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Bariatric surgery prior to total knee arthroplasty is not associated with lower risk of revision : a register-based study of 441 patients

Ighani Arani, Perna ; Wretenberg, Per ; Ottosson, Johan ; Robertsson, Otto LU and W-Dahl, Annette LU (2021) In Acta Orthopaedica 92(1). p.97-101
Abstract

Background and purpose — Obesity is a considerable medical challenge in society. We investigated the risk of revision for any reasons and for infection in patients having total knee arthroplasty (TKA) for osteoarthritis (OA) within 2 years after bariatric surgery (BS) and compared them with TKAs without BS. Patients and methods — We used the Scandinavian Obesity Surgery Registry (SOReg) and the Swedish Knee Arthroplasty Register (SKAR) to identify patients operated on in 2009–2019 with BS who had had primary TKA for OA within 2 years after the BS (BS group) and compared them with TKAs without prior BS (noBS group). We determined adjusted hazard ratio (HR) for the BS group and noBS group using Cox proportional hazard regression for... (More)

Background and purpose — Obesity is a considerable medical challenge in society. We investigated the risk of revision for any reasons and for infection in patients having total knee arthroplasty (TKA) for osteoarthritis (OA) within 2 years after bariatric surgery (BS) and compared them with TKAs without BS. Patients and methods — We used the Scandinavian Obesity Surgery Registry (SOReg) and the Swedish Knee Arthroplasty Register (SKAR) to identify patients operated on in 2009–2019 with BS who had had primary TKA for OA within 2 years after the BS (BS group) and compared them with TKAs without prior BS (noBS group). We determined adjusted hazard ratio (HR) for the BS group and noBS group using Cox proportional hazard regression for revision due to any reasons and for infection. Adjustments were made for sex, age groups, and BMI categories preoperatively. Results — 441 patients were included in the BS group. The risk of revision for infection was higher for the BS group with HR 2.2 (95% CI 1.1–4.7) adjusting for BMI before the TKA, while the risk of revision for any reasons was not statistically significant different for the BS group with HR 1.3 (CI 0.9–2.1). Corresponding figures when adjusting for BMI before the BS were HR 0.9 (CI 0.4–2) and HR 1.2 (CI 0.7–2). Interpretation — Our findings did not indicate that BS prior to TKA was associated with lower risk of revision.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Orthopaedica
volume
92
issue
1
pages
97 - 101
publisher
Taylor & Francis
external identifiers
  • pmid:33143505
  • scopus:85095794559
ISSN
1745-3674
DOI
10.1080/17453674.2020.1840829
language
English
LU publication?
yes
id
ec679e9b-9f96-47e0-a2d1-05710ebffa3b
date added to LUP
2020-11-26 14:14:03
date last changed
2021-06-16 01:17:48
@article{ec679e9b-9f96-47e0-a2d1-05710ebffa3b,
  abstract     = {<p>Background and purpose — Obesity is a considerable medical challenge in society. We investigated the risk of revision for any reasons and for infection in patients having total knee arthroplasty (TKA) for osteoarthritis (OA) within 2 years after bariatric surgery (BS) and compared them with TKAs without BS. Patients and methods — We used the Scandinavian Obesity Surgery Registry (SOReg) and the Swedish Knee Arthroplasty Register (SKAR) to identify patients operated on in 2009–2019 with BS who had had primary TKA for OA within 2 years after the BS (BS group) and compared them with TKAs without prior BS (noBS group). We determined adjusted hazard ratio (HR) for the BS group and noBS group using Cox proportional hazard regression for revision due to any reasons and for infection. Adjustments were made for sex, age groups, and BMI categories preoperatively. Results — 441 patients were included in the BS group. The risk of revision for infection was higher for the BS group with HR 2.2 (95% CI 1.1–4.7) adjusting for BMI before the TKA, while the risk of revision for any reasons was not statistically significant different for the BS group with HR 1.3 (CI 0.9–2.1). Corresponding figures when adjusting for BMI before the BS were HR 0.9 (CI 0.4–2) and HR 1.2 (CI 0.7–2). Interpretation — Our findings did not indicate that BS prior to TKA was associated with lower risk of revision.</p>},
  author       = {Ighani Arani, Perna and Wretenberg, Per and Ottosson, Johan and Robertsson, Otto and W-Dahl, Annette},
  issn         = {1745-3674},
  language     = {eng},
  number       = {1},
  pages        = {97--101},
  publisher    = {Taylor & Francis},
  series       = {Acta Orthopaedica},
  title        = {Bariatric surgery prior to total knee arthroplasty is not associated with lower risk of revision : a register-based study of 441 patients},
  url          = {http://dx.doi.org/10.1080/17453674.2020.1840829},
  doi          = {10.1080/17453674.2020.1840829},
  volume       = {92},
  year         = {2021},
}