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Parameters | Case 1 | Case 2 | Case 3 | Case 4 | Case 5 |
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Age | 65 | 35 | 25 | 32 | 40 |
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Sex | Female | Male | Female | Female | Male |
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Comorbidity | Hypertension | None | None | None | Type 2 diabetes mellitus |
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History of COVID-19 infection (weeks) prior to presentation | 8 | 6 | 8 | 10 | 6 |
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Distribution of joint involvement | Both hands, including small joints | Both hands, including small joints | Generalized | Both hands, including small joints | Both hands, including small joints |
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Duration of joint pain | 4 weeks | 2 weeks | 15 days | 6 weeks | 2 weeks |
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Physical examination | Bilateral tenderness in wrists and PIP joints | Bilateral tenderness in wrists and MCP joints | Bilateral tenderness in wrists, MCP, ankles, and MTP joints | Bilateral tenderness in wrists and PIP joints | Bilateral tenderness in wrists and few MCP joints |
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Synovitis in the musculoskeletal ultrasound scan | Grade 2 synovitis in bilateral wrists and MCP joints 2 and 5 Grade 1 synovitis in bilateral PIP joints 2–4 | Grade 2 synovitis in bilateral wrists, MCP joints 2–5, ankles, and MTP joints 2 and 5 Grade 1 bilateral PIP joints 2–5 | Grade 2 synovitis in bilateral ankles and MTP joints 2 and 5 Grade 1 synovitis in bilateral wrist, PIP joints 2–5, and MCP joints 2–5 | Grade 2 bilateral synovitis in wrists and MCP joints 2, and PIP joints 2–5 | Grade 2 synovitis in bilateral wrists and MCP joints 1–5 |
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