Bone Abstracts

Background: Turner syndrome (TS) is associated with decreased bone mineral density and altered bone geometry, which is assumed a risk factor leading to increased fracture rate. Although hypogonadism or SHOX gene haploinsufficiency are the probable causes, the exact mechanism remains unclarified. Particularly, the muscle function as an important determinant of bone strength has yet not been focused on in TS.Objective: We tested the hypothesis that there i...

Introduction: Physical exercises improve muscle strength, aerobic capacity and bone density in patients with rheumatoid arthritis (RA). However, some physicians fear to recommend the intensive exercises. The aim of the study is to compare the efficacy of two 6-month exercise programs in patients with early RA.Methods: Fifty-one patients with early RA were randomized into 3 groups. At hospital stage 15 patients underwent ten high-intensity dynamic exercis...

The aim of our study was to evaluate the anthropometric characteristics in postmenopausal women depending on appendicular skeletal mass.Materials and methods: We’ve examined 8882 women aged 20–89 years (mean age – 56.7±0.14 years; mean height – 162.5±0.07 cm; mean weight – 73.5±0.16 kg), among them anthropometric measures were performed in 79 postmenopausal women aged 40–82 years (mean age – 63.53±1....

The aim of the study was to evaluate the peculiarities of body composition in postmenopausal women depending on bone mineral density (BMD).Materials and methods: We’ve examined 8882 women aged 20–89 years (mean age – 56.7±0.14 years; mean height – 162.5±0.07 cm; mean weight – 73.5±0.16 kg). Anthropometric measures were performed in 80 postmenopausal women aged 40–82 years (mean age – 63.53±1.08 years...

Sarcopenia and osteoporosis are common in later life, often coexist, and increase the risk of adverse health outcomes such as disability, falls and fracture. Binkley and colleagues recently devised a score-based system for the diagnosis of ‘dysmobility syndrome’ in an attempt to combine adverse musculoskeletal phenotypes and indentify older individuals at particular risk. We applied these criteria to a larger cohort of participants from the Hertfordshire Cohort Study...

Most studies using botulinum toxin A (BTX) to achieve skeletal unloading use a study period of 3–4 weeks. The aim was to prolong this study time and to investigate the influence on the bone microstructure including the relationship between the thickness of horizontal and vertical trabeculae. Fifty-seven 16-week-old female Wistar rats were randomized into six Groups: Base; Ctrl 4w; and BTX4 4w; Ctrl 8w; BTX4 8w; BTX4+2 8w. The BTX animals were injected with 4 IU at baselin...

Background: Among body composition phenotypes there is no consensus on definition and consequences of sarcopenic obese phenotype. The recommended method to quantify the muscle mass is the dual energy X-ray absorptiometry (DXA), based on measurement of total fat mass and appendicular lean mass. A high BMI may provide a great bone mineral density (BMD) in many individuals, but it does not guarantee optimal bone strength. The aim of our study is to investigate the influence of sa...

Purpose: The purpose of the present study was to characterize the extent of sarcopenia among orthopaedic surgery patients.Methods: This retrospective cross-sectional study identified 222 patients immediately after or before an orthopaedic surgery including elective total hip and knee arthroplasty and hip fracture surgery at a single institution. 364 patients from an outpatient department who did not have an orthopaedic surgery were also examined as a con...

Peripheral computed tomography (pQCT) can estimate volumetric bone mineral density (vBMD) and distinguish trabecular from cortical bone. Few comprehensive studies have examined correlates of vBMD in Spanish premenopausal women.The aim was to study the association between bone microarchitecture, muscle mass and strength in premenopausal Spanish women and to evaluate the role of calcium intake. vBMD was assessed in 164 premenopausal women at the distal rad...

Background: Sarcopenic obesity is usually defined by the combination of sarcopenia and obesity but there is not a standard definition yet. The recommended method for the quantification of muscle mass is dual energy X-ray absorptiometry (DXA), based on assessment of total fat mass and appendicular lean mass. Low Body Mass Index (BMI) used to be considered as a risk factor for fragility fracture. However, recent evidences have demonstrated a correlation between BMI and vertebral...

Method: The aim of this retrospectively study was to ascertain trends in the incidence of hip fracture, resulting from traumas of low intensity (fall of same high), in age over 50 years old, using register information from University Hospital of Los Andes (Merida Venezuela) theatre records. There was a total of 404 fractures of the proximal femur, which affected 293 women’s and 111 men’s, the overall female:male ratio was 2.64:1. The average standardized incidence pe...

Vertebral fractures are one of the most common and disabling manifestation in osteoporosis. The relationship between bone mass and muscle strength has already been shown in the literature, but only a few studies argues the relationship between BMD and erector spinae muscles. Simple biomechanical considerations suggest that the loss of trunk muscle mass may contribute in vertebral fractures. In the literature, the Soerensen and isokinetic tests are often reported for t...

Obesity is associated with greater risk of proximal humerus and ankle fracture, despite greater areal BMD (aBMD). We aimed to investigate whether greater risk of some fractures in obesity was due to skeletal or non-skeletal determinants. 100 individually-matched pairs of normal weight (NW) (18.5–24.9 kg/m2) and obese (OB) (BMI >30 kg/m2) individuals, aged 25–40 and 55–75 years underwent DXA to determine hip and lumbar spine aBMD, whole ...

Context: Impairment of muscle function and strength in patients with primary hyperparathyroidism (PHPT) is rarely addressed although decreased muscle function may contribute to increased fracture risk in PHPT.Objective: We aimed to assess changes in muscle strength, muscle function, postural balance, quality of life (QoL), and well-being during treatment with vitamin D or placebo before and after parathyroidectomy (PTX) in PHPT patients.<p class="abs...

Estrogen deficiency promotes bone loss and skeletal muscle dysfunction. Peroxisome proliferator-activated receptor (PPAR) agonists and high-impact exercise both affect musculoskeletal properties. Whereas PPARδ agonists ameliorate training response in muscle, PPARα agonists exert beneficial effects in bone and muscle. In the present study we investigated the effects of the PPARα agonist fenofibrate and high-impact jumping exercise alone and combined in ovariectom...

It has been recently reported that, after physical exercise activity, the skeletal muscle releases Irisin, the newly identified myokine able of driving transition of white adipocytes to brown, following a phenomenon known as the browning response. This result has suggested that skeletal muscle is crucial in the regulation of energy homeostasis, supporting the idea that it can be considered an endocrine organ that targets adipose tissue by promoting energy expenditure. In accor...