Background: Sacroiliac screw (SIS) has become an effective internal fixation method for sacral fracture and sacroiliac joint dislocation. However, classic placement of SIS has some defects such as possibility of nerve injury with a learning curve and contraindications. An alternative to the classic placement of SIS is expected.Objective: To explore the feasibility of transfacet sacroiliac screw (TFSIS), so as to provide an alternative to the classic placement of SIS.Methods:CT scan data of pelvis in 60 healthy adults including 30 males and 30 females with an average age of 45 years (range 20-70 years), were transferred into a PC. The anatomical parameters of screw channel of TFSIS were measured by simulating the placement of TFSIS by Mimics 16.0 software on the PC. Secondly, according to the anatomical parameters of each pelvis, 5.0 mm and 6.0 mm screws were used respectively to simulate the placement of TFSIS in 30 pelvises to observe the effect of placement.Results: The length of screw channel was (10.84 ± 0.93) cm, the distance between the insertion point and the center of the superior facet of S1 was (1.14 ± 0.93) mm, the distance between the exit point and the upper -posterior border of acetabulum was (5.73 ± 2.57) mm, the anteversion angle between the central axis of the screw channel and the line parallel to the upper endplate of S1 was (53.96±3.94) °, the outward angle between the central axial of the screw channel and the longitudinal axis of the trunk was (47.4 7± 5.13)°, the safety angle in sagittal plane was (13.91 ± 2.92) °, the safety angle in coronal plane was (8.57 ± 1.63) °, the height was (11.91 ± 1.47) mm, and the width was (7.75 ± 0.89) mm. Within the channel for 5.0mm and 6.0mm screws accounted for 100%. Conclusions: Placement of TFSIS with a diameter of 5.0-6.0 mm and a length of 90 mm is safe and feasible, which may be used as an alternative to the classic placement of SIS.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.