Change in patient concerns following total knee arthroplasty described with the International Classification of Functioning, Disability and Health: a repeated measures design

Table 1 Pre-operative subject characteristics (n = 54).

Walking aid, n(%)
None	32 (59)
Cane	15 (28)
Four wheeled walker	7 (13)
Number of comorbidities, median(Q₁-Q₃)min- max*^†	3 (2–4) 1–6
Five most prevalent comorbidities, n(%)
High Blood Pressure	32 (59)
Back Pain	24 (44)
Diabetes	15 (28)
Heart Disease	12 (22)
Depression	10 (19)
KOOS subscale scores§ mean (SD^‡)
Pain	46.9 (15.1)
Symptoms	48.4 (14.9)
ADL	48.3 (16.9)
Sport/Rec	11.5 (14.6)
QOL	21.6 (14.5)
WOMAC subscale scores§ mean (SD)
Pain	51.5 (16.4)
Stiffness	41.4 (16.6)
Function	48.3 (16.9)
Numeric Pain Rating Scale^\|\|, mean (SD), min-max	6.4 (2.1) 1–10

* (Q1-Q3) = 25^th to 75^th percentile
^† min-max = minimum to maximum
^‡ SD = Standard deviation
^§ KOOS = Knee Injury and Osteoarthritis Outcome score: subscales are Pain, other Symptoms, function in daily living (ADL), function in sport and recreation (Sport/Rec) and knee-related Quality of life (QOL). WOMAC = Western Ontario and McMaster Universities Osteoarthritis Index: subscales are Pain, Stiffness and Function. Subscale scores can vary from 0–100 with 100 indicating the best state
^|| Values on the scale can vary from 0 = no pain to 10 = worst possible pain

ISSN: 1477-7525