Abstract
Metabolic bone disease is a common event in preterm infants. Between 24 wk gestation and term, the fetus accrues approximately 80% of body Ca, P and Mg. Consequently, preterm infants miss in part or completely the period of greatest mineral accretion. Ca and P requirements in preterm infants are based on demands for matching intrauterine bone mineral accretion rates and on maintenance of normal serum Ca and P concentrations. Daily physical therapy may be a useful adjunct, as it is associated with a significant increase in bone mineral density and content. Osteopenia/rickets of prematurity seems to be a self-resolving disease. However, this does not imply that a period of demineralization is acceptable. While the potential long-term consequences on peak bone mass are unclear at the moment, the short-term benefits include the avoidance of fractures, less marked dolicocephaly and improved linear growth.
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