Innovative Ultrasound-Guided Hydrodissection Provides Effective Relief for Carpal Tunnel Syndrome

A recent study published in Radiology highlights the potential of a minimally invasive ultrasound-guided technique, known as nerve hydrodissection, in providing long-term relief for patients suffering from carpal tunnel syndrome. Conducted by Dr. Anupama Tandon and Dr. Anindita Bose in India, the research demonstrates this method's advantages over traditional corticosteroid injections, which often yield only short-term relief and may have side effects.

Carpal tunnel syndrome, characterized by numbness, tingling, and pain due to repetitive wrist and hand movements, affects 5% to 10% of the population. Historically, corticosteroid injections have been utilized to alleviate symptoms by reducing swelling around the nerve. However, they can lead to localized skin changes and require repeated administration.

In the study, 63 patients with confirmed carpal tunnel syndrome unresponsive to conventional therapies were randomly divided into three groups for treatment. Two groups received ultrasound-guided hydrodissection of the median nerve—one with normal saline alone and the other with a combination of saline and corticosteroid—while the third group received an ultrasound-guided corticosteroid injection alone.

The clinical evaluation of these patients using standardized symptom, functional, and pain scores, alongside ultrasound assessment of the median nerve area, revealed sustained benefits of hydrodissection over time. Both hydrodissection groups showed significant improvement in clinical symptoms and nerve size reduction at 12 weeks and six months, whereas the corticosteroid-only group experienced a recurrence of symptoms.

Dr. Tandon noted, "At 12 weeks and 6 months, both hydrodissection groups demonstrated further improvement in clinical symptoms and function, whereas patients who received corticosteroid injection alone experienced a recurrence of the symptoms." The addition of corticosteroids to the hydrodissection did not provide a significant long-term advantage, with saline alone proving sufficient.

The procedure, which was well-tolerated and quick, required no anesthesia and allowed patients to return to daily activities shortly after treatment. Given its low cost and minimal side effects, hydrodissection may offer a viable alternative to surgery for mild to moderate cases of carpal tunnel syndrome.

The study's promising results suggest that ultrasound-guided saline hydrodissection could play an increasingly important role as a treatment option for carpal tunnel syndrome, warranting further multicenter studies to confirm its long-term effectiveness across diverse patient populations.