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

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

Short-term functional outcomes of robotic-assisted TKA are better with functional alignment compared to adjusted mechanical alignment

“…Kafelov et al [24] found the FJS score (76.3 ± 13) similar to our study. Chithartha et al [25] found a constant evolution of the mean modified FJS from 64.4 at 3 weeks to 89.9 at 2 years, before a progressive decline to 82.7 at 10 years. Kayani et al [26] noted a significant improvement in the FJS at one-year, two-year, and at five-year follow-ups.…”

The Joint Awareness Score: A Shortened, Simplified, Improved Alternative to the Forgotten Joint Score

“…PROM validation relies on sufficient data and accounting for missing values is an area of contention [ 30 ]. Chithartha et al [ 31 ] and Robinson et al [ 32 ] addressed the missing data in their studies by changing the FJS to the Modified FJS, while others like Rombach et al [ 33 ] choose reasonable estimated data input to correct the information gaps. At 6 months, 10% of patients presenting for follow up did not meet valid JAS score threshold based on survey response input, and at 12 months, 5% of patient inputs did not meet valid JAS threshold.…”

Kinesiophobia and Artificial Joint Awareness After Total Knee Arthroplasty

“…The goal in joint arthroplasty is for patients to 'forget' the artificial joint, which is indicative of optimal patient satisfaction. Studies have demonstrated improvements in joint awareness and function six months post-TKA (11). However, the relationship between kinesiophobia and joint awareness post-TKA remains underexplored (12).…”