From the Guidelines
For a 62-year-old female with a T-score of -2.6, I strongly recommend initiating pharmacological treatment for osteoporosis along with lifestyle modifications, prioritizing alendronate, risedronate, zoledronic acid, or denosumab as first-line therapy to reduce the risk of hip and vertebral fractures, as supported by the most recent and highest quality evidence from the American College of Physicians guideline update 1. The patient's T-score indicates osteoporosis, putting her at significant risk for fracture.
- Bisphosphonates, such as alendronate 70 mg once weekly or risedronate 35 mg once weekly, are effective in reducing vertebral and nonvertebral fracture risk, with a strong recommendation and high-quality evidence 1.
- Additionally, denosumab has been shown to reduce the risk of vertebral and nonvertebral fractures, with a strong recommendation and high-quality evidence 1.
- Calcium supplementation of 1000-1200 mg daily and vitamin D 800-1000 IU daily are essential adjuncts to medication therapy, as adequate calcium and vitamin intake is crucial for fracture prevention in postmenopausal females with low bone mass or osteoporosis 1.
- Lifestyle modifications, including weight-bearing exercises for 30 minutes most days of the week, balance training, smoking cessation, and limited alcohol consumption, should also be incorporated into her routine.
- The decision to treat should be based on a discussion of patient preferences, fracture risk profile, and benefits, harms, and costs of medications, with consideration of individualized assessment of bone density, history of fractures, and multiple risk factors for fractures 1.
- Treatment effectiveness should be monitored with bone mineral density testing every 1-2 years and reassessment of fracture risk, with consideration of stopping bisphosphonate treatment after 5 years unless the patient has a strong indication for treatment continuation 1.
From the FDA Drug Label
The diagnosis can be confirmed by the finding of low bone mass, evidence of fracture on x-ray, a history of osteoporotic fracture, or height loss or kyphosis, indicative of vertebral (spinal) fracture Osteoporosis occurs in both males and females but is most common among women following the menopause, when bone turnover increases and the rate of bone resorption exceeds that of bone formation. Daily oral doses of alendronate (5,20, and 40 mg for six weeks) in postmenopausal women produced biochemical changes indicative of dose-dependent inhibition of bone resorption, including decreases in urinary calcium and urinary markers of bone collagen degradation Long-term treatment of osteoporosis with alendronate sodium 10 mg/day (for up to five years) reduced urinary excretion of markers of bone resorption, deoxypyridinoline and cross-linked N-telopeptides of type I collagen, by approximately 50% and 70%, respectively, to reach levels similar to those seen in healthy premenopausal women
For a 62-year-old female with a score of -2.6, alendronate can be considered as a treatment option for osteoporosis. The goal of treatment is to reduce bone resorption and increase bone mass.
- Alendronate has been shown to reduce urinary excretion of markers of bone resorption and increase bone mass in postmenopausal women.
- The recommended dose of alendronate for the treatment of osteoporosis in postmenopausal women is 10 mg/day or 70 mg once weekly.
- It is essential to note that alendronate should be taken with plenty of water and that the patient should remain upright for at least 30 minutes after taking the medication to reduce gastrointestinal side effects.
- Patients should also be advised to take calcium and vitamin D supplements as directed by their physician. 2
From the Research
Treatment Options for Osteoporosis
The treatment of a 62-year-old female with a score of -2.6, indicating osteoporosis, can involve several options, including bisphosphonates and denosumab.
- Bisphosphonates are antiresorptives that target the osteoclast and inhibit bone resorption, and are considered a first-line therapy for osteoporosis due to their efficacy in decreasing fracture risk and favorable safety profile 3.
- Denosumab is an alternative that achieves greater suppression of bone turnover and greater increases of bone mineral density (BMD) at all skeletal sites, and may be preferred in patients with impaired renal function 4.
Comparison of Denosumab and Bisphosphonates
Studies have compared the efficacy of denosumab and bisphosphonates in patients with osteoporosis.
- A meta-analysis of randomized controlled trials found that denosumab increased BMD more than bisphosphonates at 12 and 24 months, but there was no difference in fracture end point at 12 months 5.
- A systematic review found that denosumab improved bone strength significantly more than bisphosphonate treatment at the lumbar spine, total hip, and femoral neck at 12 and 24 months, but there were no significant differences in side effects 6.
Considerations for Treatment
When considering treatment options, it is essential to take into account the patient's individual characteristics, such as renal function and potential side effects.
- Denosumab should be preferred in patients with impaired renal function 4.
- Bisphosphonates are embedded in the bone and continue to act for years after their discontinuation, whereas denosumab discontinuation fully and rapidly reverses its effects on bone markers and BMD, and increases the risk for fractures 4.