PubMed Journals Articles About "Protein Research Challenges Understanding Bone Fractures Heal" RSS

19:33 EDT 22nd March 2018 | BioPortfolio

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Showing "protein research challenges understanding bone fractures heal" PubMed Articles 1–25 of 50,000+

The Components of Bone and What They Can Teach Us about Regeneration.

The problem of bone regeneration has engaged both physicians and scientists since the beginning of medicine. Not only can bone heal itself following most injuries, but when it does, the regenerated tissue is often indistinguishable from healthy bone. Problems arise, however, when bone does not heal properly, or when new tissue is needed, such as when two vertebrae are required to fuse to stabilize adjacent spine segments. Despite centuries of research, such procedures still require improved therapeutic meth...

Bone Strength in Girls and Boys Following a Distal Radius Fracture: A 2-year HR-pQCT double cohort study.

We recently reported impaired bone strength in girls with low- to moderate-energy distal radius fractures (Fx) compared with girls with no history of forearm fractures (Non-Fx). We aimed to determine whether bone strength deficits observed at baseline were still present after two years.

Underestimation of vertebral fractures after Denosumab discontinuation.

We have read with interest the article on vertebral fractures after stopping Denosumab by Cummings SR et al. (1). Denosumab discontinuation is followed by a rebound effect with an increase of CTX above baseline values for two years and a decrease of BMD to baseline value after one year (2). Spontaneous clinical vertebral fractures, most often multiple, occur in the 8 to 16 months (median 11.2 months) following the last Denosumab injection (3). The risk of clinical vertebral fractures in the 12 months follow...

There Is No Column: A New Classification for Acetabular Fractures.

The surgical treatment of acetabular fractures relies on the understanding of fracture architecture and their classification. The Judet and Letournel classification has been the cornerstone in understanding and treating acetabular fractures. Recently, there has been growing evidence of discrepancies and incompleteness in the Judet and Letournel classification, adversely affecting its clinical use. This study describes a novel comprehensive classification system that will direct surgical approach and fixatio...

Osteoporotic Thoracolumbar Fractures-How Are They Different?-Classification and Treatment Algorithm.

Osteoporotic vertebral fractures constitute at least 50% of the osteoporotic fractures that happen worldwide. Occurrence of osteoporotic fractures make the elderly patient susceptible for further fractures and increases the morbidity due to kyphosis and pain; the mortality risk is also increased in these patients. Most fractures occur in the thoracic and thoracolumbar region and are often stable. Different descriptive and prognostic classification systems have been described, but none are universally accept...

Improved union and bone strength in a mouse model of NF1 pseudarthrosis treated with recombinant human bone morphogenetic protein-2 and zoledronic acid.

Tibial pseudarthrosis associated with Neurofibromatosis type 1 (NF1) is an orthopedic condition with consistently poor clinical outcomes. Using a murine model that features localized double inactivation of the Nf1 gene in an experimental tibial fracture, we tested the effects of recombinant human bone morphogenetic protein-2 (rhBMP-2) and/or the bisphosphonate zoledronic acid (ZA). Tibiae were harvested at 3 weeks for analysis, at which time there was negligible healing in un-treated control fractures (7% u...

Femoral head trabecular micro-architecture in patients with osteoporotic hip fractures: Impact of bisphosphonate treatment.

Bisphosphonates are effective in preventing osteoporotic fractures. However, their limited efficacy of bisphosphonates has been suggested as a result of these drugs, which prevent the resorption of bone without improving bone connectivity. The trabecular microarchitecture in patients with osteoporotic hip fractures was evaluated according to their history of bisphosphonate treatment (BT).

Indications of increased vertebral fracture risk in patients with type 2 diabetes.

We welcome the timely study by Napoli et al.((1)) . Patients with type 2 diabetes suffer from an increased risk of hip fractures in spite of normal to higher than normal bone mineral density. In contrast to hip fractures, vertebral fractures may be underdiagnosed in observational studies that rely on registry data. Registries are often based on clinical findings and examination of the spine with x-ray is only performed in cases of clinical indication or as a chance finding. The prevalence of vertebral fract...

