Objective　To investigate the efficacy and mid-term follow-up analysis of anterior cervical self-stabilizing cage in the treatment of double-segment cervical spondylotic myelopathy. Methods　Fifty patients with double-segment cervical spondylotic myelopathy who underwent anterior cervical discectomy and fusion in our hospital from January 2021 to December

2021 were selected, and they were randomly divided into the observation group and the control group, with 25 cases in each

group. The patients in the observation group were treated with anterior cervical approach zero-notch self-stabilizing interbody

cage, while the patients in the control group were treated with the traditional screw-plate system internal fixation cage. A 6-month

interim follow-up was performed postoperatively. The operation time, intraoperative blood loss, NDI score, JOA score, bone graft

fusion rate, neck VAS score, upper limb VAS score, neurological function improvement rate before operation, 3 months after operation and 6 months after operation were observed in the two groups. And cervical imaging indicators such as C2-7Cobb angle,

C2-7SVA, T1S and segmental angle were measured. The incidence of postoperative complications in the two groups was observed. Results　The operation time and intraoperative blood loss were significantly different between the two groups (P<0.05),

but there was no significant difference in hospitalization time between the two groups (P>0.05). The NDI score, JOA score, bone

graft fusion rate, neck VAS score, upper extremity VAS score and neurological function improvement rate of the two groups at

3-month and 6-month follow-up were all better than those before operation (P<0.05). However, there was no significant difference in preoperative, 3-month and 6-month follow-up (P>0.05). There was no significant difference in bone graft fusion ratebetween observation group and control group at each time point (P<0.05). The C2-7 Cobb angle, C2-7SVA, T1S and segmentalangle of the two groups at 3-month postoperative and mid-term 6-month follow-up were better than those before surgery (P<0.05).

However, there was no significant difference in preoperative, 3-month and 6-month follow-up (P>0.05). The incidence of postoperative dysphagia in the observation group was significantly lower than that in the control group (P<0.05), and there was no

significant difference in other postoperative complications between the two groups (P>0.05). Conclusion　The anterior cervical

self-stabilizing cage has good curative effect in the treatment of double-segment cervical spondylotic myelopathy, with short operation time and low incidence of postoperative dysphagia.

　Cervical spondylotic myelopathy, Anterior cervical discectomy and fusion, Zero-notch self-stabilizing interbody cage