Any of a class of drugs that decrease bone resorption by inhibiting osteoclasts, used in the treatment of osteoporosis, Paget's disease, bone metastases, and other conditions. Also called diphosphonate.
AMSTERDAM--Older women on bisphosphonate treatment for at least 3 years who then stopped taking the drug showed a 40% increased risk for hip fracture after they were off the bisphosphonate for more than 2 years, compared with women who never stopped using the drug, according to an analysis of more than 150,000 women in a Medicare database.
Bisphosphonate drugs, such as alendronate (Fosamax), ibandronate (Boniva) and zoledronic acid (Reclast), are proven to combat bone loss and fractures in people with the bone-thinning disease osteoporosis.
Several large, population-based, case-control studies have found a temporal relationship between bisphosphonate therapy and a statistically significant increased risk of subtrochanteric fractures.
Bisphosphonates are specific inhibitors of osteoclastic activity and they reduce pathological fractures, skeletal related events and pain, and improve the quality of life in patients with metastatic cancers and multiple myeloma.1,2 Although usage of bisphosphonates is thought to be safe, in 2003, Marx and Stern reported the Bisphosphonate related osteonecrosis of the jaws (BRONJ).3 Nomenclature of this phenomenon changed as medication related osteonecrosis of the jaws (MRONJ ) in 2014.
The vast majority of atypical femur fractures are seen after long-term bisphosphonate use, and many doctors now recommend a five-year limit for taking them, with a periodic assessment of whether the drug is still necessary.
All randomized or prospective matched controlled trials that assessed the efficacy of bisphosphonate for elderly patients with hip fracture were included.
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