Hemiarthroplasty for Fractures of Metastatic Bone Disease Have Different Outcomes Compared to Fractures Without Metastasis: A Matched-Pair Analysis.

Hemiarthropalsty (HA) for proximal femur fractures (PFF) has shown good results in the elderly patient population. It has also been used to treat fractures of the proximal femur in patients with metastatic bone disease (MBD). Nonetheless, complications still occur in both patient populations and their effect on 90-day costs can be a great burden to the healthcare system. Thus, the purpose of this study was to evaluate and compare the outcomes and costs of HA for PFF in patients with bone metastasis versus t...

Bisphosphonate Drug Holiday and Fracture Risk: A Population-Based Cohort Study.

Holidays from bisphosphonates (BPs) may help to prevent rare adverse events like atypical femoral fractures, but may be appropriate only if risk of osteoporosis-related fractures does not increase. Our objective was to compare the incidence of osteoporosis-related fractures among women who had a bisphosphonate (BP) holiday to those who continued use BPs. This retrospective cohort study, conducted within 4 Kaiser Permanente integrated health system regions, included 39,502 women aged ≥45 years with ≥3 ye...

Hyponatremia, Bone Mineral Density and Falls in the Elderly; results from AHAP study.

Hyponatremia (HN) can be associated with osteoporosis, falls and bone fractures in the elderly. Recent researches demonstrated different results about the correlation of HN with bone mineral density and bone fractures.

Fractures in patients with CKD-diagnosis, treatment, and prevention: a review by members of the European Calcified Tissue Society and the European Renal Association of Nephrology Dialysis and Transplantation.

Mineral and bone disease is omnipresent in patients with chronic kidney disease (CKD) and leads to a diverse range of clinical manifestations, including bone pain and fractures. The accumulation of traditional clinical risk factors, in addition to those related to CKD, enhances the risk of comorbidity and mortality. Despite significant advances in understanding bone disease in CKD, most clinical and biochemical targets used in clinical practice remain controversial, resulting in an undermanagement of bone f...

Solid Digestion of Demineralized Bone as a Method To Access Potentially Insoluble Proteins and Post-Translational Modifications.

Bone proteomics is an expanding field for understanding protein changes associated with disease as well as characterizing and detecting proteins preserved in fossil bone. Most previous studies have utilized a protocol with demineralization and extraction approach to isolate and characterize proteins from bone. Through near-complete EDTA demineralization, followed by solid digestion of the remaining bone pseudomorph, a total of 92 protein accessions were detected from dog bone. In the EDTA, 14 unique protein...

Two and Three-Dimensional CT Mapping of Hoffa Fractures.

Hoffa fractures, coronal-plane fractures involving the distal femoral condyles, are unstable, intra-articular fractures. The aim of this study was to define the location and frequency of fracture lines and comminution zones in Hoffa fractures using computed tomography (CT) mapping in both 2-dimensional and 3-dimensional contexts.

Glucose metabolism in bone.

The adult human skeleton is a multifunctional organ undergoing constant remodeling through the opposing activities of the bone-resorbing osteoclast and the bone-forming osteoblast. The exquisite balance between bone resorption and bone formation is responsible for bone homeostasis in healthy adults. However, evidence has emerged that such a balance is likely disrupted in diabetes where systemic glucose metabolism is dysregulated, resulting in increased bone frailty and osteoporotic fractures. These findings...

Patterns of menopausal hormone therapy use and hyperkyphosis in older women.

Hyperkyphosis, an exaggerated anterior curvature of the thoracic spine, is associated with poor physical function, falls, fractures, and earlier mortality. Low bone mineral density, bone loss, and vertebral fractures are strong risk factors for hyperkyphosis. Menopausal hormone therapy (HT) reverses bone loss, prevents vertebral fractures, and, therefore, we hypothesize, may reduce the risk for developing hyperkyphosis.

Hip Fractures.

