Bone Abstracts

Objectives: Dual Energy X-ray Absorptiometry (DXA) is commonly used to monitor changes in bone mineral density (BMD). Small changes in BMD can be clinically meaningful; therefore precision-error calculations are needed to estimate true changes in BMD. The few published studies of precision errors in children with cerebral palsy (CP) are diverse in terms of ethnicities and medical comorbidities. Application of these estimates is inappropriate to our particular Midwest American ...

Objectives: Examine the effects of a ramped dosage schedule of pamidronate on BMD, fracture rate and location compared to a uniform 5-course regimen. The ramping regimen is intended to alter the tendency for post-treatment fractures to occur at the juncture of pamidronate bands where stress-riser related fractures have been described.Methods: Ten non-ambulatory children (seven females) with neuromuscular disabilities who received IV pamidronate with a ta...

Objectives: Asfotase alfa (AA), an enzyme replacement therapy, is the only approved treatment for pediatric-onset hypophosphatasia (HPP). We evaluated the safety profile of AA from the clinical trial program spanning pediatric and adult patients.Methods: Safety data were pooled from 4 open-label, multicenter studies in children aged ≤3 years (study 002/003 [NCT00744042/NCT01205152]; n=11) and ≤5 years (study 010-10 [NCT01176266]; <em...

Background: The incidence and prevalence of gout have markedly increased over the last few decades in keeping with the rise in prevalence of obesity and metabolic syndrome. The management of gout in patients with associated metabolic syndrome and comorbid illnesses such as renal impairment was difficult because of limited treatment options. Recent efficacy and safety data favour lower over higher doses of colchicine, and oral corticosteroids over non-steroidal anti-inflammator...

Introduction: Cartilage intermediate layer protein (CILP) is a promising marker of osteoarthritis (OA). CILP is an extracellular matrix glycoprotein, which is produced by cartilage chondrocytes. Still, there are data that CILP could be found also in other tissues. We aimed to investigate the expression level of CILP mRNA in the synovial membrane and evaluated the associations of CILP expression with traits of radiographic knee OA (rKOA) and features of histol...

The femoral neck fractures (FNF) are one of the most common non-traumatic fractures in elderly people. Frequently the patients with fractures of this localization need surgical treatment and long-term rehabilitation. It’s widely known that FNF in patients with rheumatoid arthritis (RA) occur more often than in the population.Background: To determine the frequency of FNF in patients with RA and to characterize the patients with RA and with FNF at the...

Purpose: The purpose of this study was to scan femoral heads from cadaveric donors and investigate the microarchitecture within each femoral head comprehensively.Material and methods: Ten proximal femora was harvested from eight human cadaveric donors and these specimens were scanned using micro-computed tomography. Reconstructed batches of images were aligned along the main trabecular direction (MTD). The upper hemisphere of each femoral head was includ...

It is hypothesized that osteocytes regulate bone adaptation by sensing mechanical strains in their microenvironments and signaling net bone formation or resorption. Owing to bone’s anisotropic architecture, individual osteocytes within a bone experience varying strains under mechanical loading. Thus, to accurately determine the relationships between mechanical strain, osteocyte behavior, and bone remodeling, it is crucial to use a single-cell approach. Using an in viv...

Polynesians have higher bone mineral density and lower rate of hip fracture compared to age-matched Caucasian in New Zealand, and anecdotal evidence suggests that bones of Polynesian patients heal much faster than those of Caucasians. We compared gene expression in osteoblasts cultured form bone samples taken from patients of Polynesian and Caucasian origin, in order to identify genes and pathways that contribute to the greater density and accelerated healing of Polynesian bon...

Introduction: In spite of the frequent encounter of ‘asymptomatic’ primary hyperparathyroidism (PHPT), the patients often describe various relevant improvements postoperatively suggesting a subclinical biological effect of elevated PTH or hypercalcaemia.Materials and methods: To evaluate muscle function, postural stability, and quality of life (QoL) in untreated PHPT, we assessed maximal isometric muscle strength in upper and lower extremities,...