Medically reviewed by Theresa Marko, PT, DPT, MS Ulnar nerve entrapment occurs when there is too much pressure on the ulnar nerve. This leads to hand numbness or tingling in the forearm and pinky side ...

When the elbow is constantly bent at over a 90-degree angle, the ulnar nerve can become squished and ... could include an electromyography (EMG) and nerve conduction study. These tests will help ...