Table 3.
Regions showing significant differences in ALFF between pre- and post-TKA in older patients with KOA (n = 15).
| Cluster name | Brain region | Cluster size | MNI coordinates | T valueb | ||
|---|---|---|---|---|---|---|
| xa | ya | za | ||||
| Cluster 1 | Left precuneus gyrus | 744 | 0 | −51 | 51 | 8.35 |
| Cluster 2 | Left middle temporal gyrus | 515 | −42 | −66 | 6 | 5.15 |
ALFF, amplitude of low frequency fluctuation; KOA, knee osteoarthritis. The results were considered significant at p < 0.025 (two tailed, voxel-wise p < 0.01, GRF corrected).
a
Coordinates indicate location of maximum T-value for clusters or location of local maxima.
b
T value: Maximum T value of cluster or T statistic of local maxima.