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Published in: Archives of Orthopaedic and Trauma Surgery 4/2019

01-04-2019 | Trauma Surgery

Minimally invasive internal fixator for unstable pelvic ring injuries with a pedicle screw–rod system: a retrospective study of 23 patients after 13.5 months

Authors: Xingyi Hua, Shuang G. Yan, Yiliang Cui, Zongsheng Yin, Anna J. Schreiner, Florian Schmidutz

Published in: Archives of Orthopaedic and Trauma Surgery | Issue 4/2019

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Abstract

Purpose

Pelvic ring fractures are challenging injuries and require effective treatment due to the frequently compromised patient condition. The aim of this study was to evaluate the outcome of unstable pelvic ring injuries treated with a minimally invasive pedicle screw–rod system.

Methods

Retrospective analysis was performed for patients with an unstable pelvic ring injury that were treated with a minimally invasive anterior internal pelvic fixator (INFIX) with or without a posterior pedicle screw–rod fixator (6/2012–4/2015). The quality of reduction was evaluated by the Tornetta and Matta criteria and the clinical outcome was evaluated by the Majeed scores. Further evaluation included the operation time, intraoperative blood loss, and complication rate.

Results

A total of 23 patients (12 males and 11 females) with a mean age of 37.6 years (range 10–65 years) and a follow-up of 13.5 months (6–27 months) were evaluated. The Tile classification showed 13 type B (B1 = 6, B2 = 4, and B3 = 3) and 10 type C (C1 = 7 and C2 = 3) fractures. Mean operation time and intraoperative blood loss were 24.8 min (20–30 min) and 20.4 ml (16–29 ml) for an anterior INFIX (n = 13), and 60 min (45–70 min) and 150 ml (115–168 ml) when combined with a posterior pedicle screw–rod fixator (n = 10). Quality of reduction was excellent in 13, good in 6, and fair in 4 patients, with no signs of heterotopic ossification. Clinical results after 6 months were excellent in 14 patients, good in 6, fair in 2, and poor in 1. Unilateral thigh paresthesia was seen in 2 patients which resolved after implant removal.

Conclusions

The INFIX appears to be a safe and minimally invasive surgical technique which can effectively be combined with posterior pedicle screw–rod fixation. It also can be applied for the definitive treatment of vertically and/or rotationally unstable pelvic ring injuries, especially in severely compromised patients with a high mortality risk.
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Metadata
Title
Minimally invasive internal fixator for unstable pelvic ring injuries with a pedicle screw–rod system: a retrospective study of 23 patients after 13.5 months
Authors
Xingyi Hua
Shuang G. Yan
Yiliang Cui
Zongsheng Yin
Anna J. Schreiner
Florian Schmidutz
Publication date
01-04-2019
Publisher
Springer Berlin Heidelberg
Published in
Archives of Orthopaedic and Trauma Surgery / Issue 4/2019
Print ISSN: 0936-8051
Electronic ISSN: 1434-3916
DOI
https://doi.org/10.1007/s00402-018-3094-7

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