Research Article
Joint Involvement in Primary Sjögren’s Syndrome: An Ultrasound “Target Area Approach to Arthritis”
Table 4
Presence of bone erosions in the study groups.
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Differences between patients with primary and secondary Sjögren’s syndromes. **Differences between patients with primary Sjögren’s syndrome and no-Sjögren controls. Abbreviations: MCP: metacarpophalangeal joints; IP: interphalangeal joint; PIP: proximal interphalangeal joints; PD: power Doppler signal. |