Review ArticleCubital Tunnel Syndrome: Current ConceptsStaples, Jonathan Robert MD; Calfee, Ryan MD, MScAuthor Information From the Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO. Dr. Calfee or an immediate family member serves as a paid consultant to DePuy Synthes; has received research or institutional support from Medartis; and serves as a board member, owner, officer, or committee member of the American Society for Surgery of the Hand. Neither Dr. Staples nor any immediate family member has received anything of value from or has stock or stock options held in a commercial company or institution related directly or indirectly to the subject of this article. Journal of the American Academy of Orthopaedic Surgeons: October 2017 - Volume 25 - Issue 10 - p e215-e224 doi: 10.5435/JAAOS-D-15-00261 Metrics Abstract Cubital tunnel syndrome is the second most common upper extremity compressive neuropathy. In recent years, rates of surgical treatment have increased, and the popularity of in situ decompression has grown. Nonsurgical treatment, aiming to decrease both compression and traction on the ulnar nerve about the elbow, is successful in most patients with mild nerve dysfunction. Recent randomized controlled trials assessing rates of symptom resolution and ultimate success have failed to identify a preferred surgical procedure. Revision cubital tunnel surgery, most often consisting of submuscular transposition, may improve symptoms. However, ulnar nerve recovery after revision cubital tunnel surgery is less consistent than that after primary cubital tunnel surgery. Copyright 2017 by the American Academy of Orthopaedic Surgeons.