Anesthesia, urologic surgery, urological examination, genitourinary anomalies, specific and nonspecific urological infections, urinary calculi, renal carcinoma, carcinoma of the bladder, prostatic tumors, testicular tumors, benign prostatic hypertrophy, neurogenic bladder, bladder dysfunction, renal insufficiency, renal transplantation, genitourinary injuries, spinal cord tumors, lesions of the intervertebral disc, plastic surgery, skin grafts anf flaps, trauma of tendon, reconstruction in plastic surgery, neurosurgical examination, head trauma, vertebral column and spinal trauma, peripheral nerve injuries, neurosurgical tumors.