Cubital tunnel syndrome, similar to carpal tunnel syndrome, is caused by compression of a nerve. In cubital tunnel the ulnar nerve is pressed upon by structures in the elbow, causing numbness and/or tingling typically in the ring and small fingers. The surgery involves making an incision on the inside of the elbow and releasing the structures pressing upon the nerve, so that the nerve can "breathe" easier and cause relief of symptoms. This procedure may also be done endoscopically through a minimally invasive approach.