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Incidence of delayed union one year after peri-acetabular osteotomy based on computed tomography

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Abstract

Background

Pubic bone nonunion and delayed union are reported as post-operative complications after peri-acetabular osteotomy (PAO). However, few studies have determined the incidence of delayed union using computed tomography (CT) scans. This study aimed to determine the incidence of delayed union at one year after PAO using X-ray and CT scans.

Methods

We performed a retrospective review of 150 hips in 132 consecutive patients with acetabular dysplasia who underwent PAO between January 2012 and June 2016 and evaluated 107 hips for which pelvic CT scans taken at one year after PAO were available. Clinical evaluations included age at surgery, weight, body mass index (BMI) and history. Radiographic evaluations were to assess pubic, ischial and iliac delayed union at one year post-operatively.

Results

Based on X-ray analysis, the incidence of delayed union in the pubic, ischial and iliac bones was 11.2% (12 hips), 5.6% (6 hips) and 0% (0 hips), respectively, and20.6% (22 hips), 8.4% (9 hips) and 0% (0 hips), respectively, based on CT scans.

Conclusion

The incidence of delayed union of the pubis and ischium at one year after PAO according to CT scans was higher than that based on X-ray imaging. CT scans are useful in patients with some symptoms at the osteotomy site.

Level of Evidence: Level III.

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Funding

No external funding was received for this study.

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Authors and Affiliations

  1. Department of Orthopaedic Surgery, Fukuoka University Faculty of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka, 810-0180, Japan

    Shunsuke Akiho, Koichi Kinoshita, Ayumi Matsunaga, Satohiro Ishii, Hajime Seo, Jun Nishio & Takuaki Yamamoto

Authors
  1. Shunsuke Akiho
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  2. Koichi Kinoshita
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  3. Ayumi Matsunaga
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  4. Satohiro Ishii
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  5. Hajime Seo
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  6. Jun Nishio
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  7. Takuaki Yamamoto
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Correspondence to Shunsuke Akiho.

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The authors declare that they have no conflict of interest.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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Akiho, S., Kinoshita, K., Matsunaga, A. et al. Incidence of delayed union one year after peri-acetabular osteotomy based on computed tomography. International Orthopaedics (SICOT) 42, 1029–1034 (2018). https://doi.org/10.1007/s00264-017-3656-2

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  • DOI: https://doi.org/10.1007/s00264-017-3656-2

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