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Clinical effectiveness of bisphosphonates for the prevention of fragility fractures: A systematic review and network meta-analysis

Clinical effectiveness of bisphosphonates for the prevention of fragility fractures: A systematic review and network meta-analysis Clinical effectiveness of bisphosphonates for the prevention of fragility fractures: A systematic review and network meta-analysis
Clinical effectiveness of bisphosphonates for the prevention of fragility fractures: A systematic review and network meta-analysis Clinical effectiveness of bisphosphonates for the prevention of fragility fractures: A systematic review and network meta-analysis

To assess the relative efficacy of bisphosphonates (alendronate, risedronate, ibandronate and zoledronic acid) for the treatment of osteoporosis using network meta-analysis (NMA).

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Key take away

Worldwide, the osteoporotic fractures are becoming a major cause of morbidity and mortality. The management of this asymptomatic condition is focused in this study. Here, the researchers have emphasized on the role of bisphosphonates in preventing the fragile fractures associated with osteoporosis.

Background

To assess the relative efficacy of bisphosphonates (alendronate, risedronate, ibandronate and zoledronic acid) for the treatment of osteoporosis using network meta-analysis (NMA).

Method

A systematic review of the literature was conducted using PRISMA guidelines. A network meta-analysis was used to determine the relative efficacy of treatments on four fracture outcomes (vertebral, non-vertebral, hip and wrist) and percentage change in femoral neck bone mineral density (BMD). Treatment effects were modelled using an exchangeable treatment effects model. Heterogeneity in treatment effects was explored by considering potential treatment effect modifiers using meta-regression. Where appropriate, inconsistency between direct and indirect evidence was assessed using node-splitting.

Result

Forty-six randomized controlled trials (RCTs) were identified. Twenty-seven RCTs provided fracture data and 35 RCTs provided BMD data for analysis. Zoledronic acid was associated with the greatest treatment effect on vertebral fractures (HR 0.41, 95% CrI: 0.28, 0.56) and percentage change in BMD (3.21, 95%: CrI 2.52, 3.86) compared to placebo. The greatest treatment effect on non-vertebral and wrist fractures was given by risedronate (HR 0.72, 95%: CrI 0.53, 0.89 and HR 0.77, 95%: CrI 0.44, 1.24, respectively). For hip fractures the greatest treatment effect was given by alendronate (HR 0.78, 95% CrI: 0.44, 1.30).

Conclusion

All treatments examined were associated with beneficial effects on fractures and femoral neck BMD relative to placebo. For vertebral fractures and percentage change in femoral neck BMD the treatment effects were statistically significant for all treatments. Pairwise comparisons between treatments indicated that no active treatment was statistically significantly more effective than any other active treatment for fracture outcomes. There was some heterogeneity in treatment effects between studies suggesting differential treatment effects according to study characteristics; however, there was no evidence of differential treatment effects with respect to gender and age.

Source:

Bone

Article:

Clinical effectiveness of bisphosphonates for the prevention of fragility fractures: A systematic review and network meta-analysis

Authors:

Jean Sanderson et al.

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