De Quervain's Tenosynovitis

De Quervain's tenosynovitis is a medical condition that affects the tendons on the thumb side of your wrist. It occurs when the tendons around the base of the thumb, specifically the extensor pollicis brevis (EPB) and abductor pollicis longus (APL), become inflamed.

Causes

The exact cause of De Quervain's tenosynovitis is not always known, but it is often associated with repetitive movements or activities that involve the thumb, such as:

• Gripping or grasping
• Twisting or turning
• Lifting or carrying heavy objects
• Repetitive motions, such as those used in jobs or hobbies

Symptoms

The symptoms of De Quervain's tenosynovitis may include:

• Pain or tenderness on the thumb side of the wrist
• Swelling or inflammation in the affected area
• Difficulty moving the thumb or wrist
• A "catching" or "snapping" sensation when moving the thumb
• Pain that worsens with activity and improves with rest

Diagnosis

De Quervain's tenosynovitis is typically diagnosed based on a physical examination and medical history. The Finkelstein test, which involves bending the thumb into the palm and then bending the wrist toward the little finger, can help to diagnose the condition.

Treatment

Treatment for De Quervain's tenosynovitis may include:

• Resting the affected area and avoiding activities that aggravate the condition
• Applying ice or heat to reduce pain and inflammation
• Using a splint or orthotic device to support the wrist and thumb
• Taking anti-inflammatory medications, such as ibuprofen or naproxen
• Receiving corticosteroid injections to reduce inflammation
• Undergoing physical therapy to improve range of motion and strength
• Surgery, in severe cases where other treatments have not been effective

Prevention

To prevent De Quervain's tenosynovitis, it is recommended to:

• Avoid repetitive movements or activities that involve the thumb
• Take regular breaks to rest and stretch the hands and wrists
• Use proper technique when performing activities that involve the thumb
• Wear a splint or orthotic device to support the wrist and thumb, if necessary

Complications

If left untreated, De Quervain's tenosynovitis can lead to complications such as:

• Chronic pain and inflammation
• Decreased range of motion and strength in the thumb and wrist
• Nerve damage or compression
• Tendon rupture or degeneration