Effects of Teriparatide in Postmenopausal Women Previously Treated with Alendronate or Raloxifene.
Inclusion Criteria: * Postmenopausal women aged at least 50 years * A previous clinical diagnosis of osteoporosis * At high risk for fracture * Current therapy for at least 18 months prior to study entry with either raloxifene HCl or alendronate Na Exclusion Criteria: * History of metabolic bone disease other than osteoporosis * History of malignant neoplasm within the last 5 years except for superficial basal cell carcinoma or squamous cell carcinoma