[Specificity and indications of bone scan in non-neoplastic bone and joint disease in children. A study of seventy cases].

We studied 70 bone scans in pediatric patients to define the indications of this procedure in non-neoplastic disease. Sensitivity of bone scans in infections proved outstanding except in children under one year of age. Eighty-nine per cent of children with pain and fever and a positive bone scan had either an infection or osteochondritis. The same symptoms with a negative bone scan indicated either transient synovitis of the hip or the absence of bone lesions in 83% of cases. Children with pain as the only symptoms and a negative bone scan consistently had either transient synovitis of the hip, or normal bones and joints (100% of cases). Eighty-two per cent of children with pain and a positive bone scan had an infection or osteochondritis. Indications of bone scanning vary according to clinical features and include all children with functional impairment, pain and fever, and isolated limps with no obvious cause.