QUESTIIONS UNDER STUDY/PRINCIPLES: To assess the usefulness of several laboratory and radiological investigations for the limping @entity1 with suspected transient @entity603 of the hip. METHODS: The medical records of @entity1 admitted at our @entity1 's hospital for nontraumatic @entity158 between 1999 and 2007 were retrospectively reviewed. During the study period, all @entity1 without a definite diagnosis after routine investigations in the emergency department were admitted and a specific work-up including antinuclear antibodies titre, rheumatoid factor, antistreptolysin O titre, Lyme disease serology and hip ultrasonography were obtained. @entity1 were systematically re-evaluated 6 weeks after hospital discharge, with a clinical examination and radiological hip views. @entity1 were diagnosed with transient @entity603 of the hip if an ultrasound-confirmed hip effusion was present at time of admission, complete resolution of symptoms occurred without any specific treatment, and no other pathology of the hip was identified during follow-up. RESULTS: A total of 417 cases without definite diagnosis were admitted and were submitted to a specific work-up. Transient @entity603 of the hip was subsequently diagnosed in 383 @entity1 , @entity5414 in 1 @entity1 , and @entity625 in 1 @entity1 . Thirty-two @entity1 remained without diagnosis. No rheumatological condition was found. CONCLUSION: Our results suggest that most investigations performed during the initial work-up in @entity1 suspected transient @entity603 of the hip are unnecessary and should routinely include only.

Transient XXXX of the hip: which investigations are truly useful?

@entity1 :: ('9606', 'Species') :: ['children', 'Patients', 'patients', 'Children', 'patient', 'child'] @entity625 :: ('MESH:D001168', 'Disease') :: ['Lyme arthritis'] @entity5414 :: ('MESH:D001170', 'Disease') :: ['septic arthritis'] @entity603 :: ('MESH:D013585', 'Disease') :: ['synovitis'] @entity158 :: ('MESH:D010146', 'Disease') :: ['hip pain']
@entity603 :: (MESH:D013585,Disease) :: ['synovitis']
