Change in positive PD signal at 9 bilateral entheses (right and left) in patients with ankylosing spondylitis before and after 6 months of TNF-α blocking therapy (n = 85). Values are presented as no. lesions.
| Disappearance of Positive PD Signal | Appearance of Positive PD Signal | Positive PD Signal at Both Timepoints | ||
|---|---|---|---|---|
| Plantar fascia | Left | — | — | — |
| Right | — | — | — | |
| Achilles tendon | Left | 3 | — | — |
| Right | 1 | — | 1 | |
| Tibial tuberosity | Left | 2 | 3 | 2 |
| Right | 6 | 6 | — | |
| Patellar tendon | Left | 4 | 1 | — |
| Right | 3 | 4 | 1 | |
| Quadriceps tendon | Left | — | 2 | 1 |
| Right | 4 | 3 | 1 | |
| Pes anserine | Left | 14 | 19 | 10 |
| Right | 17 | 21 | 3 | |
| Greater trochanter (hip) | Left | 7 | 3 | — |
| Right | 4 | 2 | 1 | |
| Medial epicondyle (elbow) | Left | 6 | 3 | — |
| Right | 5 | 2 | — | |
| Lateral epicondyle (elbow) | Left | 12 | 4 | 3 |
| Right | 12 | 6 | 2 | |
| Total | 100 | 79 | 25 |
TNF-α: tumor necrosis factor-α; PD: power Doppler.