Application of posture-aware surgical tool assisted screw placement in orthopedic surgery of adolescent idiopathic scoliosis

Abstract

Objective: This study summarized and analyzed the clinical data, preoperative preparation, surgical process and postoperative recovery of patients, to explore the clinical effect of posture-aware surgical tool in adolescent idiopathic scoliosis orthopedic surgery. Methods: This study demonstrated the whole process of using posture-aware surgical tools to assist the placement of screws in orthopedic surgery of adolescent idiopathic scoliosis. A 14-year-old and 8-month-old male with height 166 ​cm and weight 60 ​kg was diagnosed as Lenke type 1A adolescent idiopathic scoliosis. The preoperative X-ray films of the patients showed that the Cobb angle was 66°, CSVL-C7PL (Central Sacral Vertical Line -C7 plumb line) was 4 ​mm, SVA (sagittal vertical axis) was 5 ​mm. The operative fixed segment was T5∼L3 vertebral body. Renaissance and other three-dimensional software were utilized for screw placement angle, entry point and other related information before operation. The use of posture-aware surgical tools during surgery can accurately select screw length, type and screw placement angle, as planned by using three-dimensional software before operation. Results: The entire operation process was smooth. The intraoperative blood loss was about 600 ​ml, and the operation time was about 445 ​min. A total of 18 screws were placed during the whole operation.The patient's Cobb Angle was 8.94°, CSVL-C7PL was 2 ​mm, and SVA was 3 ​mm on postoperative radiographs. Conclusion: The implantation of pedicle screw assisted by posture-aware surgical tool is safe and effective with a smooth operation process and favorable patient outcomes.

Keywords

• Posture-aware surgical tool
• Adolescent idiopathic scoliosis
• Pedicle screw
• Malformation