No abstract available.
Apoptosis* ; Diphosphonates*

Atypical femoral fractures (AFFs) are rare adverse effects of bisphosphonate therapy. We report an unusual case of bilateral diaphyseal AFFs in an antiresorptive-naïve Singaporean Chinese female with Graves’ disease. She presented with complete right AFF requiring surgical fixation, and persistent left incomplete AFF for over four years. Femoral bowing, varus femoral geometry, and ethnic influence likely contributed to the AFFs’ formation. This case may provide insights into the pathogenesis of AFFs in high-risk Asian populations.
Diphosphonates ; Hyperthyroidism

No abstract available.
Alendronate* ; Animals ; Diphosphonates ; Rats*

No abstract available.
Diphosphonates* ; Osteoclasts* ; Tyrosine*

Much attention has been paid to the relationship between atypical femoral fractures (AFF) and use of bisphosphonates (BPs). While a significant cause-effect relationship was not established in earlier studies, more recent data shows a growing relationship between AFF and BPs use. The definition of an 'AFF' has also undergone significant changes. This review briefly summarizes the definition, pathogenesis, and management of AFF.
Bone Remodeling ; Diphosphonates ; Femoral Fractures*

OBJECTIVES: To analyze the adherence of once-yearly intravenous zolendronic acid for osteoporosis. MATERIALS AND METHODS: The subjects were 322 osteoporotic patients who received more than single infusion of zolendronic acid. On clinical assessment, we assessed adherence. The changes of bone mineral density (BMD) and bone turnover marker were measured before and after infusion. RESULTS: Reinfusion rate was 48.4% (109/225) at second infusion, and 51.3% (41/80) at third infusion. Adverse event at each time was 161 (42.1%) cases, 30 (27.5%) cases, and 8 (19.5%) cases, respectively. The measured mean BMD change was significantly increased (P-value<0.001). CONCLUSIONS: In this study, once-yearly intravenous zolendronic acid for 2 years was safe and efficacious in terms of BMD and bone turnover marker. The adherence was higher than most published studies of adherence to oral bisphosphonates, but lower than optimal. Physicians should fully explain to patients about medications and educate to improve their adherence.
Bone Density ; Diphosphonates ; Humans ; Osteoporosis

Postmenopause ; Osteoporosis ; Bone Density ; Diphosphonates

BACKGROUND

Osteogenesis imperfecta (OI) is a group of connective tissue disease characterized by propensity to fractures following minimal trauma. OI is a lifelong inheritable disease and currently has no definitive cure. Management goals are directed towards prevention of fractures, controlling the symptoms, maximizing independent mobility, and developing optimal bone mass and muscle strength. Bisphosphonates are the mainstay of pharmacologic fracture-prevention therapy for most forms of OI. The University of the Philippines-Philippine General Hospital Bisphosphonate Treatment Program for OI was started in 2006 by the Clinical Genetics Service. For more than a decade now, the program has been serving more than 50 OI patients. This study evaluated the clinical outcomes of the patients who were included in the program to add to the body of knowledge on Filipino patients with OI.

This study sought to determine the clinical outcomes of children with OI on intravenous pamidronate treatment at the Philippine General Hospital (PGH) from January 2010 to December 2018.

The study utilized a retrospective review of medical records of 24 patients diagnosed with OI on pamidronate therapy seen at the PGH from January 2010 to December 2018. Descriptive statistics were used to summarize the demographic and baseline clinical characteristics of the patients. Median annualized fracture rates before and during treatment were calculated and compared. The patient functional mobility before and during pamidronate infusion was classified accordingly based on the Gross Motor Function Classification System (GMFCS) and were compared.

Twenty-four patients, which include seven males and 17 females, with ages at the time of conduct of the study ranging from four years to 11 years, fulfilled the inclusion criteria. There were four patients with OI type I, six with OI type III, 11 with OI type IV and three with OI type V. The annualized long bone fracture rate decreased significantly from a median of 2.0/year (range 1-2.75) to 0.75/year (range 0-1) after more than a year on pamidronate infusion (pCONCLUSION

Cyclic intravenous pamidronate treatment in young children with moderate-severe OI is well tolerated and associated with reduced fracture frequency with a tendency to improvement of gross functional mobility.

Diphosphonates ; adverse effects ; Humans ; Osteonecrosis ; chemically induced

Bone Density Conservation Agents ; Diphosphonates ; Humans ; Osteonecrosis