Anterior Controllable Antedisplacement and Fusion as Revision Surgery for the Treatment of OPLL after Anterior and Posterior Decompression: A Case Report

1. Abstract
1.1. Background: In cases of cervical ossification of the posterior longitudinal ligament (OPLL), when initial anterior or posterior decompression fails to yield satisfactory results, the alternative approach is often chosen for revision surgery. Nevertheless, there is a lack of reported information regarding the treatment and prognosis of patients with complex OPLL who have undergone both anterior and posterior decompression but experienced relapse.