47-year-old female who had the onset of persistent vertigo. The first evaluations revealed right beating nystagmus on gaze straight and to the right, unsteady gait with limb ataxia, and positive head thrust to the left. Improvement seemed to be occurring in that gait deviation with eyes closed was no longer present. Vestibular physical therapy exercises were started. On the next evaluations there was paroxysmal positional vertigo from the left ear and minimal neurosensory hearing loss. An audiogram showed minor neurosensory deafness.

65-year-old female that suffers from pain in the left knee underwent examinations that showed femoral-tibial arthrotic manifestations, external degenerative meniscal tear and moderate joint effusion. A diagnosis of external degenerative meniscal tear was established. Further medical tests showed marked degeneration of the meniscal fibrocartilage, diffuse femoral-tibial arthrotic abnormalities, subchondral cysts and edema of the spongious bone, as well as rarefaction of the cartilage matrix, and manifestations of chondropathy.