Risk factors of dislocation after total hip arthroplasty in patients with developmental dysplasia of the hip
- 05.01.2022
- Original Paper
Erschienen in:
- Verfasst von
- Seyed Mohammad Javad Mortazavi
- Ehsan Ghadimi
- Mohammad Vahedian Ardakani
- Mohammadreza Razzaghof
- Mohammad Ali Ghasemi
- Ali Nili
- Ali Vafaei
- Alireza Moharrami
- Sheila Rasta
- Erschienen in
- International Orthopaedics | Ausgabe 4/2022
Abstract
Purpose
Dislocation following total hip arthroplasty (THA) is a well-known complication. However, there is little data on its rate and predictors in patients with developmental dysplasia of the hip (DDH). The current study is aimed to determine the rate and specific risk factors of dislocation following THA in DDH patients.
Methods
All the medico-surgical records of primary THAs from January 2014 to January 2019 were retrospectively reviewed. They were categorized into three main groups: primary OA, DDH, and others. Pre-operative and post-operative radiographs, past medical and surgical history, and surgical notes were reviewed in DDH cases.
Results
In a total of 171 patients with DDH, 21 suffered from dislocation after THA (12%) which was significantly more frequent than those with primary OA. In univariate analysis, higher grade of dysplasia, smaller head size, intra-operative fracture, Wagner Cone stem, failure of offset restoration, and implanting the cup outside the Lewinnek’s safe zone were identified as predictors of dislocation. In multiple regression analysis, however, only higher Crowe grade, intra-operative fracture, and post-operative acetabular offset less than 16 mm were independent predictors of dislocation.
Conclusion
Dysplastic hips can be more prone to post-THA dislocation than those with primary OA. Higher grades of dysplasia, failure of offset restoration, and intra-operative fracture can increase the rate of dislocation in this group of patients.
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- Titel
- Risk factors of dislocation after total hip arthroplasty in patients with developmental dysplasia of the hip
- Verfasst von
-
Seyed Mohammad Javad Mortazavi
Ehsan Ghadimi
Mohammad Vahedian Ardakani
Mohammadreza Razzaghof
Mohammad Ali Ghasemi
Ali Nili
Ali Vafaei
Alireza Moharrami
Sheila Rasta
- Publikationsdatum
- 05.01.2022
- Verlag
- Springer Berlin Heidelberg
- Erschienen in
-
International Orthopaedics / Ausgabe 4/2022
Print ISSN: 0341-2695
Elektronische ISSN: 1432-5195 - DOI
- https://doi.org/10.1007/s00264-021-05294-w
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