Overview
Tuberculous arthritis is a form of extrapulmonary tuberculosis affecting the joints. It is a significant cause of morbidity, particularly in populations with a high burden of tuberculosis infection.Diagnosis
Diagnosis requires a high index of suspicion, especially in individuals with risk factors for tuberculosis 1.
Diagnostic modalities include synovial fluid aspiration for microscopy, culture, and nucleic acid amplification testing (NAAT) for Mycobacterium tuberculosis* 1.
Histopathological examination of synovial biopsy can reveal granulomatous inflammation characteristic of tuberculosis 1.
Imaging studies such as X-ray, CT, and MRI may show characteristic joint changes, including erosions and joint space narrowing 1.Management
Treatment involves a multi-drug anti-tuberculosis regimen, typically for 6 to 12 months 1.
Standard first-line anti-TB drugs include isoniazid, rifampicin, pyrazinamide, and ethambutol 1.
Adjunctive therapies may include corticosteroids in cases of significant inflammation, although their role is debated 1.
Surgical intervention, such as synovectomy or joint debridement, may be considered in select cases, particularly for joint destruction or persistent symptoms 1.Special Populations
Diabetes mellitus is a significant risk factor for tuberculosis disease, increasing the risk of TB incidence, mortality during treatment, relapse, and multidrug-resistant TB 1. Collaborative TB and diabetes care is recommended by the WHO 1.Key Recommendations
Treatment of tuberculous arthritis requires a multi-drug anti-tuberculosis regimen, typically for 6 to 12 months 1. (Evidence: Moderate)
Diabetes mellitus is associated with an increased risk of tuberculosis disease and adverse outcomes 1. (Evidence: Moderate)
Diagnostic evaluation should include synovial fluid analysis for acid-fast bacilli, culture, and NAAT for Mycobacterium tuberculosis 1. (Evidence: Moderate)References
1 Franco JV, Bongaerts B, Metzendorf MI, Risso A, Guo Y, Peña Silva L et al.. Diabetes as a risk factor for tuberculosis disease. The Cochrane database of systematic reviews 2024. link