Table 2. A comparison of affected anatomical sites between PsA and non-PsA patients (%).
| Anatomical sites | Non-PsA (n=640) | PsA (n=240) | P |
|---|---|---|---|
| Knee | 19.22 | 33.75 | 0.000 |
| Wrist | 5.63 | 26.67 | 0.000 |
| MTP2 | 10.00 | 25.00 | 0.000 |
| Ankle | 8.44 | 23.75 | 0.000 |
| Plantar aponeurosis | 7.97 | 18.75 | 0.000 |
| MTP3 | 7.97 | 17.92 | 0.000 |
| Flexor tendon of hand | 1.41 | 17.50 | 0.000 |
| PIP3 of hand | 5.47 | 15.42 | 0.000 |
| IP1 of hand | 0.63 | 13.75 | 0.000 |
| MCP1 | 0.47 | 12.92 | 0.000 |
| MCP5 | 5.47 | 12.92 | 0.000 |
| Shoulder | 2.66 | 11.25 | 0.000 |
| PIP2 of hand | 1.88 | 10.83 | 0.000 |
| DIP3 of hand | 2.34 | 10.42 | 0.000 |
| Posterior tibialis tendon | 2.34 | 9.58 | 0.000 |
| DIP2 of hand | 2.34 | 9.17 | 0.000 |
| PIP4 of hand | 2.66 | 8.75 | 0.000 |
| PIP5 of hand | 0.63 | 7.50 | 0.000 |
| MTP5 | 1.09 | 7.50 | 0.000 |
| PIP2 of toe | 0.78 | 7.08 | 0.000 |
| PIP4 of toe | 0.78 | 6.25 | 0.000 |
| Extensor tendon of hand | 0.78 | 5.83 | 0.000 |
| Proximal insertion of patellar tendon | 1.09 | 5.83 | 0.000 |
| MCP2 | 7.03 | 14.58 | 0.001 |
| Elbow | 2.34 | 7.50 | 0.001 |
| IP1of toe | 7.81 | 15.00 | 0.002 |
| Retrocalcaneal bursa | 2.66 | 6.25 | 0.015 |
| Distal insertion of patellar tendon | 4.06 | 8.33 | 0.016 |
| MTP4 | 5.94 | 10.83 | 0.019 |
| Tendon of long heads of biceps brachii | 4.84 | 8.75 | 0.036 |
| MCP4 | 5.63 | 9.17 | 0.067 |
| Achilles tendon | 32.81 | 39.17 | 0.080 |
| MCP3 | 6.09 | 8.75 | 0.177 |
| Subacromial-subdeltoid bursa | 6.88 | 9.58 | 0.199 |
| Quadriceps tendon | 31.09 | 34.58 | 0.331 |
| MTP1 | 29.84 | 28.33 | 0.679 |
PsA, psoriatic arthritis; MTP, metatarsophalangeal; PIP, proximal interphalangeal; IP, interphalangeal; MCP, metacarpophalangeal; DIP, distal interphalangeal.