The operative results of aged patients with cervical myelopathy due to ossification of the posterior longitudinal ligament were studied. Twenty-nine cases consisting of 25 males and 4 females were included. Their ages ranged from 65 to 81 years (average; 68.2 years old) at the time of operation. The evaluation of their overall results at the time of discharge using the JOA score system showed that their scores were lower than those of non-aged patients, because of the long duration of myelopathy. However, aged patients had the same reversibility of damaged cervical cord as non-aged patients. Based on our follow-up results, we propose that the operative therapy of aged patients with the desease must be hurried if the cervical myelopaty is distinct.