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Published in: Journal of Orthopaedic Surgery and Research 1/2024

Open Access 01-12-2024 | Research article

Critical distance of the sacroiliac joint for open reduction using screw fixation for traumatic sacroiliac joint diastasis: a retrospective study

Authors: Ruei-Shyuan Chien, I-Jung Chen, Chih-Yang Lai, Jui‑Ping Chen, Yi-Hsun Yu

Published in: Journal of Orthopaedic Surgery and Research | Issue 1/2024

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Abstract

Background

Osteosynthesis for sacroiliac joint (SIJ) diastasis using an iliosacral screw (ISS) and a trans-iliac-trans-sacral screw (TITSS) can be performed using a closed or an open method. However, no clear indication for open reduction has been established.

Methods

Data on patients with unilateral traumatic SIJ diastasis who underwent ISS and TITSS fixation were retrospectively collected and separated into groups according to the reduction method: closed reduction group (C group) and open reduction group (O group). Demographic data and perioperative image assessments were compared between the groups. The critical distance of the SIJ was identified to elucidate the indication for open reduction of the diastatic SIJ.

Results

Fifty-six patients met the inclusion criteria over a 3-year period. There was no significant difference in the reduction quality of pelvic ring injuries between the groups, according to Matta’s and Lefaivre’s criteria. The improvement in the SIJ distance was significantly greater in the O group than in the C group in the axial plane on multiplanar computed tomography (p = 0.021). This model predicted that a difference of > 3.71 mm between the injured and healthy SIJ was a recommended indication for open reduction, with an area under the curve of 0.791 (95% confidence interval 0.627–0.955, p = 0.004).

Conclusions

Open reduction for SIJ diastasis might achieve better reduction quality than does closed reduction in the axial plane in selected cases. When the difference between the injured and healthy SIJ was wider than 3.71 mm, open reduction was recommended for satisfactory radiological outcomes.
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Metadata
Title
Critical distance of the sacroiliac joint for open reduction using screw fixation for traumatic sacroiliac joint diastasis: a retrospective study
Authors
Ruei-Shyuan Chien
I-Jung Chen
Chih-Yang Lai
Jui‑Ping Chen
Yi-Hsun Yu
Publication date
01-12-2024
Publisher
BioMed Central
Published in
Journal of Orthopaedic Surgery and Research / Issue 1/2024
Electronic ISSN: 1749-799X
DOI
https://doi.org/10.1186/s13018-024-04759-z

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