Can CT-based gap and step-off displacement predict outcome after nonoperative treatment of acetabular fractures?
Journal
The bone & joint journal
ISSN: 2049-4408
Titre abrégé: Bone Joint J
Pays: England
ID NLM: 101599229
Informations de publication
Date de publication:
01 Sep 2023
01 Sep 2023
Historique:
medline:
4
9
2023
pubmed:
1
9
2023
entrez:
31
8
2023
Statut:
epublish
Résumé
The aim of this study was to investigate the association between fracture displacement and survivorship of the native hip joint without conversion to a total hip arthroplasty (THA), and to determine predictors for conversion to THA in patients treated nonoperatively for acetabular fractures. A multicentre cross-sectional study was performed in 170 patients who were treated nonoperatively for an acetabular fracture in three level 1 trauma centres. Using the post-injury diagnostic CT scan, the maximum gap and step-off values in the weightbearing dome were digitally measured by two trauma surgeons. Native hip survival was reported using Kaplan-Meier curves. Predictors for conversion to THA were determined using Cox regression analysis. Of 170 patients, 22 (13%) subsequently received a THA. Native hip survival in patients with a step-off ≤ 2 mm, > 2 to 4 mm, or > 4 mm differed at five-year follow-up (respectively: 94% vs 70% vs 74%). Native hip survival in patients with a gap ≤ 2 mm, > 2 to 4 mm, or > 4 mm differed at five-year follow-up (respectively: 100% vs 84% vs 78%). Step-off displacement > 2 mm (> 2 to 4 mm hazard ratio (HR) 4.9, > 4 mm HR 5.6) and age > 60 years (HR 2.9) were independent predictors for conversion to THA at follow-up. Patients with minimally displaced acetabular fractures who opt for nonoperative fracture treatment may be informed that fracture displacement (e.g. gap and step-off) up to 2 mm, as measured on CT images, results in limited risk on conversion to THA. Step-off ≥ 2 mm and age > 60 years are predictors for conversion to THA and can be helpful in the shared decision-making process.
Identifiants
pubmed: 37652442
doi: 10.1302/0301-620X.105B9.BJJ-2023-0191.R1
pii: BJJ-2023-0191.R1
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1020-1029Informations de copyright
© 2023 Author(s) et al.
Déclaration de conflit d'intérêts
All ICMJE Conflict of Interest forms for authors are on file with the publication and can be viewed on request. Each author certifies that neither he or she, nor any member of his or her immediate family, has funding or commercial associations (consultancies, stock ownership, equity interest, patent/licensing arrangements, etc.) that might pose a conflict of interest in connection with the submitted article.
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