The occurrence of osteoporosis during pregnancy or the puerperium is r
are. A case with multiple vertebral fractures during the third pregnan
cy is reported, with the laboratory test results and bone density meas
urements obtained during the two-year follow-up. Pregnancy-related alt
erations in calcium and phosphorus metabolism contribute to the bone l
oss in pregnancy-related osteoporosis. A genetic predisposition probab
ly also play a role.