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How often Acute rheumatic fever presents with non migratory mono arthriits ?

Posted Apr 30 2012 1:35pm

Acute rheumatic fever classically involves large   joints of lower or upper limbs  referred to as  fleeting migratory polyarthritis .But this pattern is  not  exclusive.  In fact   acute rheumatic  fever commonly  present with atypical features .The incidence can be up to 25 % in various series .The most surprising thing is ,  it can involve spinal as well as hip joints . Mono arthritis is also possible.

The only contention is , atypical features are  frequently  labelled by  some  as post streptococal reactive arthritis instead of rheumatic fever .

It is  pure  semantics at play . Whether you agree with the terminology or not  ,  never hesitate to diagnose rheumatic fever when the  joint involvement is  atypical . If  you ignore this  you are bound to  be guilty  for damaging few hearts  later.

What are the unusual joint involvement in acute rheumatic fever  ?

  • Small joints of the feet
  • Small joints of the hands
  • Cervical spine
  • Wrist
  • Elbow
  • Shoulder
  • Hip
  • Thoracic  spine
  • Calcaneus
  • Lumbar spine

The involvement of above joint can be up  to 25%

Here is an excellent paper from Brazil about the huge variation in the pattern of joint involvement in acute rheumatic fever.


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