Significance of O-Arm Assisted Anterior Controllable Antedisplacement and Fusion Surgery in Treatment of Cervical Ossification of Posterior Longitudinal Ligament

BACKGROUND: Anterior controllable antedisplacement and fusion (ACAF) surgery for cervical OPLL is commonly used in clinical practice and has shown promising results. Nonetheless, precise slotting and lifting are the most critical procedures in ACAF surgery to avoid severalnique and dangerous problems, such as residual ossification and incomplete lifting. C-arm intraoperative imaging can help with traditional cervical surgery but not with the precise slotting and lifting operation in ACAF surgery.METHODS: Fifty-five patients admitted to our department with cervical OPLL were retrospectively enrolled. Given the selection of intraoperative imaging technique, patients were divided into the C-arm group and O-arm group. The operation time, intraoperative blood loss, hospital stay, Japanese Orthopaedic Association score, Oswestry Disability Index score, visual analog scale score, slotting grade, lifting grade, and complications were recorded and analyzed.RESULTS: At the final follow-up, all patients acquired satisfactory improvement of neurologic function. Patients in the O-arm group, on the other hand, had a better neurologic state 6 months after surgery and at the final follow-up than those in the C-arm group. Furthermore, slotting and lifting grade were considerably higher in the O-arm group than in the C-arm group. No severe complications were encountered in both groups.CONCLUSIONS: O-arm assisted ACAF can achieve ac-curate slotting and lifting, which might effectively reduce the occurrence of complications and is worthy of clinical application.