OPLL : Ossification of the Posterior Longitudinal Ligament This publication brings together information on all aspects of OPLL epidemiology etiology diagnosis and treatment. It contains contributions by Japanese researchers and surgeons including members of the Ministry of Health and Welfare Investigation Committee and by American surgeons with expertise in the field. Until now little has been published on the subject in English. This collection of reports is amply augmented with illustrations. What is OPLL How it should be treated This illustrated volume provides information on various aspects of OPLL epidemiology etiology diagnosis and treatment which is of special interest to orthopedic surgeons and neurosurgeons as well as to neurologists rheumatologists neuroradiologists and pathologists