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Joints Inflammatory - Pathology (view source)
Revision as of 19:56, 18 August 2008
, 19:56, 18 August 2008no edit summary
**Morbidity up tp 50%
**Morbidity up tp 50%
**Affects mostly unthrifty lmbs
**Affects mostly unthrifty lmbs
**Fibrosis and [[Musculoskeletal terminology|osteophyte]] formation in later stages -> persistent lameness
**Fibrosis and [[Musculoskeletal Terminology - Pathology|osteophyte]] formation in later stages -> persistent lameness
*[[Corynebacterium species|'''''Corynebacterium pyogenes''''']]
*[[Corynebacterium species|'''''Corynebacterium pyogenes''''']]
**May cause post-dipping joint infections
**May cause post-dipping joint infections
**Chronic stage
**Chronic stage
***More commonly encountered
***More commonly encountered
***Erosion of articular surface of joints with formation of [[Musculoskeletal terminology|pannus +/- joint ankylosis]]
***Erosion of articular surface of joints with formation of [[Musculoskeletal Terminology - Pathology|pannus +/- joint ankylosis]]
***Vaccination prevents septicaemic and urticarial forms but has no effect on joints
***Vaccination prevents septicaemic and urticarial forms but has no effect on joints
****Probably due to dead bacteria still stimulating host immune system
****Probably due to dead bacteria still stimulating host immune system
***Mineralisation
***Mineralisation
***Mononuclear cell infiltration
***Mononuclear cell infiltration
***[[Musculoskeletal terminology|Pannus]] formation
***[[Musculoskeletal Terminology - Pathology|Pannus]] formation
***[[Joints - normal#Articular cartilage|Articular cartilage]] destruction
***[[Joints - normal#Articular cartilage|Articular cartilage]] destruction
**Marked villus hypertrophy of synovial membrane
**Marked villus hypertrophy of synovial membrane
**Cartilage erosion
**Cartilage erosion
**[[Musculoskeletal terminology|Pannus and periarticular osteophyte]] formation
**[[Musculoskeletal Terminology - Pathology|Pannus and periarticular osteophyte]] formation
**In severe cases ankylosis
**In severe cases ankylosis
*Histologically:
*Histologically: