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The Forgotten Joint Score-12 in Swedish patients undergoing knee arthroplasty : a validation study with the Knee Injury and Osteoarthritis Outcome Score (KOOS) as comparator

Heijbel, Siri ; Naili, Josefine E. ; Hedin, Axel ; W-Dahl, Annette LU ; Nilsson, Kjell G. and Hedström, Margareta (2020) In Acta Orthopaedica 91(1). p.88-93
Abstract

Background and purpose — Having patients self-evaluate the outcome is an important part of the follow-up after knee arthroplasty. The Forgotten Joint Score-12 (FJS-12) introduced joint awareness as a new approach, suggested to be sensitive enough to differentiate well-functioning patients. This study evaluated the Swedish translation of the FJS-12 and investigated the validity, reliability, and interpretability in patients undergoing knee arthroplasty.

Patients and methods — We included 109 consecutive patients 1 year after primary knee arthroplasty to assess construct validity (Pearson’s correlation coefficient, r), internal consistency (Cronbach’s alpha [CA]), floor and ceiling effects, and score distribution. The Knee injury... (More)

Background and purpose — Having patients self-evaluate the outcome is an important part of the follow-up after knee arthroplasty. The Forgotten Joint Score-12 (FJS-12) introduced joint awareness as a new approach, suggested to be sensitive enough to differentiate well-functioning patients. This study evaluated the Swedish translation of the FJS-12 and investigated the validity, reliability, and interpretability in patients undergoing knee arthroplasty.

Patients and methods — We included 109 consecutive patients 1 year after primary knee arthroplasty to assess construct validity (Pearson’s correlation coefficient, r), internal consistency (Cronbach’s alpha [CA]), floor and ceiling effects, and score distribution. The Knee injury and Osteoarthritis Outcome Score (KOOS) was the comparator instrument for the analyses. Further, 31 patients preoperatively and 22 patients postoperatively were included to assess test–retest reliability (intraclass correlation coefficient [ICC]). 

Results — Construct validity was moderate to excellent (r = 0.62–0.84). The FJS-12 showed a high degree of internal consistency (CA = 0.96). The ICC was good preoperatively (0.76) and postoperatively (0.87). Ceiling effects were 2.8% in the FJS-12 and ranging between 0.9% and 10% in the KOOS. 

Interpretation — The Swedish translation of the FJS-12 showed good validity and reliability and can be used to assess outcome after knee arthroplasty. Moreover, the FJS-12 shows promising results in its ability to differentiate well-functioning patients. Future studies on unidimensionality, scale validity, interpretability, and responsiveness are needed for a more explicit analysis of the psychometric properties.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Orthopaedica
volume
91
issue
1
pages
6 pages
publisher
Taylor & Francis
external identifiers
  • pmid:31711349
  • scopus:85075005858
ISSN
1745-3674
DOI
10.1080/17453674.2019.1689327
language
English
LU publication?
yes
id
422361ea-82bf-4847-aa16-a12237014aef
date added to LUP
2019-12-09 14:22:49
date last changed
2024-04-17 00:11:28
@article{422361ea-82bf-4847-aa16-a12237014aef,
  abstract     = {{<p>Background and purpose — Having patients self-evaluate the outcome is an important part of the follow-up after knee arthroplasty. The Forgotten Joint Score-12 (FJS-12) introduced joint awareness as a new approach, suggested to be sensitive enough to differentiate well-functioning patients. This study evaluated the Swedish translation of the FJS-12 and investigated the validity, reliability, and interpretability in patients undergoing knee arthroplasty.</p><p>Patients and methods — We included 109 consecutive patients 1 year after primary knee arthroplasty to assess construct validity (Pearson’s correlation coefficient, r), internal consistency (Cronbach’s alpha [CA]), floor and ceiling effects, and score distribution. The Knee injury and Osteoarthritis Outcome Score (KOOS) was the comparator instrument for the analyses. Further, 31 patients preoperatively and 22 patients postoperatively were included to assess test–retest reliability (intraclass correlation coefficient [ICC]). </p><p>Results — Construct validity was moderate to excellent (r = 0.62–0.84). The FJS-12 showed a high degree of internal consistency (CA = 0.96). The ICC was good preoperatively (0.76) and postoperatively (0.87). Ceiling effects were 2.8% in the FJS-12 and ranging between 0.9% and 10% in the KOOS. </p><p>Interpretation — The Swedish translation of the FJS-12 showed good validity and reliability and can be used to assess outcome after knee arthroplasty. Moreover, the FJS-12 shows promising results in its ability to differentiate well-functioning patients. Future studies on unidimensionality, scale validity, interpretability, and responsiveness are needed for a more explicit analysis of the psychometric properties.</p>}},
  author       = {{Heijbel, Siri and Naili, Josefine E. and Hedin, Axel and W-Dahl, Annette and Nilsson, Kjell G. and Hedström, Margareta}},
  issn         = {{1745-3674}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{88--93}},
  publisher    = {{Taylor & Francis}},
  series       = {{Acta Orthopaedica}},
  title        = {{The Forgotten Joint Score-12 in Swedish patients undergoing knee arthroplasty : a validation study with the Knee Injury and Osteoarthritis Outcome Score (KOOS) as comparator}},
  url          = {{http://dx.doi.org/10.1080/17453674.2019.1689327}},
  doi          = {{10.1080/17453674.2019.1689327}},
  volume       = {{91}},
  year         = {{2020}},
}