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| | *[[Erysipelothrix rhusiopathiae|'''''Erysipelothrix rhusiopathiae''''']] | | *[[Erysipelothrix rhusiopathiae|'''''Erysipelothrix rhusiopathiae''''']] |
| − | **Most important and most common cause of arthritis
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| − | **Causes '''chronic serofibrinous polyarthritis'''
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| − | **Also causes '''discospondylitis'''
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| − | ***Similar to [[Joints Inflammatory - Pathology#In Dogs|discospondylitis in dogs]]
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| − | **Thickening of synovial membrane lining + plus hyperaemia and villus formation + lymphocyte and plasma cell infiltration
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| − | **Acute stage
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| − | ***Increased joint fluid + hot swollen joints
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| − | ***Also expresses as septicaemic and urticarial lesion on the back (diamond shaped)
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| − | ***May involve [[Endocarditis|endocarditis]] as a sequel
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| − | **Chronic stage
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| − | ***More commonly encountered
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| − | ***Erosion of articular surface of joints with formation of [[Musculoskeletal Terminology - Pathology|pannus +/- joint ankylosis]]
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| − | ***Vaccination prevents septicaemic and urticarial forms but has no effect on joints
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| − | ****Probably due to dead bacteria still stimulating host immune system
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| − | **Septicaemia lo9calises in meninges and joints
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| − | **Well known in piglets in their first two months of life
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| − | **Expresses as acute '''fibrinopurulent''' arthritis
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| | *'''''[[Corynebacterium pyogenes]]''''' and [[:Category:Staphylococcus species|'''''Staphylococci''''']] | | *'''''[[Corynebacterium pyogenes]]''''' and [[:Category:Staphylococcus species|'''''Staphylococci''''']] |
| | **Cause purulent arthritis | | **Cause purulent arthritis |