生物骨材料混合自体髂骨修复寰枢椎可复性脱位：后路固定植骨融合

Biological bone mixed with autologous bone for reducible atlantoaxial dislocation viaposterior reduction with bone graft fusion

BACKGROUND: Studies have shown that biological bone and autogenous iliac bone exhibit equivalent lumbar fusion effects, but the former one significantly reduces the risk of secondary surgery and contributes to improving vertebral dysfunction. OBJECTIVE: To evaluate the effect of biological bone mixed with autologous bone in posterior screw rod internal fixation with bone graft fusion for reducible atlantoaxial dislocation. METHODS: Seventy-two patients with recoverable atlantoaxial dislocation, including 37 males and 35 females, aged 28-72 years old, were all subjected to posterior atlantoaxial screw rod fixation with bone graft fusion: the atlas was fixed with lateral mass screw or pedicle screw, and the axis fixed with the pedicle screw, lamina screws or lateral mass screw. These patients were assigned into experimental group (n=34) undergoing biological bone mixed with autologous iliac particle bone graft fusion, or control group (n=38) undergoing autologous iliac bone graft fusion. Twelve months later, fusion rate, pain relief, cervical function recovery, cervical activity and complications were compared between the two groups. RESULTS AND CONCLUSION: After postoperatively 12 months, all patients were satisfied with atlantoaxial dislocation reduction, with a good bone fusion rate up to 100%, and their neck incision healed well by primary intention. The pain, cervical function, cervical curvature and activity were improved significantly in the two groups after treatment (P < 0.05), but there was no significant difference between the two groups. Compared with the control group, the amount of bone mass taken from the patient and pain relief time were lower in the experimental group (P < 0.05). Taken together, the biological bone mixed with autogenous iliac bone for reducible atlantoaxial dislocation via posterior screw rod internal fixation and bone graft fusion can rapidly relieve pain, reduce the amount of bone mass taken from patients, and achieve good fusion effect and cervical functional recovery.