The intent is to serve as an update of the hand surgery literature for the practicing general orthopaedic surgeon.
Carpal Tunnel SyndromeCarpal tunnel syndrome is one of the most common disorders in hand surgery. Nevertheless, the optimum method for diagnosis remains controversial. A growing body of evidence suggests that electrodiagnostic studies [1][2][3][4] are not more sensitive and specific than diagnosis by ultrasound or clinical history and examination. D'Auria et al. 5 examined the role of electrodiagnostic studies compared with clinical judgment and found that the utility of electrodiagnostic studies may be greatest in patients for whom a diagnosis of carpal tunnel syndrome is questionable. Even so, electrodiagnostic studies are performed in many patients with carpal tunnel syndrome 6 . Less expensive, office-based diagnostic tools such as the Carpal Tunnel Syndrome 6 (CTS-6), a 26-point scale that incorporates aspects of the history and clinical examination to predict the probability of carpal tunnel syndrome, and ultrasound will likely supplant the routine use of electrodiagnostic studies for carpal tunnel syndrome.Strong evidence exists for the use of night splints and corticosteroid injections for early treatment of carpal tunnel syndrome. In a comparison of the 2 treatments, 100 patients with a diagnosis of carpal tunnel syndrome were randomized to a night splint or a corticosteroid injection 7 . In the 95 patients who completed follow-up, corticosteroid injections were superior in terms of nocturnal paresthesias, pain, and Boston Carpal Tunnel Questionnaire (BCTQ) function and symptom domains at 1, 3, and 6 months.A novel study on hand function with decreased sensation showed that a digital nerve block to the thumb had the greatest negative impact on dexterity and a loss of sensation in the index and long fingers caused decreased grip and chuck pinch strength, thus explaining the common symptoms of decreased dexterity and strength in patients with carpal tunnel syndrome 8 .Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJS/G899).