Osteogenesis Imperfecta
Conditions
Brief summary
Alendronate should be considered as an alternative therapy of osteogenesis imperfecta (OI) because it significantly increased areal bone mineral density (BMD) and its Z score, decreased fracture incidence, inhibited bone resorption biomarkers. Alendronate exerted beneficial roles in different age brackets, especially in young patients with OI.
Interventions
Alendronate was administrated as 70 mg/week orally (Fosamax, Merck Sharp & Dohme.LTD.).
Sponsors
Study design
Eligibility
Inclusion criteria
1. children or adolescents aged 0-18 years, 2. had either a history of at least once minor-impact fracture or age and sex adjusted areal BMD Z score of -1.0 or less at lumbar spine or total hip; 3. with or without blue sclera, impaired hearing, joint hypermobility or dentinogenesis imperfecta; 4. with or without slim long bone; with or without cranial epactal bones, signs of multiple fractures, bony deformity in skeletal X-ray films.
Exclusion criteria
1. previous history of rickets, hyperparathyroidism, other metabolic or inherited bone diseases; malignant disease; coeliac disease; hyperthyroidism; 2. therapy history of BPs within recent two years; severe renal failure (creatinine clearance \<40 ml/min), chronic liver disease; severe diseases of gastrointestinal tract; 3. unable to keep upright for at least 30 minutes daily .
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| changes from baseline of areal BMD at lumbar spine and total hip | baseline and 12,24,36 months |
| annual clinical fracture incidence | baseline and 12,24,36 months |
Secondary
| Measure | Time frame |
|---|---|
| changes of bone turnover biomarkers | baseline and 6,12,24,36 months |
| changes of height | baseline and 12,24,36 months |