A18.09

Clinical Causes: Primary infection from inhaled Mycobacterium tuberculosis bacteria spreading directly to musculoskeletal tissues. Spread from a nearby infected site, such as lymph nodes, bones, or other tissues. Hematogenous dissemination, wherein bacteria spread through the bloodstream from a primary site of infection. Reactivation of latent tuberculosis infection within musculoskeletal tissues after initial infection resolution.

Key Symptoms: Persistent joint pain and swelling, especially in the affected area. Limited range of motion or stiffness in the involved joints. Muscle pain or swelling indicative of tuberculous myositis. Tenderness over affected tendons or synovial membranes, characteristic of tuberculous tenosynovitis or synovitis. Low-grade fever and fatigue that may accompany local symptoms. Possible formation of abscesses or fistulas, leading to draining sinuses in chronic cases. Gradual development of deformities if the condition progresses untreated.

Diagnosis Path: Detailed medical history focusing on exposure risk and symptom duration. Physical examination revealing swelling, tenderness, or restricted movement. Imaging studies such as X-rays, MRI, or ultrasound to identify soft tissue abnormalities and bone involvement. Laboratory tests including erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) to detect inflammation. Microbiological analysis through tissue biopsy or aspirates to identify Mycobacterium tuberculosis. Histopathological examination revealing granulomatous inflammation with characteristic necrosis. Molecular tests like PCR to detect tuberculosis DNA in tissue samples.

Treatment Protocols: Long-term anti-tuberculosis medication regimen, typically including isoniazid, rifampin, ethambutol, and pyrazinamide, tailored by healthcare professionals. Duration of treatment often extends from 6 to 12 months based on severity and response. Surgical intervention may be necessary for abscess drainage, debridement, or joint stabilization in advanced cases. Supportive care such as physical therapy to restore function and mobility. Regular monitoring through clinical assessment and imaging to evaluate treatment response. Management of complications like deformities or fistulae, which may require multidisciplinary approaches.