Wang Y, Hu W, Hu F, Zhang H, Wang T, Wang Y, Zhang X. Proper detailed parameters for S1 sacral alar iliac screw placement in the Chinese population, a 3D imaging study.
J Orthop Surg Res 2018;
13:39. [PMID:
29482590 PMCID:
PMC6389092 DOI:
10.1186/s13018-018-0739-8]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 02/02/2018] [Indexed: 11/12/2022] Open
Abstract
Background
S1-AI technique may be used as a salvage technique in pelvic fixation of complex spinal deformity surgery. However, the proper detailed parameters in the Chinese population has not been analyzed before to instruct S1-AI screws placement and to ensure the safety of clinical application while the trajectory in pelvic changes significantly at each angle.
Results
The ideal S1AI screw trajectory could be obtained in 28 of 30 female patient images (93.3%) and in all of the male patient images (100%). The screws that have already been used clinically in S2AI pathways can be applied in S1AI fixations.
Conclusion
It is feasible to place S1AI screws in 93.3% of female Chinese adult patients and in all male Chinese patients. Preoperative CT reconstruction should be performed to evaluate proper trajectory parameters and to avoid anterior violation.
Collapse