Table 2.
Correlations between QST measures and clinical pain at baseline among knee OA patients (n = 35)
| QST Variables | Mean Daily Pain Intensity | Activity-Related KOOS Pain | Neuropathic Pain Symptoms | Shuttle Walk Time |
|---|---|---|---|---|
| PPTh- Trapezius | -.40* | .37* | -.43** | -.39* |
| PPTh- Thumb | -.33* | .37* | -.30 | -.32* |
| PPTh - Knee | -.33* | .30 | -.45** | -.42** |
| Cuff Pain Threshold | -.49** | .53** | -.49** | -.56** |
| Cold Pain Tolerance | -.21 | .14 | -.22 | -.32* |
| Maximum Cold Pain | .33* | -.13 | .24 | .16 |
| CPM Index | .10 | -.10 | .28 | .08 |
| Temporal Summation | .27 | -.19 | .31* | .24 |
| Cold Pain After-Sensations | .34* | -.33* | .39* | .25 |
QST quantitative sensory testing, PPTh pressure pain threshold, KPa Kilopascales, CPM conditioned pain modulation
*p < 0.05 for the group comparison
**p < 0.01 for the group comparison