3D 数字辅助超声骨刀技术在胸椎管黄韧带骨化症中的短期疗效评价.

Objective: To investigate the safety and efficacy of the ultrasonic bone curette in the operation of thoracic ossification of ligamentum flavum, and the advantages of technology than the traditional high-speed drill. Methods: From 2016.01 to 2019.01，38 cases of thoracic ossification of ligamentum flavum were divided into two groups according to operation method. 17 patients received treatment with ultrasonic bone curette and 3D printing and digital technique, while 21 patients underwent surgery by high-speed drill. The lamina excision time, blood loss, the hospital length of stay (LOS) and the rate of complications such as dural injury and cerebrospinal fluid leakage were noted, and postoperative JOA score and the rate of postoperative neurological improvement were followed. Results: There was no significant difference between 2 groups on sex, age and average vertebral segment (P>0.05). The patients treated with ultrasonic bone curette and 3D printing and digital technique had better results in operation time and blood lose (P<0.05). The JOA score of two groups were significant improved after operation and there were significant difference between 2 groups (P<0.05). There were 4 cases of dural injury or cerebrospinal fluid leakage in observe group and 8 in control group. There was no significant difference between 2 groups (P>0.05). Among, 0 cases and 2 cases were found of equipment damage in observe group and control group respectively. Conclusion: Comparing the high-speed drill in decompression., using the ultrasonic bone curette and 3D printing and digital technique can significantly reduced the operation time and the bleeding amount while improve the clinic effect and no add the risk. [ABSTRACT FROM AUTHOR]