Table 3.

Details of each component in KSS 2011 in subgroups (mean ± SD)

Factor	30s	40s	50s	60s	70s	80s
Symptoms	24.7 ± 0.8	24.2 ± 2.3	22.5 ± 4.1	22.1 ± 4.3	23.3 ± 3.2	19.6 ± 4.8
Patient satisfaction	39.5 ± 1.5	37.9 ± 1.5	34.8 ± 7.0	34.4 ± 7.8	35.5 ± 7.9	31.8 ± 5.6
Walking and standing	30.0 ± 0.0	28.4 ± 5.2	29.1 ± 3.3	27.3 ± 5.5	27.5 ± 6.2	22.0 ± 6.9
Standard activities	29.8 ± 0.7	29.4 ± 1.9	28.4 ± 3.4	27.9 ± 3.8	28.8 ± 2.1	23.7 ± 6.5
Advanced activities	24.7 ± 1.0	24.0 ± 3.4	23.6 ± 2.8	22.7 ± 4.2	23.4 ± 2.6	18.8 ± 5.5
Discretionary activities	14.8 ± 0.7	14.5 ± 1.5	13.9 ± 1.9	13.5 ± 2.5	14.2 ± 2.0	11.2 ± 3.0
Sum of KSS 2011	163.5 ± 3.7	158.3 ± 17.1	152.3 ± 18.4	148.0 ± 23.8	152.6 ± 16.1	127.0 ± 25.8

KSS 2011 = 2011 The Knee Society Score^®.