Posterior hybrid technique for ossification of the posterior longitudinal ligament associated with segmental instability in the cervical spine.

Study Design: Retrospective case series.

Objective: To discuss the indications for a posterior hybrid technique for ossification of the posterior longitudinal ligament (OPLL) associated with segmental instability in the cervical spine and evaluate its effectiveness and safety.

Summary Of Background Data: Dynamic factors have been shown to play an important role in the progression of ossification and OPLL myelopathy.