ArticleBMC musculoskeletal disorders2023
Guidance for dysmorphic sacrum fixation with upper sacroiliac screw based on imaging anatomy study: techniques and indications.
Article in BMC musculoskeletal disorders, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- CT-based feasibility of transsacral osseous corridors in older adults: the impact of lumbosacral transitional anatomy and sacral dysmorphism.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2026Article
- Feasibility study of antegrade insertion of lateral compression type-II screws guided solely by the combined obturator-oblique outlet view.International orthopaedics · 2026Article
- Prediction of Osteoporosis at the Sacrum Using Opportunistic CT of the Abdomen and Pelvis: A Retrospective Feasibility Study in 277 Patients Comparing CT and QCT Data.Journal of clinical medicine · 2026Article
- Novel 3D-navigated screw corridors for posterior pelvic ring stabilization: a finite element analysis.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026Article
- Treatment Strategies for Isolated LC-1 Pelvic Injuries: A Comparative Cohort Study of Percutaneous Posterior-Only vs. Combined Anterior-Posterior Fixation.Journal of clinical medicine · 2025Article
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7 authors.
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Abstract
objectiveThis study aimed to investigate the techniques and indications of upper sacroiliac screw fixation for the dysmorphic sacrum.
methodsThe dysmorphic sacra were selected from 267 three-dimensional pelvic models. The dysmorphic sacra which couldn't accommodate a 7.3 mm upper trans ilio-sacroiliac screw were classified as the main dysmorphic sacra. Then, the size of the bone corridor, the length of the screw in the corridor, and the orientation of the screw were measured. The insertion point on the sacrum was identified by two bone landmarks.
resultstotally, 30.3% of sacra were identified as the main dysmorphic sacra. The inclinations of the screw oriented from posterior to anterior were (21.80 ± 3.56)° for males and (19.97 ± 3.02)° for females (p < 0.001), and from caudal to cranial were (29.97 ± 5.38)° for males and (28.15 ± 6.21)° for females (p = 0.047). The min diameters of the corridor were (16.31 ± 2.40) mm for males and (15.07 ± 1.58) mm for females (p < 0.001). The lengths of the screw in the Denis III zone were (14.41 ± 4.40) mm for males and (14.09 ± 5.04) mm for females (p = 0.665), and in the Denis II+III zones were (36.25 ± 3.40) mm for males and (38.04 ± 4.60) mm for females (p = 0.005). The rates of LP-PSIS/LAIIS-PSIS were (0.36 ± 0.04) for males and (0.32 ± 0.03) for females (t = 4.943, p < 0.001). The lengths of LPM were (8.81 ± 5.88) for males and (-4.13 ± 6.33) for females (t = 13.434, p < 0.001).
conclusionWhen the sacrum has the features of "sacrum not recessed" and/or "acute alar slope", the conventional trans ilio-sacroiliac screw couldn't be placed safely. The inclination oriented from posterior to anterior and from caudal to cranial are approximately 20° and 30°, respectively. The bone insertion point locates in the rear third of the anterior inferior iliac spine to the posterior superior iliac spine. The sacroiliac screw is not recommended to fix the fractures in Denis III zone.
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