Ulnar nerve dislocation


Ultrasound, being a real time study, is the imaging modality of choice for diagnosing ulnar nerve dislocation over the medial epicondyle during dynamic flexion and extension of the elbow. The transducer should be placed transversely between the olecranon and the medial epicondyle during the dynamic maneuver. It is important to ensure light transducer pressure is applied, otherwise we might prevent the ulnar nerve from sliding over the medial epicondyle. A snap was felt with the movement.