Joint involvements in diseases
Posted by admin
on September 21, 2010
Osteoarthritis
- MC joint involved-Knee Joint
- Primary OA(idiopathic)
- Secondary OA(Trauma,metabolic etc)
- Joint mice,subchondral sclerosis,osteophyte formation,Joint space narrowing
- Heberdens nodes and Bouchards nodes.
- Bouchards——->PIP
- Heberdens——>DIP
- Mnemonic:bOuchards—>O for Osteoarthritis
- B Comes before H so B for PIP and H for DIP
Rheumatoid arthritis
- HLA DR4 association
- MC in women
- Synovial hypertrophy and granulation tissue formation over cartilage(Pannus)
- Symmetrical small Joint pains
- MCP and PIP involvement
- DIP never involved
- Swan neck deformity-Flexion at DIP and hyperextended PIP
- Boutonniere deformity-Flexed PIP
- Atlantoaxial subluxation
Psoriatic Arthritis
- DIP involvement
- Sausage digits
- Pencil in cup appearance
Gout
- MC in MEN
- Assymetric joint involvement
- Joint swollen,red,painful.
- Painful MTP joint of big toe-podagra
- Due to precipitation of monosodium urate crystals due to hyperuricemia.
- Gouty tophus
- Needle shaped negatively birefringent crystals
Pseudogout
- Calcium pyrophosphate crystals
- Basophilic rhomboid crystals
- Weakly positive birefringent
- Affects large joints,classically knee
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i think u have written wrong in swan neck deformity
Thank you very much for the valuable correction.I have edited Swan neck deformity as “Hyper extension at PIP and flexion at DIP