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Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BACKGROUND: Traditional pedicle screw has the risk of screw loosening in osteoporotic lumbar spine internal fixation, and cortical bone trajectory screw fixation can increase the holding power of screws, which can improve the accuracy of screw placement and reduce radiation injury with the assistance of orthopedic robots. OBJECTIVE: To compare the accuracy and safety of robot-assisted and manual cortical bone trajectory screw fixation in the treatment of lumbar degenerative diseases with osteoporosis. METHODS: The clinical data of 39 patients with lumbar spine diseases and osteoporosis admitted from January 2018 to April 2020 were retrospectively analyzed. According to the different operation methods, the patients were divided into a robot group (n=19) and a manual group (n=20). The data of operation time, fluoroscopy frequency, fluoroscopy dose, intraoperative blood loss, incision length, hospitalization costs, and accuracy of screw placement were collected. Japanese Orthopedic Association scores were also used to compare preoperative and postoperative lumbar nerve function. This study protocol was approved by the Medical Ethics Committee of Sichuan Provincial People’s Hospital (approval No. 2019[298]). RESULTS AND CONCLUSION: Compared with the manual group, the operation time was shorter, and intraoperative fluoroscopy frequency and fluoroscopy dose were significantly lower in the robot group (P < 0.05). The robot group had significantly longer incision length and higher hospitalization cost than the manual group (both P < 0.05). There was no significant difference between the two groups of patients in intraoperative blood loss and Japanese Orthopedic Association scores before, 3 months and 6 months after operation (P > 0.05). Accuracy of screw placement was 93% (71/76) in the robot group and 80% (64/80) in the manual group, and there was a significant difference between the two groups (P=0.014). To conclude, robot-assisted screw placement can reduce operation time, fluoroscopy frequency, fluoroscopy dose and increase accuracy of placement, compared with manual cortical bone trajectory screw fixation. [ABSTRACT FROM AUTHOR]

BACKGROUND: Robot assisted orthopedic surgery has been gradually popularized in clinical practice, and its application fields include spine, joint, trauma and sports medicine, which are precise and minimally invasive. However, there are few reports on the application of robot assisted puncture biopsy in the diagnosis and treatment of spinal lesions. OBJECTIVE: To explore the clinical value of percutaneous biopsy assisted by orthopedic surgical robot in the diagnosis of spinal lesions. METHODS: The clinical data of 38 patients with spinal lesions treated in Sichuan Provincial People’s Hospital from November 2018 to January 2020 were analyzed retrospectively. All patients underwent percutaneous biopsy assisted by TINAVI orthopedic surgery robot. The biopsies were sent to the pathology department for histopathological examination. RESULTS AND CONCLUSION: (1) The successful rate of biopsy was 100% in 38 samples. Of them, 21 cases affected metastases; 4 cases had primary malignant tumors; 5 cases suffered from borderline tumors; 5 cases had benign tumors; and 3 cases experienced non-specific inflammatory reaction. (2) The average operation time was (37.11±5.65) minutes, and no complications occurred in all patients. (3) Robot assisted percutaneous biopsy is a safe, rapid, minimally invasive and accurate method for the diagnosis of spinal lesions. [ABSTRACT FROM AUTHOR]

BACKGROUND: Percutaneous kyphoplasty for multi-segmental spinal metastases has some problems, such as long operation time, high fluoroscopic dose, and easy leakage of bone cement. Robot-guided percutaneous kyphoplasty can optimize surgery and reduce the incidence of complications. OBJECTIVE: To evaluate the safety and advantage of robot-guided percutaneous kyphoplasty in treatment of multi-segmental spinal metastases. METHODS: The clinical data of 43 cases with multi-segmental spinal metastases with no signs of nerve injury from January 2018 to April 2019 were analyzed retrospectively. According to the different operation methods, the patients were divided into robot-guided group (22 cases) and traditional fluoroscopy group (21 cases). There was no significant difference in gender, age, number of diseased vertebrae, source of primary tumor and preoperative visual analogue scale score between the two groups (P > 0.05), with comparability. The data of operation time, fluoroscopy frequency, fluoroscopy dose, the incidence rate of pedicle wall breaking, angle of penetration, and leakage of bone cement were collected in both groups. Visual analogue scale score, the midline vertebral height and Cobb angle were compared preoperatively, 2 days postoperatively, and during the final follow-up between the two groups. RESULTS AND CONCLUSION: (1) The number of diseased vertebrae in the robot-guided group and traditional fluoroscopy group was 79 and 70, respectively. (2) The average operation time, fluoroscopy frequency and fluoroscopy dose in the robot-guided group were significantly lower than those in the traditional fluoroscopy group, and the difference was statistically significant (P < 0.001). (3) The incidence rate of pedicle wall breaking was 6% in the robot-guided group and 21% in the traditional fluoroscopy group, and the difference was statistically significant (χ2 =6.040, P=0.014). (4) The angle of penetration in the robot-guided group was larger than those in the traditional fluoroscopy group (P < 0.001). (5) The leakage rate of bone cement in the robot-guided group was lower than in the traditional fluoroscopy group (8%, 23%,χ2 =6.869, P=0.009). (6) There was no significant difference in visual analogue scale score, the midline vertebral heights and Cobb angle between the two groups before and 2 days after operation and during the final follow-up (P > 0.05). (7) It is indicated that robot-guided percutaneous kyphoplasty in treatment of multi-segmental spinal metastases can reduce operation time, reduce fluoroscopy frequency, reduce fluoroscopy dose, have good accuracy of penetration and low leakage rate of bone cement. [ABSTRACT FROM AUTHOR]