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112 active trials for Osteoporosis

Exploring Efficacy, Cost Effectiveness and Experiences Related to Adherence of Different Bisphosphonate Regimens for the Prevention of Osteoporotic Fragility Fractures.

Osteoporosis is a condition where bones become weak and fragile and can easily break. Suffering from one fragility fracture doubles your chance of having another. These fractures can affect a person's life significantly and contribute to significant costs to the UK (United Kingdom) health service. Bisphosphonates are used to treat osteoporosis and help prevent fractures. The most commonly used bisphosphonate treatment is Alendronate, but taking it correctly is complicated and side-effects are common. Therefore only 1 in 4 people continue with Alendronate beyond 2 years. There are different forms of bisphosphonates that can be given in different ways and frequencies and may be more acceptable and tolerated by patients. The study will look at how effective different bisphosphonate regimens are compared to Alendronate at preventing fractures, whether the reduction in fracture risk can be achieved at reasonable financial cost and establish acceptability of different approaches to patients. The study will be completed in 2 stages, Stage 1A and Stage 1B in parallel, followed by Stage 2. Stage 1A will update a systematic review to inform which regimens are most effective at reducing fractures and provide the best value for money. Stage 1B will consist of qualitative, semi-structured interviews from a sample of stakeholders in receipt of or involved in the delivery of different bisphosphonate regimens, in order to identify which bisphosphonate regimens are most acceptable to patients and the barriers to effective compliance and adherence. Stage 2 will use focus groups and workshops with stakeholders and commissioners to discuss uncertainties from Stage 1 and identify the most important outstanding questions for future research.

Start: March 2020
Effects of Teriparatide (PTH) on Bone in Men and Women With Osteoporosis

Teriparatide (PTH) is the only bone formation therapy that has been approved for the treatment of postmenopausal osteoporosis in Canada. Osteoporosis is currently diagnosed using a bone mineral density (BMD) scan, which measures the amount of mineral (calcium etc) in bones (the higher the amount of mineral, the lower the fracture risk). Although BMD is linked to bone strength and is used to measure fracture risk, it does not give information on bone structure (called bone geometry) which can also tell us a great deal about fracture risks. Clinical trials have shown that teriparatide increases BMD at the lumbar spine and total hip, while BMD at the forearm may decrease after 20 months of therapy. However, bone biopsies of the pelvis done on people taking teriparatide show improvement of bone geometry (ie bone thickness and increased trabeculae (small interconnecting rods of bone), suggesting that a change in bone geometry at the wrist may be occurring as well. Currently, there is a new technology, high resolution pQCT (HR-pQCT) that can assess bone geometry without a biopsy. Since bone strength is affected both by BMD and bone structure (as well as other material properties), our group is interested in examining changes in bone geometry at the radius and tibia in men and women with osteoporosis who receives 24 months of teriparatide therapy. The investigators believe that this new approach of measuring bone strength will help us better understand the mechanisms of therapeutic efficacy of teriparatide. In addition, measuring indices of bone strength such as the material composition (bone mineral content or BMD) and structural properties of bone (size and shape, and microarchitecture) may provide more data about the mechanisms of how teriparatide treatment can decrease fracture risk. In the end, this data will benefit and improve patient care by allowing us to show patients and their providers that whether BMD increases, decreases or stay the same, there are changes in their bone geometric structure with teriparatide therapy that increases bone strength.

Start: November 2004
Teriparatide (PTH) and Bone Strength in Postmenopausal Women

This study will investigate the effects on bone quality of a medication (Teriparatide) used to treat people with severe osteoporosis. Teriparatide is the only bone formation therapy that has been approved for the treatment of postmenopausal osteoporosis in Canada. Osteoporosis is currently diagnosed using a bone mineral density (BMD) scan, which measures the amount of mineral (calcium etc) in bones (the higher the amount of mineral, the lower the fracture risk). Although BMD is linked to bone strength and is used to measure fracture risk, it does not give information on bone structure (called bone geometry) which can also tell us a great deal about fracture risks. Clinical trials have shown that teriparatide increases BMD at the lumbar spine and total hip, while BMD at the forearm decreases after 20 months of therapy. Whether this decrease of BMD at the forearm suggests a higher risk of wrist fracture or a change in bone structure is unclear. Bone biopsies of the pelvis done on people taking teriparatide shows improvement of bone geometry (ie bone thickness and increased trabeculae (small interconnecting rods of bone), suggesting that a change in bone geometry at the wrist may be occurring as well. Currently, there is a new technology, high resolution pQCT (HR-pQCT) that can assess bone geometry without a biopsy. Since bone strength is affected both by BMD and bone structure (as well as other material properties), our group is interested in examining changes in bone geometry at the forearm (a non-weight bearing site) and ankle (a weight bearing site) in postmenopausal women with osteoporosis who receive 24 months of teriparatide therapy. The investigators believe that this new approach of measuring bone strength will help us better understand whether teriparatide has different effects at different bone sites.

Start: June 2008
C-STOP Fracture Trial

The objective of the proposed research is to improve quality of care for older outpatients who present to Emergency Departments and Fracture Clinics with an osteoporosis-related wrist or other upper extremity fracture. Although most of these patients warrant evidence-based and guideline-recommended osteoporosis testing and treatment, numerous studies demonstrate treatment rates less than 10-20% in the year post-fracture. Several trials, including the investigators own prior studies, have tried to address this osteoporosis care-gap and have reported that various multifaceted interventions (combinations of patient and physician education, guidelines, and physician reminders) can modestly improve treatment rates compared with usual care, although 60-70% of the patients exposed to these interventions still remain untreated. The investigators believe that a case-manager (who identifies and independently sees patients in clinic, arranges bone mineral density [BMD] tests, and offers guideline-based treatment to those with low BMD) represents a potential solution that holds great promise. The investigators hypothesize that an osteoporosis case-manager will effectively and efficiently increase rates of osteoporosis treatment in older outpatients with upper extremity fractures when compared with a documented effective and cost-saving multifaceted intervention. To test this hypothesis the investigators propose a pragmatic patient-level randomized controlled comparative effectiveness trial with blinded outcomes ascertainment that compares the case-manager strategy with the multifaceted intervention.

Start: September 2012