Traditional Chinese-Hong Kong version of Forgotten Joint Score-12 (FJS-12) for patients with osteoarthritis of the knee underwent joint replacement surgery: cross-cultural and sub-cultural adaptation, and validation

Abstract

Background A patient-reported outcome (PRO) tool which reflects the outcomes of patients underwent total knee arthroplasty (TKA) are important to be “ceiling effect free” which commonly used PRO tools face. Forgotten joint score-12 (FJS-12) has been proved to reduce or even free from ceiling effect. FJS-12 has been translated to different languages. The objectives of this study are to validate FJS-12 in Traditional Chinese-Hong Kong language and look for the goodness of FJS-12 still exist in this language adapted FJS-12 version. Methods FJS-12 was administered to 75 patients whose majority was obese underwent TKA between September 2019 and March 2020. Patients completed 3 sets of questionnaires (FJS-12, Oxford Knee Score (OKS), and Numeric Rating Scale (NRS)) twice, 2 weeks apart. Reliability, internal consistency, responsiveness, test–retest agreement and discriminant validity were evaluated. Results Reliability of FJS-12 showed moderate to excellent internal consistency (Cronbach’s α = 0.870). Test–retest reliability of FJS-12 was good (ICC = 0.769). Bland–Altman plot showed good test–retest agreement. Construct validity in terms of correlations between FJS-12 and OKS, and FJS-12 and NRS were moderate at baseline (Pearson’s coefficient r = 0.598) and good at follow-up (r = 0.879). Smallest detectable change (Responsiveness) was higher than MIC. Floor effect was none observed, and ceiling effect was low. Discriminant validity was found to have no significance. BMI (obesity) did not affect FJS-12 outcomes. Conclusions The Traditional Chinese-Hong Kong version of FJS-12 showed good test–retest reliability, validity, responsiveness, BMI non-specific, with no floor and low ceiling effects for patients who underwent TKA. Sub-culture differences in individual PRO tools should be considered in certain ethnicities and languages.

Psychometric Analysis of the questionnaires for the assessment of lower limbs available in Italian version: a systematic review

“…All versions of the Italian questionnaires included for knee assessment (29)(30)(31)(32)(33)38) demonstrated internal consistency greater than 0.90 indicate excellent reliability with the exception of 4 questionnaires that have values between 0.75 and 0.9 indicate good reliability however all questionnaires in Italian analyzed are in line with the versions available in other languages but with some differences for example Italian FreKAQ (ICC= 0.92) which has a value higher than that of the original version (ICC= 0.76) (76) or the Forgotten Joint Score-12 (37) italian version presents reliability value (ICC= 0.9) higher than those observed in the Chinese version (ICC= 0.79) (77). About internal consistency, almost all versions of the Italian questionnaires (29)(30)(31)33,34,(36)(37)(38)) demonstrate a value equal to or higher than 0.9 however FJS-12 (37) reported a lower value (α=0.81) and nally the lowest value it was demonstrated by FreKAQ (32) (α=0.74) that it is acceptable but not ideal.…”

A novel image-based machine learning model with superior accuracy and predictability for knee arthroplasty loosening detection and clinical decision making

“…Moreover, in-depth analysis was carried out by the “past learning experience” of the model, which far exceeded the power of manual interpretation. It is also possible that the earliest sign of loosening can be detected by the AI prior to patient's report on their bodily sensations using knee scores [ 17 ]. Moreover, an image-based machine-learning model alone might actually be easier to be integrated into different clinical practice.…”

Avulsion Fracture of Bicruciate Ligament and Patellar Tendon in Bicruciate-Retaining Total Knee Arthroplasty

“…In the contralateral knee, BCR-TKA had a satisfactory outcome with a high Knee Society Knee Score [ 3 ]. With further screening and management of sarcopenia and osteoporosis, preoperative and postoperative muscle strengthening program and the use of robotic surgical system, the benefits of BCR-TKA can be further maximized.…”

“…Bicruciate-retaining total knee arthroplasty (BCR-TKA) attempts to recreate normal knee kinematics by preserving both the ACL and PCL. Patients following BCR-TKA have reduced joint awareness, as measured by the Forgotten Joint Score (FJS), compared to patients with posterior-stabilized total knee arthroplasty (PS-TKA) [ 2 , 3 ]. However, BCR-TKA is also associated with unique complications, like intercondylar fracture, which results in loss of ACL tension as the ACL inserts onto the intercondylar area [ 4 ].…”