De Quervain's Tenosynovitis

De Quervain's tenosynovitis is a painful condition affecting the tendons that control thumb movement. The two tendons (abductor pollicis longus and extensor pollicis brevis) travel through a tunnel on the thumb side of the wrist. When this tunnel becomes inflamed and constricted, it causes pain and swelling at the base of the thumb that worsens with gripping, pinching, or twisting motions.

Often called "mommy thumb" or "gamer's thumb," De Quervain's commonly affects new parents from repetitive lifting, as well as anyone who performs repetitive hand and wrist movements. At Mountain Spine & Orthopedics, our hand specialists provide accurate diagnosis and effective treatment to relieve your pain and restore function.

Common symptoms of De Quervain's tenosynovitis include:

• Pain at the base of the thumb and thumb side of the wrist
• Pain that worsens with gripping, pinching, or twisting motions
• Swelling near the base of the thumb
• A "squeaky" or catching sensation when moving the thumb
• Difficulty moving the thumb and wrist, especially when grasping objects
• Pain that may radiate into the thumb or up the forearm

Risk factors for De Quervain's tenosynovitis include:

• Repetitive hand and wrist motions—particularly gripping combined with wrist deviation
• New parents lifting infants repeatedly
• Gardening, knitting, golf, tennis, and similar hobbies
• Occupations requiring repetitive hand movements
• Female sex—more common in women
• Age 30-50 years
• Pregnancy and postpartum hormonal changes
• Inflammatory arthritis

Diagnosis is primarily clinical. The hallmark test is the Finkelstein test: you make a fist with your thumb tucked inside, then bend your wrist toward your small finger. A positive test reproduces sharp pain along the thumb side of the wrist.

Our specialists examine for swelling, tenderness over the first dorsal compartment, and pain with resisted thumb extension. Ultrasound may be used to visualize tendon thickening and rule out other conditions. X-rays are typically normal but may be ordered to exclude arthritis at the base of the thumb.

Non-Surgical Treatment

Most cases of De Quervain's improve with conservative care:

• Rest and activity modification—avoiding aggravating movements
• Thumb spica splint to immobilize the thumb and wrist
• Ice application and anti-inflammatory medications
• Corticosteroid injection into the tendon sheath—highly effective, with up to 80% success rate

Surgical Options

When conservative treatment fails after several months:

• De Quervain's release surgery opens the tendon compartment to allow free tendon gliding
• This outpatient procedure provides definitive relief with excellent outcomes

Pain from De Quervain's tenosynovitis arises from inflammation and constriction of the tendon sheath. As the tendons swell within the confined tunnel, friction increases with every thumb and wrist movement. This creates a cycle of inflammation that conservative treatment aims to break. Corticosteroid injections directly reduce inflammation within the sheath for rapid relief.

Prevention Tips

• Avoid repetitive thumb and wrist movements when possible
• Take frequent breaks during activities involving gripping
• Use ergonomic tools with larger grips to reduce strain
• Support infants' weight with your palms rather than just your thumbs
• Stretch your thumbs and wrists regularly

Thumb and wrist pain affecting your daily activities? Schedule a consultation with our hand specialists today. We offer same-day and next-day appointments at our FL, NJ, NY, & PA clinics to diagnose your condition and provide effective treatment.