Hip fractures are associated with significant morbidity and mortality and a major health problem in the United States (). Eighty percent of hip fractures are experienced by 80-year-old women. Plain radiographs usually confirm the diagnosis, but if there is a high level of suspicion of an occult hip fracture, magnetic resonance imaging or bone scan is the next step to confirm the diagnosis. Areas of the hip bone have varied bone strength and blood supply, making the femoral neck one of the most vulnerable ar...

Activated protein C suppresses osteoclast differentiation via endothelial protein C receptor, protease-activated receptor-1, sphingosine 1-phosphate receptor, and apolipoprotein E receptor 2.

Bone remodeling relies on a delicate balance between formation and resorption of bone tissues, processes in which bone-forming osteoblasts and bone-resorbing osteoclasts play central roles. Recently, we reported that anticoagulant activated protein C (APC) promotes osteoblast proliferation, but the role of the blood coagulation system in bone remodeling remains unclear. In this study, to further elucidate the relationship between bone remodeling and blood coagulation, we investigated the effect of APC on os...

Associations between trabecular bone score and vertebral fractures in patients with axial spondyloarthritis.

To compare trabecular bone scores (TBS) between axial SpA (axSpA) patients with and without vertebral fractures and investigate associations between TBS and vertebral fractures.

Development of Controlled Drug Delivery Systems for Bone Fracture-Targeted Therapeutic Delivery: A Review.

Impaired fracture healing is a major clinical problem that can lead to patient disability, prolonged hospitalization, and significant financial burden. Although the majority of fractures heal using standard clinical practices, approximately 10% suffer from delayed unions or non-unions. A wide range of factors contribute to the risk for nonunions including internal factors, such as patient age, gender, and comorbidities, and external factors, such as the location and extent of injury. Current clinical approa...

Spinal cord injury following a mild trauma in homocystinuria-related bone frailty: neurorehabilitation and education on bone health management.

Homocystinuria (HCU) is a rare autosomal recessive disease characterized by the deficiency of cystathionine β-synthetase, presenting with variable clinical features including micronutrient deficiency-related osteoporosis. Early-onset osteoporosis results in increased bone fragility, which is associated with low-impact fractures. To date, no traumatic myelopathy has ever been described in patients with HCU. This case report describes a 30-year-old male patient with HCU who was not aware that he was at high ...

Treatment of Acute Carpal Bone Fractures.

Carpal bone fractures are common hand fractures that can be complicated by concomitant damage to surrounding structures, chronic comorbidities, or delays in diagnosis. This article provides an overview of wrist anatomy, an expedited review of the athlete's presenting condition, and a systematic approach to the evaluation of the wrist. Recommended treatment plans are based on a review of the literature and an evidence-based approach to imaging studies. It is imperative that sports medicine providers be aware...


Several cross-sectional and prospective studies highlight the existence of an association between bone fractures and abdominal aortic calcifications, especially if particularly severe and independent from confounders such as aging, smoking habits and diabetes. This phenomenon affects not only the general population but also patients with chronic kidney disease in which cortical bone lesions are prevalent. Moreover, bone fractures and aortic calcifications have been proved to be linked to increased cardiovas...

Management of osteoporosis after fragility fractures.

Osteoporosis is defined as a systemic bone disease with decreased bone strength and an increased susceptibility for fractures. Older people in particular face an increased risk of fractures. These kind of fractures are usually caused by an inadequate trauma and are the so-called fragility fractures. In older adults immediate fracture stabilization and early mobilization have become the standard procedure after a fragility fracture. Treatment of the underlying osteoporosis often plays a minor role in clin...

Risk of long-term infection-related death in clinical osteoporotic vertebral fractures: A hospital-based analysis.

Osteoporotic vertebral fractures adversely impact quality of life and also increase the risk of infection and mortality. Alendronate treatment increases bone mass and reduces the risk of fractures in patients with osteoporosis by suppressing bone resorption. We investigated the relationship between alendronate treatment and infection-related death in patients with osteoporotic vertebral fractures.

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