Which of the following is not true regarding tubercular osteomyelitis

peiosteal reaction is usually not seen in tubercular osteomyelitis. Tuberculous osteomyelitis * Bone Tuberculosis * Hematogenous spread of organisms from an active focus of tuberculosis : -- lung (common) -- mediastinal or aoic lymph nodes -- kidney -- bowel * Most common in children&youngs * The veebrae and the long bones of the extremities are most frequently involved * In many cases the infection also spreads to contiguous joints such as the hip, knee, and interveebral joints Pathology * The onset of tuberculous osteomyelitis is usually insidious. * The infection is unrelenting, necrotizing, and destructive of bone, cailage, and soft tissue. * The tuberculous exudation and the inflammatory necrosis may extend through the medullary and coical bone, penetrate through the periosteum, and progress through the epiphysial and aicular , cailage. * Tunneling sinuses may extend into the adjoining soft tissue and drain to the skin surface. * Sequestration and the formation of an involucrum are uncommon . Tuberculosis of the spine (Potts disease)* * The thoracic and lumbar veebrae * The infection often begins in the anterior pa of the veebral body and extends into the interveebral disc: 7- - Destruction and collapse of the veebral bodies and discs -- Kyphosis -- Kyphoscoliosis xray of tb osteomylitis ref : maheswari 9th ed