Table 4 Prevalence of risk factors for knee/hip osteoarthritis in people with prolonged persistent knee and hip pain
Women | Men | |||
|---|---|---|---|---|
Knee pain | Hip pain | Knee pain | Hip | |
n = 142a | n = 102a | n = 123 | n = 49 | |
Age (years), mean (SD) | 50.6 (6.6) | 49.2 (7.7) | 49.4 (7.7) | 52.6 (6.7) |
BMI (kg/m2), mean (SD) | 28.4 (6.0) | 27.3 (5.7) | 28.1 (5.0) | 28.5 (4.8) |
Leisure time physical activity | ||||
High intensity activities | 2 (1) | 0 (0) | 3 (2) | 0 (0) |
Moderate intensity activities | 33 (23) | 22 (22) | 34 (28) | 13 (27) |
Low intensity activities | 85 (60) | 67 (66) | 65 (53) | 26 (53) |
Sedentary | 22 (15) | 13 (13) | 21 (17) | 10 (20) |
Previous knee/hip injury | 85 (60) | 38 (37) | 79 (64) | 25 (51) |
Previous knee/hip surgery | 51 (36) | 12 (12) | 46 (37) | 9 (18) |
Family history of osteoarthritis | ||||
No | 29 (20) | 18 (18) | 30 (24) | 12 (24) |
I don’t know | 23 (16) | 20 (20) | 31 (25) | 11 (22) |
Yes | 90 (63) | 64 (63) | 62 (50) | 26 (53) |
Knee alignment | ||||
Varus | 9 (6) | 4 (4) | 14 (11) | 5 (10) |
Neutral | 110 (79) | 84 (83) | 102 (83) | 43 (88) |
Valgus | 21 (15) | 13 (13) | 7 (6) | 1 (2) |
Foot rotation | ||||
Feet rotated out | 44 (31) | 30 (30) | 59 (48) | 20 (41) |
Straight | 80 (57) | 62 (61) | 62 (50) | 27 (55) |
Feet rotated in | 16 (11) | 9 (9) | 2 (2) | 2 (4) |
Occupational physical exposures | ||||
Bending for 2 h or more | 33 (24) | 29 (29) | 28 (23) | 14 (29) |
Walking for 2 h or more over level ground | 67 (48) | 46 (46) | 71 (58) | 29 (59) |
Kneeling for 30 min or more | 21 (15) | 10 (10) | 41 (33) | 16 (33) |
Squatting for 30 min or more | 18 (13) | 6 (6) | 21 (17) | 9 (18) |
Climbing a total of 5 or more flights of stairs | 14 (10) | 4 (4) | 20 (16) | 9 (18) |
Lifting or moving objects of 10 kg or heavier | 36 (26) | 21 (21) | 57 (46) | 32 (65) |
Driving a car for 4 h or more | 7 (5) | 5 (5) | 21 (17) | 9 (18) |
None of the above | 51 (36) | 41 (41) | 25 (20) | 8 (16) |