A long-term cross-sectional study with modified forgotten joint score to assess the perception of artificial joint after total knee arthroplasty.

Karthik Chithartha,Anjaly S Nair,Jai Thilak

doi:10.1051/sicotj/2021013

Karthik Chithartha, Anjaly S Nair + Show 1 more

Open Access

https://doi.org/10.1051/sicotj/2021013

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Abstract

Background and purpose: The ultimate goal for an arthroplasty surgeon is to provide the patient a joint that feels more like a natural joint. The Modified Forgotten Joint Score (MFJS) is a newly introduced functional scoring system that has a superior ability to assess this property among arthroplasty patients. The objective of this study is to evaluate the long-term temporal association of the MFJS and total knee arthroplasty (TKA). Methods: We assessed 360 patients post TKA with MFJS questionnaire. The patient groups were distributed at follow-up intervals of 3 weeks (n = 55), 6 months (n = 45), 1 year (n = 57), 2 years (n = 40), 3 years (n = 49), 5 years (n = 49), 7 years (n = 39), and 10 years (n = 26). Higher score suggests a forgotten artificial joint. Results: Post-operative mean MFJS scores were 64.4 ± 7.6 at 3 weeks, 87.7 ± 5.6 at 6 months, 89.2 ± 3.1 at 1 year, 89.9 ± 2.6 at 2 years, 89.4 ± 3.2 at 3 years, 89.1 ± 4 at 5 years, 84.5 ± 8.8 at 7 years, and 82.7 ± 11.9 at 10 years. The score at 3 weeks was significantly lesser than the average scores at other follow-up intervals. The score at 6 months was significantly higher compared to the score at 10 years. The average score at 1 year, 2 years, 3 years, and 5 years were significantly higher compared to the average score at 7 years and 10 years. Conclusion: The trend of the MFJS score was found to drastically improve from 3 weeks to 6 months and peak in 2 years after which the score tends to attain a plateau up to 5 years following which there is a decline in the score at 7- and 10-years post-surgery. Age did not have an influence on the variation in functional score in any of the follow-up groups. MFJS has a strong positive correlation with the well-recognised KOOS scoring system.Level of evidence: IV

Highlights

Among the joint problems, osteoarthritis (OA) is the most common and most frequent joint disease with a prevalence of 22–39% [1]
The extremely high economic burden of osteoarthritis is largely attributed to the disability caused by arthritis, expense of treatment, and comorbid disease due to the change of lifestyle adapted by the patients [2]
The postoperative Modified Forgotten Joint Score (MFJS) score averages were least at 3 weeks and highest at 2 years

Summary

Introduction

Osteoarthritis (OA) is the most common and most frequent joint disease with a prevalence of 22–39% [1]. For patients with advanced knee OA, TKA may be the only option for pain relief and to improve function. Total knee arthroplasty (TKA) is the most widely practiced surgical option for arthritis all over the TKA is a high-volume, high-cost medical intervention, numerous health-related quality-of-life outcome measures were developed to aid investigators to quantify improvements in TKA patient health status. Surgeon-based questionnaires and functional assessment of the surgery tend to give an outcome that is more than the actual perception of the knee by the patient. Harris et al [4] in their study reported a disparity between patient and surgeon satisfaction after total knee arthroplasty. Swedish Knee Arthroplasty Registry has shown that 17% of patients were dissatisfied post-TKA as reported by Dunbar et al [5].

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