• Umasuthan Srikumaran, Benjamin E Stein, Eric W Tan, Michael T Freehill, and John H Wilckens.
• c/o Elaine P. Henze, BJ, ELS, Medical Editor and Director, Editorial Services, Department of Orthopaedic Surgery, The Johns Hopkins University/Johns Hopkins Bayview Medical Center, 4940 Eastern Ave. #A665, Baltimore, MD 21224-2780. E-mail address for E.P. Henze: ehenze1@jhmi.edu.
• J Bone Joint Surg Am. 2013 Dec 18;95(24):e197(1-13).

BackgroundOver the past twenty-five years, peripheral nerve blocks have become increasingly common for the management of perioperative pain of the upper extremity. Several factors have led to increasing acceptance and use of these peripheral nerve blocks, including a greater awareness and measurement of patient pain and a greater emphasis on decreasing the duration of hospital stays and associated costs.MethodsWe present a review of peripheral nerve blocks for procedures involving the upper extremity, including indications, contraindications, anatomy and technique, expected clinical outcomes and the associated levels of evidence, cost-effectiveness, and complications. We reviewed the scientific literature for studies on the effectiveness of peripheral nerve blocks for orthopaedic procedures involving the upper extremity. Particular attention was directed at the most commonly used nerve blocks, the levels of evidence supporting their use, and emerging technologies such as ultrasonographic guidance.ResultsPeripheral nerve blocks for upper-extremity procedures improve postoperative pain control and patient satisfaction, can be administered safely, and have a low complication rate. They are also associated with enhanced participation in postoperative rehabilitation, decreased hospital stays, and decreased costs. There are increasingly higher levels of evidence in the literature to support the use of peripheral nerve blocks in a wide variety of orthopaedic procedures ranging from the shoulder to the hand.ConclusionsThe use of peripheral nerve blocks in upper-extremity surgery is common. To actively participate with the patient and anesthesiologist to ensure the best possible outcomes, the orthopaedic surgeon must be well informed regarding the benefits and limitations of this modality.

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