Objective:To investigate the short-term clinical efficacy of two fixation methods, mini-titanium plate fixation and suture suspension, in cervical posterior unilateral laminoplasty, and to explore the relationship between changes in the cervical sagittal sequence and therapeutic outcomes.Methods:A retrospective analysis was conducted on 55 patients who underwent cervical posterior unilateral laminoplasty with mini-titanium plate fixation and 50 patients with suture suspension at the First People's Hospital of Lianyungang from September 2020 to January 2023. All patients were followed up for 12 months, and the axial symptoms was recorded. The main clinical efficacy evaluations included before surgery and 12 months after surgery visual analog score (VAS) for neck pain, Japanese Orthopaedic Association score (JOA) and neck disability index (NDI). Four parameters were recorded before surgery and 12 months after surgery to assess the sagittal sequence: C 2-7 sagittal vertical axis (C 2-7SVA), T 1 slope angle (T 1s), C 2-7Cobb angle and cervical range of motion. Results:The mini-titanium plate fixation group had 5 cases of axial symptoms, while the traditional suture suspension group had 16 cases; the postoperative VAS, JOA and C 2-7Cobb angle in the mini-titanium plate fixation group were all less than those in the suture suspension group, with statistically significant differences ( P<0.05). Specifically, the postoperative VAS in the mini-titanium plate fixation group was (1.93 ± 1.42) points, and (2.67 ± 2.15) points in the suture suspension group ( P = 0.049); the JOA was (10.39 ± 2.20) points in the mini-titanium plate fixation group and (9.62 ± 1.52) points in the suture suspension group ( P = 0.012); the C 2-7Cobb angle was (21.087 ± 3.564)° in the mini-titanium plate fixation group and (23.092 ± 1.265)° in the suture suspension group ( P = 0.003). There was no statistical difference in operation time and blood loss between two groups ( P>0.05). The postoperative C 2-7SVA, T 1s and range of motion in the traditional suture suspension group were less than those in the mini-titanium plate fixation group, with statistically significant differences ( P<0.05). Specifically, the postoperative C 2-7SVA was (25.700 ± 3.035) mm in the mini-titanium plate fixation group and (23.946 ± 3.079) mm in the suture suspension group ( P = 0.004); the postoperative T 1s was (28.770 ± 2.361)° in the mini-titanium plate fixation group and (26.746 ± 3.198)° in the suture suspension group ( P = 0.004); the postoperative range of motion was (32.651 ± 4.995)° in the mini-titanium plate fixation group and (28.672 ± 5.874)° in the suture suspension group ( P = 0.003). Conclusions:Cervical posterior unilateral laminoplasty with mini-titanium plate fixation can effectively improve VAS, JOA, and restore neurological function, maintaining the cervical spine's sagittal balance, stability, and maximum range of motion.

Objective:To investigate the short-term clinical efficacy of two fixation methods, mini-titanium plate fixation and suture suspension, in cervical posterior unilateral laminoplasty, and to explore the relationship between changes in the cervical sagittal sequence and therapeutic outcomes.Methods:A retrospective analysis was conducted on 55 patients who underwent cervical posterior unilateral laminoplasty with mini-titanium plate fixation and 50 patients with suture suspension at the First People's Hospital of Lianyungang from September 2020 to January 2023. All patients were followed up for 12 months, and the axial symptoms was recorded. The main clinical efficacy evaluations included before surgery and 12 months after surgery visual analog score (VAS) for neck pain, Japanese Orthopaedic Association score (JOA) and neck disability index (NDI). Four parameters were recorded before surgery and 12 months after surgery to assess the sagittal sequence: C 2-7 sagittal vertical axis (C 2-7SVA), T 1 slope angle (T 1s), C 2-7Cobb angle and cervical range of motion. Results:The mini-titanium plate fixation group had 5 cases of axial symptoms, while the traditional suture suspension group had 16 cases; the postoperative VAS, JOA and C 2-7Cobb angle in the mini-titanium plate fixation group were all less than those in the suture suspension group, with statistically significant differences ( P<0.05). Specifically, the postoperative VAS in the mini-titanium plate fixation group was (1.93 ± 1.42) points, and (2.67 ± 2.15) points in the suture suspension group ( P = 0.049); the JOA was (10.39 ± 2.20) points in the mini-titanium plate fixation group and (9.62 ± 1.52) points in the suture suspension group ( P = 0.012); the C 2-7Cobb angle was (21.087 ± 3.564)° in the mini-titanium plate fixation group and (23.092 ± 1.265)° in the suture suspension group ( P = 0.003). There was no statistical difference in operation time and blood loss between two groups ( P>0.05). The postoperative C 2-7SVA, T 1s and range of motion in the traditional suture suspension group were less than those in the mini-titanium plate fixation group, with statistically significant differences ( P<0.05). Specifically, the postoperative C 2-7SVA was (25.700 ± 3.035) mm in the mini-titanium plate fixation group and (23.946 ± 3.079) mm in the suture suspension group ( P = 0.004); the postoperative T 1s was (28.770 ± 2.361)° in the mini-titanium plate fixation group and (26.746 ± 3.198)° in the suture suspension group ( P = 0.004); the postoperative range of motion was (32.651 ± 4.995)° in the mini-titanium plate fixation group and (28.672 ± 5.874)° in the suture suspension group ( P = 0.003). Conclusions:Cervical posterior unilateral laminoplasty with mini-titanium plate fixation can effectively improve VAS, JOA, and restore neurological function, maintaining the cervical spine's sagittal balance, stability, and maximum range of motion.