Minimal clinically important difference (MCID), substantial clinical benefit (SCB), and patient-acceptable symptom state (PASS) in patients who have undergone total knee arthroplasty: a systematic review

Table 1 Generalities and patient baseline of the included studies

Author	Year	Country	Design	Journal	Analysis	PROMs	Patients (n)
Ayers et al. [38]	2023	USA	Retrospective	J Arthroplasty	MCID	KOOS	11,602
Carender et al. [39]	2022	USA	Retrospective	J Arthroplasty	MCID/PASS/SCB	WOMAC/ KOOS	8,600
Clement et al. [40]	2014	Scotland	Prospective	Knee Surg Sports Traumatol Arthrosc	MCID	OKS/ SF-12	505
Clement et al. [41]	2018	UK	Retrospective	Clin Orthop Relat Res	MCID	WOMAC	2,589
Clement et al. [42]	2021	UK	Prospective	Bone Joint J	MCID	FJS-12	484
Clement et al. [43]	2022	UK	Retrospective	Bone Joint Res	MCID/PASS	SF-36 PF	3,791
Escobar et al. [44]	2007	Spain	Prospective	Osteoarthritis Cartilage	MCID	WOMAC/ SF-36	65
Escobar et al. [45]	2013	Spain	Prospective	Osteoarthritis Cartilage	MCID	WOMAC	415
Gousopoulos et al. [46]	2023	France	Retrospective	Knee Surg Sports Traumatol Arthrosc	PASS	OKS/ FJS-12	135
Heijbel et al. [47]	2022	Sweden	Retrospective	Acta Orthop	SCB	FJS-12	183
Ingelsrud et al. [48]	2021	Denmark	Retrospective	Acta Orthop	PASS	OKS	571
Lizaur-Utrilla et al. [49]	2020	Spain	Prospective	Knee Surg Sports Traumatol Arthrosc	MCID/SCB	KSS	507
Maxwell et al. [50]	2014	USA	Prospective	J Rheumatol	MCID/PASS	WOMAC	228
Nishimoto et al. [51]	2023	Japan	Prospective	J Orthop Trauma Rehab	MCID	KOOS	62

FJS-12: Forgotten Joint Score-12; KOOS: Knee injury and Osteoarthritis Outcome Score; KSS: Knee Society Score; MCID: minimal clinically important difference; OKS: Oxford Knee Score; PASS: patient-acceptable symptom state; PROMs: patient-reported outcome measures; SCB: substantial clinical benefit; SF: Short Form; WOMAC: Western Ontario and McMaster Universities Osteoarthritis

ISSN: 2234-2451