Table 1.
Participant characteristics at initial timepoint and 12–18-month follow-up
| Variable | Initial | 12–18-Month follow-up | ||
|---|---|---|---|---|
| Cases | Controls | Cases | Controls | |
| n = 61 | n = 61 | n = 53 | n = 52 | |
| Age, yearsa | 64 (49–81) | 65 (48–82) | 65 (50–82) | 66 (49–83) |
| Sex, no. females | 25 | 26 | 21 | 22 |
| BMI, kg/m2 b | 31.4 (4.7) | 31.1 (4.7) | 31.1 (4.5) | 30.8 (4.6) |
| Time between baseline and follow-up MRI (12/18 months) | – | – | 35/18 | 26/26 |
| Initial minJSW, mmb | 3.81 (1.20) | 3.78 (1.19) | 3.86 (1.19) | 3.75 (1.20) |
| Kellgren Lawrence grade (0/1/2/3) | 7/11/21/22 | 8/9/24/20 | 7/11/17/18 | 8/9/20/15 |
| OARSI medial JSN grade (0/1/2) | 17/22/22 | 23/18/20 | 15/20/18 | 21/16/15 |
| OARSI lateral JSN grade (0/1/2) | 60/1/0 | 58/3/0 | 52/1/0 | 50/2/0 |
| Femorotibial alignment, degreesc | –6.0 (1.9) | –5.7 (2.1) | –6.0 (1.8) | –5.7(2.1) |
| minJSW change, mmb | – | – | –1.29 (0.63) | 0 (0.44) |
aMean (range)
bMean (standard deviation)
cMean (standard deviation), negative values indicate varus alignment