The Study of the Early Administration of Alendronate on Prevention of Bone Loss After Hip Fracture.

Inclusion Criteria: Male and Female aged \> 55 Low trauma hip fracture up to 90 days Be willing to submit to periodic bone mineral density radiographic studies of the spine \& 24 hr urine collection Written informed consent \- Exclusion Criteria: * Disorders known to affect bone metabolism Not taking bisphosphonates within last 6 months Drugs known to interfere with calcium metabolism within the lats 6 months prior to hip fracture serum calcium\> 2.65 mmol/L Treatment with any investigational drug within the last 30 days