Ulnar nerve irritation Ultrasound of the elbow and forearm demonstrates a normal course, size and echogenicity of the ulnar nerve. There is a small amount of hypoechogenicity and hypervascularity anterior to the ulnar nerve near its course within the cubital tunnel which is thought to represent a small amount of postsurgical scarring and inflammation. Following flexion and extension, the ulnar nerve remains within the tunnel and there is no evidence of subluxation.Evaluation of the common flexor tendon demonstrates normal echogenicity. The anterior band of the ulnar collateral ligament also is unremarkable.
Essentially normal course and appearance of the ulnar nerve with no evidence of subluxation on manipulation. A small amount of hypoechogenicity and hypervascularity anterior to the nerve within the cubital tunnel is thought to be postsurgical in nature.