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Stress fractures of the femoral neck in adults : an observational study on epidemiology, treatment, and reoperations from the Swedish Fracture Register

Sundkvist, Jonas ; Möller, Michael ; Rogmark, Cecilia LU ; Wolf, Olof and Mukka, Sebastian (2022) In Acta Orthopaedica 93. p.413-416
Abstract

Background and purpose — Stress fractures of the femoral neck (sFNFs) are uncommon injuries. Studies on sFNFs are rare. We describe the demographics, classification, treat-ment, reoperation rates, and mortality in a cohort of sFNF patients from the Swedish Fracture Register (SFR). Patients and methods — We included 146 patients ≥ 18 years of age with an sFNF registered in the SFR between 2011 and 2020. The cohort was linked with the Swedish Arthroplasty Register and reviewed using medical records and radiographs. We assessed the presence of disorders of bone remodeling, duration of symptoms, fracture classifica-tion, treatment, reoperations, and mortality. Results — The mean age was 58 years (21–96), 75% were women and the median... (More)

Background and purpose — Stress fractures of the femoral neck (sFNFs) are uncommon injuries. Studies on sFNFs are rare. We describe the demographics, classification, treat-ment, reoperation rates, and mortality in a cohort of sFNF patients from the Swedish Fracture Register (SFR). Patients and methods — We included 146 patients ≥ 18 years of age with an sFNF registered in the SFR between 2011 and 2020. The cohort was linked with the Swedish Arthroplasty Register and reviewed using medical records and radiographs. We assessed the presence of disorders of bone remodeling, duration of symptoms, fracture classifica-tion, treatment, reoperations, and mortality. Results — The mean age was 58 years (21–96), 75% were women and the median duration of symptoms was 23 days (1–266). 40% of patients had disorders of bone remodeling. 54% were undisplaced (uFNF), 30% displaced (dFNF), and 16% basicervical (bFNF). 14% of patients < 60 years were treated nonoperatively, by internal fixation (IF) in 77% and by arthroplasty in 10%. Patients ≥ 60 years were treated nonoperatively in 10%, IF in 40%, and arthroplasty in 49%. Nonoperative treatment was reserved for uFNFs or bFNFs, resulting in 35% receiving late surgery. The overall secondary or late surgery rate was 19%. Mortality was 2% at 90 days and increased to 3% at 1 year. Interpretation — sFNF has a biphasic age distribution. One-third of patients presented with a displaced FNF and those managed nonoperatively for an undisplaced sFNF were at risk of late surgery. The mortality rates for patients with these injuries was low.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Orthopaedica
volume
93
pages
413 - 416
publisher
Taylor & Francis
external identifiers
  • scopus:85128114910
  • pmid:35417029
ISSN
1745-3674
DOI
10.2340/17453674.2022.2460
language
English
LU publication?
yes
id
353c0a14-daa6-42b7-a99c-5af88f1a89e8
date added to LUP
2022-06-20 16:24:28
date last changed
2024-06-11 00:56:43
@article{353c0a14-daa6-42b7-a99c-5af88f1a89e8,
  abstract     = {{<p>Background and purpose — Stress fractures of the femoral neck (sFNFs) are uncommon injuries. Studies on sFNFs are rare. We describe the demographics, classification, treat-ment, reoperation rates, and mortality in a cohort of sFNF patients from the Swedish Fracture Register (SFR). Patients and methods — We included 146 patients ≥ 18 years of age with an sFNF registered in the SFR between 2011 and 2020. The cohort was linked with the Swedish Arthroplasty Register and reviewed using medical records and radiographs. We assessed the presence of disorders of bone remodeling, duration of symptoms, fracture classifica-tion, treatment, reoperations, and mortality. Results — The mean age was 58 years (21–96), 75% were women and the median duration of symptoms was 23 days (1–266). 40% of patients had disorders of bone remodeling. 54% were undisplaced (uFNF), 30% displaced (dFNF), and 16% basicervical (bFNF). 14% of patients &lt; 60 years were treated nonoperatively, by internal fixation (IF) in 77% and by arthroplasty in 10%. Patients ≥ 60 years were treated nonoperatively in 10%, IF in 40%, and arthroplasty in 49%. Nonoperative treatment was reserved for uFNFs or bFNFs, resulting in 35% receiving late surgery. The overall secondary or late surgery rate was 19%. Mortality was 2% at 90 days and increased to 3% at 1 year. Interpretation — sFNF has a biphasic age distribution. One-third of patients presented with a displaced FNF and those managed nonoperatively for an undisplaced sFNF were at risk of late surgery. The mortality rates for patients with these injuries was low.</p>}},
  author       = {{Sundkvist, Jonas and Möller, Michael and Rogmark, Cecilia and Wolf, Olof and Mukka, Sebastian}},
  issn         = {{1745-3674}},
  language     = {{eng}},
  pages        = {{413--416}},
  publisher    = {{Taylor & Francis}},
  series       = {{Acta Orthopaedica}},
  title        = {{Stress fractures of the femoral neck in adults : an observational study on epidemiology, treatment, and reoperations from the Swedish Fracture Register}},
  url          = {{http://dx.doi.org/10.2340/17453674.2022.2460}},
  doi          = {{10.2340/17453674.2022.2460}},
  volume       = {{93}},
  year         = {{2022}},
}