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[Reactive synovitis: MRI features with arthroscopic correlation]
M Coumbaras1, P Le Hir, A Sautet
1Service d'Imagerie Médicale, Hôpital Saint-Antoine, 184 rue du Faubourg Saint-Antoine, 75571 Paris 12. marc.coumbaras@imm.fr
Journal De Radiologie
|August 24, 2005
Summary
Magnetic Resonance (MR) imaging aids in detecting secondary reactive synovitis after trauma. Arthroscopy and biopsy are crucial for definitive diagnosis and to rule out other conditions.
Area of Science:
- Radiology
- Orthopedic Surgery
- Pathology
Background:
- Reactive synovitis can develop secondary to joint trauma or surgery.
- Accurate diagnosis is essential for appropriate management.
Purpose of the Study:
- To assess the efficacy of MR imaging in detecting and characterizing secondary reactive synovitis.
- To correlate MR findings with arthroscopic and pathological results.
Main Methods:
- Retrospective analysis of 10 patients undergoing MR imaging and arthroscopy of the knee or shoulder.
- Synovial thickening graded at MRI: Grade 0 (normal), Grade 1 (diffuse), Grade 2 (nodular), Grade 3 (pseudotumoral).
- Arthroscopy and pathology confirmed the diagnosis of reactive synovitis.
Main Results:
- MR imaging detected synovitis in 80% of cases, with 2 false negatives.
- Synovitis presentations included diffuse (30%), nodular (30%), and pseudotumoral (20%) on MRI.
- Adjacent bony erosions were noted in 5 cases.
Conclusions:
- MR imaging is valuable for detecting and evaluating secondary reactive synovitis.
- Arthroscopy and synovial biopsy remain necessary to exclude infectious or tumoral causes of synovitis.