Table 1

Patient characteristics


All N = 58
Men n = 30
Women n = 28

Age mean (years)
54
54
55
SD
7
8.7
4




BMI mean
29
28.7
29.5
SD
4.5
4
5




Medial OA (n)
49
27
22
Pre HKA mean (degrees)
170
170
171
SD
4.5
5
3.5




Lateral OA (n)
9
3
6
Pre HKA median (degrees)
189
188
189.5
IQR
184–194
184–190
184–194




Known knee trauma (n)
27
16
11
mean age (years)
51
50
53
SD
7
8
5




Not known knee trauma (n)
28
12
16
mean age (years)
58
58
56
SD
5
7
4




Physically active earlier in life (n)
45
25
20
     Level of physical activity (n)



     recreational
23
13
10
     competitive
12
11
1




Joint loading in sport activity (n)a



low
21
7
14
medium
12
6
6
high
12
12
0




Physically active the year prior surgery (n)
22
14
8
Smokers (n)
14
6
8




Working (n)
51
26
25
     Full time (n)
44
26
18
     Part time (n)
7
0
7
     Disability pension (n)
3
0
3
     Retired (n)
4
4
0

BMI = Body Mass Index, OA = Osteoarthritis, Pre HKA = Preoperative radiographic Hip-Knee-Ankle angle, IQR = Inter Quartile Range aaccording to Buckwalter & Lane [11].

W-Dahl et al. BMC Musculoskeletal Disorders 2005 6:18   doi:10.1186/1471-2474-6-18