A Single-blind RCT to Investigate the Effect of Alendronate on Knee Function Following ACLR

The oral ALN is the first-line therapy for osteoporosis, and it has been proven that once-weekly ALN 70 mg is an effective and well-tolerated dose for the treatment of postmenopausal osteoporosis. In this study, after receiving the approval of CREC and the Department of Health, we will purchase ALN from drug store. Previous clinical studies have shown that oral administration of ALN at 70mg/week for 1 year and at 5mg/day for 2 years reduced bone loss in postmenopausal women and patients who underwent total hip arthroplasty, respectively. Therefore, in the proposed study, ALN at the dose of 70mg/week will be given to patients post-ACLR for a duration of 8 weeks.