The Relationship between Knee Adduction Moment and Knee Osteoarthritis Symptoms according to Static Alignment and Pelvic Drop
Table 1
Patients’ characteristics.
Characteristics
Total group n = 95
Varus (n = 77)
Valgus (n = 18)
More affected side
Contralateral side
More affected side
Contralateral side
Demographic variables
Age (years)
63.1 (10.3)
59.2 (11.3)
Women, n (%)
68 (88.3%)
17 (94.4%)
Height (m)
1.57 (0.06)
1.58 (0.05)
Weight (kg)
61.3 (10.2)
61.6 (12.4)
BMI (kg/m2)
24.8 (3.7)
24.6 (4.1)
Clinical variables
KL 2/3/4 (n)
14/26/37
15/39/23
0/10/8
3/11/4
KL grade
3.6 (0.6)
3.2 (0.6)
3.4 (0.5)
3.1 (0.6)
Alignment (HKA angle) (degrees)
5.9 (4.6)
3.7 (3.8)
−2.5 (2.9)
0.1 (2.1)
VAS pain (0–10)
6.1 (1.0)
2.5 (2.0)
5.4 (1.2)
2.2 (1.8)
HSS score (0–100)
56.9 (10.4)
57.9 (10.5)
Passive flexion/extension RoM (degrees)
107.0 (17.0)
113.4 (14.4)
106.9 (25.8)
113.9 (15.9)
Biomechanical variables
Self-selected walking speed (m/s)
0.70 (0.22)
0.83 (0.21)
Peak KAM (Nm/(BW × HT)%)
3.45 (1.14)
3.08 (1.12)
2.25 (0.93)
2.34 (1.11)
KAM impulse (Nm·s/(BW × HT)%)
1.79 (1.00)
1.58 (0.96)
0.88 (0.55)
1.03 (0.61)
KL: Kellgren and Lawrence; HKA: hip-knee-ankle; VAS: visual analog scale; HSS: the hospital for special surgery; RoM: range of motion; KAM: knee adduction moment; BW: body weight; HT: height. Significantly different to the contralateral side (). Means (standard deviations) are provided above for variables.
