The purpose of this study is to estimate the effect of oral Boniva (ibandronate sodium)taken once monthly versus placebo on bone quality and strength at the hip at one year.

Inclusion criteria:

• Ambulatory, postmenopausal women who are diagnosed with osteoporosis.
• Must be able to stand or sit upright for at least 60 minutes and swallow a tablet whole.

Exclusion criteria:

• Have been treated with other bisphosphonates or using chronic steroids within the past 6 months.
• Have a history of major upper GI diseases or have severe kidney dysfunction.
• Have a spine fracture (identified on x-ray).

Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.