M46.25

Clinical Causes: Bacterial infections, most commonly Staphylococcus aureus Spread of infection from nearby tissues or organs, such as the lungs or kidneys Hematogenous spread, where bacteria travel through the bloodstream to the vertebrae Direct inoculation during spinal surgery or trauma Immunocompromised states, such as HIV/AIDS or cancer, increasing susceptibility Chronic infections that have recurred or persisted

Key Symptoms: Localized back pain in the thoracolumbar region, often persistent and worsening over time Fever and chills, particularly with active infection Swelling and tenderness over the affected vertebrae Reduced mobility or stiffness in the thoracolumbar region Neurological symptoms if the infection compresses spinal nerves, including numbness, weakness, or loss of sensation Unintended weight loss and fatigue in chronic cases

Diagnosis Path: Blood tests to identify signs of infection, such as elevated white blood cell count and inflammatory markers (ESR and CRP) MRI scans, which provide detailed images of soft tissues and bones to detect inflammation, abscess formation, or bone destruction Bone biopsy to identify the causative organism and assess antibiotic sensitivity CT scans for detailed bone structure evaluation Radioisotope scans that highlight areas of increased bone activity due to infection

Treatment Protocols: Prolonged course of targeted antibiotic therapy, often administered intravenously initially, based on the identified pathogen Surgical intervention in cases of spinal instability, abscess formation, or neurological compromise—such as abscess drainage, debridement, or stabilization procedures Supportive care, including pain management and bracing to limit spinal movement during healing Monitoring for treatment response through follow-up imaging and laboratory tests Managing underlying conditions that may predispose to infection, such as controlling diabetes or immunosuppressive therapies