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International Orthopaedics
Published in: International Orthopaedics 12/2019

01-12-2019 | Osteoarthrosis | Original Paper

The forgotten joint score in total and unicompartmental knee arthroplasty: a prospective cohort study

Authors: Geert Peersman, Jeroen Verhaegen, Barbara Favier

Published in: International Orthopaedics | Issue 12/2019

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Abstract

Purpose

The purpose of this study was to assess whether unicompartmental knee arthroplasty (UKA) results in better patient-reported and clinical outcome than total knee arthroplasty (TKA). The study hypothesis was UKA yields better patient-reported and clinical outcomes than TKA.

Methods

Our prospective cohort study compared patients who underwent medial UKA or TKA from February 2014 through June 2015. Forgotten Joint Score (FJS), the short form of the Knee Injury and Osteoarthritis Outcome Score (KOOS PS), EuroQOL Five Dimensions Questionnaire (EQ-5D), and the Knee Society Score (KSS) were completed at two weeks, six weeks, three months, six months, and one year post-operatively. The KOOS PS, EQ-5D, and the KSS were also documented pre-operatively.

Results

Fifty-seven patients (57 knees) were allocated to the UKA group and 62 patients (62 knees) to the TKA group. At baseline, no statistically significant differences were observed between groups regarding patient demographics and pre-operative scores. Except for FJS at 2 weeks (p = 0.326), all postoperative scores revealed significant differences as early as two weeks and up to 12 months (p < 0.05).

Conclusions

Our findings suggest UKA patients are less aware of their joint replacements than TKA patients for medial osteoarthritis of the knee. UKA conserves more soft tissue and bone than TKA, which may be the reason for the differences observed.
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Metadata
Title
The forgotten joint score in total and unicompartmental knee arthroplasty: a prospective cohort study
Authors
Geert Peersman
Jeroen Verhaegen
Barbara Favier
Publication date
01-12-2019
Publisher
Springer Berlin Heidelberg
Published in
International Orthopaedics / Issue 12/2019
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-019-04342-w

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