You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which joint is most commonly affected in pseudogout - and explain in detail?
Ans. is 'a' i.e., Knee Pseudogout It is one of the forms of "Calcium pyrophosphate dihydrate" (CPPD) ahropathy. Pseudogout commonly involves the larger joints. Knee joint is most commonly involved; other sites are wrist, elbow, shoulder, ankle. Involvement of small joints is uncommon. Age group is > 60 yrs. In CPPD ahropathy, CPPD deposition occurs in aicular tissues. It can present in any of the following three forms :? 1) Asympatomatic chondrocalcinosis 2) Acute synovitis - Pseudogout 3) Chronic pyrophosphate ahropathy The radiologic hallmark of CPPD is "chondrocalcinosis. Chondrocalcinosis is seen as punctate and/or linear radiodense deposits in fibrocailaginous joint menisci or aicular hyaline cailage. Definitive diagnosis is made by synol fluid polarised light microscopy which shows weakly positive, birefringent, rhomboid crystals of CPPD.