Foreign body induced synovitis of finger
Thorn injury to index finger near MCP - 8 mths back. C/o swelling over middle phalanx .
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Flexor tendon sheath shows mild effusion with synovial thickening over middle phalanx and distal interphalangeal joint region. No tendon thickening / tear is seen.
Two echogenic foci - foreign bodies are noted within tendon flexur tendon sheath. They are noted on plamer side of middle phalangeal head and neck. 2.5 mm sized foreign body - Superficial to flexure tendon.
1.5 mm sized foreign body - Deep to to flexure tendon.
No joint effusion or cortical erosion is noted in index finger.