Osteomyelitis: Inflammation Of Bone And Bone Marrow PDF

OSTEOMYELITIS Def Osteomyelitis: Inflammation of bone and bone marrow Bacterial...

OSTEOMYELITIS Def Osteomyelitis: Inflammation of bone and bone marrow Bacterial Acute osteomyelitis Chronic osteomyelitis Hematogenous Non Specific Non-Specific Class Hematogenous Potts Disease Tuberculosis of Sclerosing Brodie's abscess Chronic long bone osteomyelitis of following Garre’ acute remote infections + trivial Trauma Infection of a Tuberculosis Granuloma caused Staph. Aureus Acute “reach the blood” fractured bone by Tuberculosis Young osteomyelitis Hematogenous Metaphysis By Staph. Aureus Direct spread: No Preceding Pathogenesis Aetiology & Infection of skull Subperiosteal cold acute Most common in Children bones. e.g abscess Tuberculous chronic mastoiditis arthritis osteomyelitis 1-Long bone Fracture and 1 - lower thoracic and upper lumbar Localized 2-Vertebrae skull bones 2- cervical vertebrae Long bone Small In children “Metaphysis” Jaw Cortical Site infants and adults’ “Epiphysis” “In the intraosseous most vascular part of bone” Suppurative focus in the metaphysis Resembles the Two or more adjacent vertebrae are destructed subperiosteal Extensive new Surrounding penetrating endosteum periosteum Pathological Features pathology of the and replaced by caseous material as well as the cold abscess bone formation sclerotic bone Subperiosteal abscess Rupture hematogenous intervertebral disc Characterized by: Sinuses cloacae “Chronic” Then direct type “absent Kyphosis: due to anterior collapse of destroyed Bone Necrosis “Toxins & ischemia” subperiosteal vertebrae spread to - sequestrum “separation” & nearby joint abscess & Cold abscess: collection of caseous material - involucrum “Thickening different cervical region: retro- pharyngeal - lumbar location” region: lumbodorsal triangle or in femoral triangle “Through psoas sheath” Paraplegia: - Spinal cord compression - Traumatic cord injury by fractured vertebrae Pathological fracture. Tuberculous Amyloidosis Spread: Direct “arthritis & myositis & Complication arthritis Pathological neuritis” Blood “toxaemia & septicaemia Fracture &pyaemia” Chronic: - Secondary amyloidosis - Squamous cell carcinoma “sinus epith.”