Ulnar nerve dislocation and snapping triceps syndrome: Diagnosis with dynamic sonography - Report of three cases

Initial experience with the use of dynamic sonography of the elbow for diag nosing ulnar nerve dislocation and snapping triceps syndrome is reported. C ases of three consecutive patients who underwent sonographic evaluation of the elbow and subsequent open elbow surgery for symptomatic ulnar nerve dis location were reviewed. Dynamic sonography of the elbow was used to aid in the accurate diagnosis of and differentiation between ulnar nerve dislocati on and snapping of the medial triceps muscle.