic of De Quervain's.

Imaging tests are rarely needed. The diagnosis is typically straightforward based on the location of the pain and the findings on physical exam.

Treatment Options

The goal of treatment is to reduce inflammation, relieve pain, and allow the tendons to glide smoothly again. Many cases of De Quervain's tenosynovitis respond well to non-surgical treatment, especially when caught early.

A thumb spica splint, which immobilizes both the thumb and wrist, can help by reducing movement and giving the tendons a chance to heal. Splinting is often most effective when combined with activity modification. Anti-inflammatory medications like ibuprofen can reduce pain and swelling.

A corticosteroid injection into the tendon compartment is often very effective. The injection reduces inflammation and allows the tendons to move more freely. Many people experience significant, lasting relief from a single injection. If symptoms return, a second injection may be tried, though repeated injections are less effective over time.

If non-surgical treatments don't provide relief, surgery may be recommended. The procedure involves opening the tunnel to create more space for the tendons. It's a minor outpatient surgery with a high success rate.

Surgery: What to Expect

Surgery for De Quervain's tenosynovitis is performed as an outpatient procedure under local anesthesia, with sedation available for select cases if needed. A small incision is made over the affected area on the thumb side of the wrist. The tight tunnel is opened, releasing pressure on the tendons and allowing them to glide freely.

The procedure takes about 15 to 20 minutes. Once the tunnel is released, pain relief is often immediate, though it may take a few weeks for swelling and soreness to fully resolve. You'll go home the same day with a soft dressing on your hand.

Recovery

After surgery, you'll be encouraged to move your thumb and wrist gently to prevent stiffness. You'll receive a home exercise program that includes range of motion exercises and scar massage techniques. Most people can manage their recovery well with these home exercises, though formal hand therapy is available if needed.

Most people can return to light activities within a few days and resume normal activities within a few weeks. Full recovery, including resolution of tenderness and return of full strength, typically takes six to twelve weeks. Complications are rare, and the vast majority of people experience complete relief of pain after surgery.

When to See a Specialist

If you're experiencing pain on the thumb side of your wrist that's affecting your ability to grip, lift, or use your hand, it's worth getting evaluated. Early treatment is more effective and can help you avoid prolonged discomfort. This is especially important for new mothers who are experiencing thumb and wrist pain, as De Quervain's is common in the postpartum period.

Dr. Lackey specializes in diagnosing and treating De Quervain's tenosynovitis and can help you find the most effective treatment for your situation.