Shitong Feng1, Jisheng Lin1, Nan Su1, Hai Meng1, Yong Yang2, Qi Fei3. 1. Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, 100050, China. 2. Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, 100050, China. Electronic address: spineyang@126.com. 3. Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, 100050, China. Electronic address: spinefei@126.com.
Abstract
OBJECTIVE: In this randomized, single blind and controlled study, the feasibility and precision of 3-dimensional printing templates for cervical lateral mass screw insertion was evaluated. METHODS: A total of 6 patients (72 screws), who were diagnosed with cervical spondylotic myelopathy (CSM) and developmental cervical spinal stenosis, were randomly divided into A and B two groups. All subjects underwent modified posterior surgery with using cervical lateral mass screws insertion (C4-C6). Group A underwent surgeries with screw insertion assisted by the guidance of 3-dimensional printing templates and Group B underwent surgeries with screw insertion by freehand. The criteria of the accuracy of screw placement were set as the main evaluation indicators. RESULTS: There was no significant difference between the 2 groups in age, improvement rate of JOA, operation time and blood loss. According to Bayard's criteria, 32 screws (88.9%) were described as "acceptable" in group A and 22 screws (61.1%) were described as "acceptable" in Group B (P < 0.05). Based on our criteria, the "excellent and good" rate of screws was 83.3% in group A and 47.2% in Group B, respectively (P < 0.05). The precision of screws' location in Group A was superior to that in Group B. CONCLUSIONS: 3-Dimensional printing screw insertion templates may achieve (1) comprehensive visualization of the cervical vertebrae and lateral mass and the individual surgical planning using the 3-dimensional model preoperatively. (2) increasing the accuracy of cervical lateral mass screw insertion.
RCT Entities:
OBJECTIVE: In this randomized, single blind and controlled study, the feasibility and precision of 3-dimensional printing templates for cervical lateral mass screw insertion was evaluated. METHODS: A total of 6 patients (72 screws), who were diagnosed with cervical spondylotic myelopathy (CSM) and developmental cervical spinal stenosis, were randomly divided into A and B two groups. All subjects underwent modified posterior surgery with using cervical lateral mass screws insertion (C4-C6). Group A underwent surgeries with screw insertion assisted by the guidance of 3-dimensional printing templates and Group B underwent surgeries with screw insertion by freehand. The criteria of the accuracy of screw placement were set as the main evaluation indicators. RESULTS: There was no significant difference between the 2 groups in age, improvement rate of JOA, operation time and blood loss. According to Bayard's criteria, 32 screws (88.9%) were described as "acceptable" in group A and 22 screws (61.1%) were described as "acceptable" in Group B (P < 0.05). Based on our criteria, the "excellent and good" rate of screws was 83.3% in group A and 47.2% in Group B, respectively (P < 0.05). The precision of screws' location in Group A was superior to that in Group B. CONCLUSIONS: 3-Dimensional printing screw insertion templates may achieve (1) comprehensive visualization of the cervical vertebrae and lateral mass and the individual surgical planning using the 3-dimensional model preoperatively. (2) increasing the accuracy of cervical lateral mass screw insertion.
Authors: Ronald Man Yeung Wong; Pui Yan Wong; Chaoran Liu; Yik Lok Chung; Kwok Chuen Wong; Chi Yin Tso; Simon Kwoon-Ho Chow; Wing-Hoi Cheung; Patrick Shu-Hang Yung; Chun Sing Chui; Sheung Wai Law Journal: Bone Joint Res Date: 2021-12 Impact factor: 5.853
Authors: Peter A J Pijpker; Jos M A Kuijlen; Katalin Tamási; D L Marinus Oterdoom; Rob A Vergeer; Gijs Rijtema; Maarten H Coppes; Joep Kraeima; Rob J M Groen Journal: J Pers Med Date: 2022-06-30