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Multiple fractures occurred in 7 children treated with methotrexate for leukemia. Non-union or delayed union in spite of adequate immobilization also occurred in children on methotrexate. When the methotrexate was discontinued the fractures usually healed. Methotrexate appears to be a drug which inhibits osteogenesis, and may be promising in heterotopic ossification and related orthopedic conditions.
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Stanisavljević et al. (1977) studied this question.
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