Ulnar nerve is often trapped in cubital tunnel at elbow level, this being the second most common place of entrapment of the peripheral nerves in the upper limb.3 The most commonly associated etiology is the anatomic alteration of the cubital tunnel.12 There are three mechanisms described: compression, traction, and friction. The symptoms exhibited are hypoesthesia, pain, and weakness, which increase with the bending of the elbow at an angle greater than 90°, and according to nerve involvement we can classify the clinical status using the modified McGowan score.