International Journal of Rheumatology / 2013 / Article / Tab 1

Review Article

The Utility of Outcome Measures in Total Knee Replacement Surgery

Table 1

Patient outcome measures in knee osteoarthritis severity.

PROMScoringResponse criteriaValidated for useTranslation

OKS [25]
Dawson et al. 1998
12 items (pain; 5 items, function; 7 items), each item worth
0–4 points. Range 0–48 points
Categories: excellent (>41), good (34–41), fair (27–33), and poor (<27)
MCID 3–5 points change in score [28]
≥30 points at 6 months after TKR [35]
TKRThai, British, Swedish, Dutch, Portuguese, German, Italian, Japanese, Chinese, Korean, and French

WOMAC [50]
Bellamy et al. 1988
24 items (pain; 5 items, stiffness; 2 items, and physical function; 17 items)
Range from 0 to 96 points.
MCID 15 points [63]
Responder criteria [52]: Improvement in pain or function ≥ 50% and absolute change ≥ 20
Or 2 of the 3 improvements as follows:
(i) pain ≥ 20% and absolute change ≥ 10,
(ii) function ≥ 20% and absolute change ≥ 10,
(iii) global assessment ≥ 20% and absolute change ≥ 10.
Post traumatic OA
>80 languages
Arabic, Chinese, Dutch, Finnish, German, Hebrew, Italian, Japanese, Korean, Moroccan, Persian, Singapore, Spanish, Swedish, Thai, and Turkish

KSS [64]
Insall et al. 1989
2011-KS [68]
Scuderi et al. 2012
KSS-2 components: a knee rating (0–100 points) and function (0–100 points)
Categories: excellent (≥80), good (70–79), fair (60–69), and poor (<60)
2011 KSS-5 subscales: knee score (0–50), pain score (0–25), satisfaction (0–40), expectation (0–15), and function (0–100)
MCID 34.5 points improvement in functional subscale [81]2011 KS
KSS-Portuguese, Spanish
2011-KSS-Italian, Japanese, Mandarin Chinese, Dutch, Portuguese, and Spanish

KOOS [38]
ROOS et al. 1998
42 items, 5 subscales: pain (9 items), symptoms (5 items), activities of daily living (17 items), sports and recreation (5 items), and quality of life (4 items). Each item worth 0–4 points. Scores for each subscale are calculated separately and then transformed into a score between 0 and 100.MCID 8–10 point change in scoreTKR
ACL Reconstruction
Posttraumatic OA
Austrian-German, Chinese, Croatian, Czech, Ukrainian, Estonian, French, German, Hindi (India), Italian, Thai, Japanese, Korean, Latvian, Lithuanian, Norwegian, Persian, Polish, Portuguese, Russian, Dutch, Singapore, English, Slovakian, Spanish, Slovenian, Turkish, and Danish

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