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Background  Anterior cervical discectomy and fusion (ACDF) is an alternative to conservative therapy in the treatment of cervical spondylopathy. This study evaluated the clinical outcome of ACDF with BMP-2-adsorbed β-tricalcium phosphate granules.    Methods  Thirty-two patients with cervical spondylopathy received treatment of ACDF with BMP-2-adsorbed β-tricalcium phosphate granules. The clinical outcomes were evaluated with the Japanese Orthopedic Association (JOA) scores and Neck Disability Index (NDI). Meanwhile, the cervical curvature and intervertebral heights were obtained through lateral cervical X-ray films pre- and postoperatively at each interval, and the precision of cervical fusion was assessed by three-dimensional computed tomography scan.    Results  The follow-up averaged 15.2 months (range 13–18). Average JOA scores significantly increased from a preoperative point (7.4 ± 1.2) to each interval after surgery ( P  < 0.05). NDI decreased from preoperative point (43.1 ± 9.0) to each interval after surgery ( P  < 0.05). The angles of cervical curvature and intervertebral heights were improved postoperatively and kept throughout the follow-up period. CT scan demonstrated a fusion rate of 82.9% at 6 months postoperatively and was improved to 100% at 12 months postoperatively. In all cases, no complications appeared and reported due to any lapse in surgical procedure skills throughout the follow-up period .Conclusions  Our preliminary findings suggest that BMP-2-adsorbed β-tricalcium phosphate granules will be an effective alternative to autogenous bone grafting for cervical fusion in treating cervical spondylopathy. Our surgical procedure usingβ-tricalcium phosphate granules could improve neurological function, recover intervertebral height and cervical curvature, and could be potentially exploitable in the clinical setting.

journal of orthopaedic surgery and research

Anterior cervical discectomy and fusion with recombinant human bone morphogenetic protein-2-adsorbed β-tricalcium phosphate granules: a preliminary report