[Clinical picture of medial prolapse of a lumbar intervertebral disk].

Case records of one-hundred patients operated on for centrally prolapsed lumbar intervertebral disc were analyzed for establishing of typical clinical symptom complex. Despite the complexity and variety of clinical manifestations five groups of patients were isolated on the basic of their pain features and neurological deficit. Besides, for more exact diagnosis of prolapsed level, the neurological signs were analyzed in relation to these levels.