[Status of deep muscle sensitivity and its role in the pathogenesis and course of lumbar osteochondrosis].

A study of the duration of a simple motor response to a passive displacement of a finger in 67 patients with lumbar osteochondrosis revealed 11 patients in whom parameters of this response were asymmetrical. Clinically these patients were characterized by a more severe course, frequent exacerbations, and an early development of the disease and hereditary predisposition to it. Sharp awkward movements were the most frequent provoking factor.