Ulnar nerve innervation of the triceps muscle: real or apparent?
A connection between the radial and ulnar nerves sometimes may exist, resulting in an apparent ulnar nerve origin of muscular branches to the medial head of the triceps, even though in all our specimens the fibers could be traced back to the radial nerve.
AT is a common complaint in rheumatology clinics. US alone cannot diagnose AT, but it serves as a supplement to clinical investigation. US can assist in achieving more precise diagnoses. Future studies must elucidate if the various diagnoses are associated with different prognoses and treatments.