A18.03

Clinical Causes: Primary infection with Mycobacterium tuberculosis, which spreads through the bloodstream or lymphatic system. Reactivation of latent tuberculosis in the bones after an initial infection. Spread from nearby infected tissues, such as tuberculosis of the mastoid bones or other adjacent structures. Less commonly, direct inoculation during trauma or surgery.

Key Symptoms: Localized pain in the affected bones that worsens over time. Swelling and tenderness around the affected area. Reduced movement or function of the limb or area impacted. Persistent or recurring fever. Night sweats and fatigue. Loss of appetite and weight loss in prolonged cases. In advanced cases, abscess formation or bone destruction may become apparent.

Diagnosis Path: Diagnosing tuberculosis of the bones involves several steps. Medical professionals typically rely on a combination of clinical examination, imaging studies like X-rays, MRI, or CT scans, and laboratory tests. A biopsy of the affected bone tissue is often required to confirm the presence of Mycobacterium tuberculosis. Additional tests, such as blood tests for markers of infection and tuberculin skin test or interferon-gamma release assays, can support the diagnosis.

Treatment Protocols: Treatment of tuberculosis of the bones involves a prolonged course of antibiotics specifically targeting Mycobacterium tuberculosis. The typical treatment plan includes multiple anti-tubercular drugs taken over several months, often 6 to 12 months or longer in some cases. Surgical intervention may be necessary if there is significant bone damage, abscess formation, or to drain infected tissues. Rest and immobilization of the affected area can help reduce pain and facilitate healing. Regular medical follow-up is essential to monitor response to therapy and prevent recurrence.