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Orthopedics Research

10:41 EST 20th November 2017 | BioPortfolio

Diagnostic accuracy of 4 intraoral radiographic techniques for misfit detection at the implant abutment joint.

A misfit or gap at the implant-abutment joint (IAJ) requires detection as it may compromise the health of the peri-implant tissue. However, which radiographic technique provides the most orthogonal relationship between the central beam and the implant/image receptor is unclear.

Sustained response to rituximab in a TNFi-induced ANCA-vasculitis developed in a patient with rheumatoid arthritis.

Celebrating thirty years of deep brain stimulation in movement disorders patients: A successful marriage between neurologists and neurosurgeons.

Prolonged stretching of the ankle plantarflexors elicits muscle-tendon adaptations relevant to ankle gait kinetics in children with spastic cerebral palsy.

Tissue related ankle hyper-resistance has been reported to contribute to equinus gait in children with spastic cerebral palsy. Hence, ankle plantarflexor stretching programs have been developed in order to restore passive ankle dorsiflexion. Despite high quality evidence on the limited effects of stretching on passive joint mobility, further muscle-tendon adaptations have been reported which may i...

Amino-bisphosphonates, γδT cells, and their roles in Rheumatoid Arthritis.

The Role of Macrophages in the Response to TNF Inhibition in Experimental Arthritis.

The reduction of synovial tissue macrophages is a reliable biomarker for clinical improvement in patients with rheumatoid arthritis (RA), and macrophages are reduced in synovial tissue shortly after initiation of TNF inhibitors. The mechanism for this initial response is unclear. These studies were performed to identify the mechanisms responsible for the initial reduction of macrophages following ...

In Vitro Maturation and In Vivo Integration and Function of an Engineered Cell-Seeded Disc-like Angle Ply Structure (DAPS) for Total Disc Arthroplasty.

Total disc replacement with an engineered substitute is a promising avenue for treating advanced intervertebral disc disease. Toward this goal, we developed cell-seeded disc-like angle ply structures (DAPS) and showed through in vitro studies that these constructs mature to match native disc composition, structure, and function with long-term culture. We then evaluated DAPS performance in an in vi...

Quantum steerability based on joint measurability.

Occupying a position between entanglement and Bell nonlocality, Einstein-Podolsky-Rosen (EPR) steering has attracted increasing attention in recent years. Many criteria have been proposed and experimentally implemented to characterize EPR-steering. Nevertheless, only a few results are available to quantify steerability using analytical results. In this work, we propose a method for quantifying the...

Risk of active tuberculosis in patients with inflammatory arthritis receiving TNF inhibitors: a look beyond the baseline tuberculosis screening protocol.

Tuberculosis (TB) is a major concern in patients receiving TNF inhibitors (TNFi). This study aimed to assess the incidence of active TB and the efficacy of TB prevention measures used over the years, and to determine risk factors for developing TB, in a single-centre cohort of patients with rheumatoid arthritis (RA), psoriatic arthritis (PsA) and ankylosing spondylitis (AS) receiving TNFi. Data of...

Correlation between quantitative pivot shift and generalized joint laxity: a prospective multicenter study of ACL ruptures.

To investigate whether an increased magnitude of quantitative rotatory knee laxity is associated with a greater level of generalized joint laxity in ACL-injured and contralateral knees.

Enhanced mu opioid receptor-dependent opioidergic modulation of striatal cholinergic transmission in DYT1 dystonia.

Mu opioid receptor activation modulates acetylcholine release in the dorsal striatum, an area deeply involved in motor function, habit formation, and reinforcement learning as well as in the pathophysiology of different movement disorders, such as dystonia. Although the role of opioids in drug reward and addiction is well established, their involvement in motor dysfunction remains largely unexplor...

Maternal mood disorders and lithium exposure in utero were not associated with poor cognitive development during childhood.

This study evaluated whether maternal mood disorders, particularly bipolar disorder, and lithium treatment during pregnancy influenced the neonatal health and cognition of children born from 2006- 2010.

Heterozygous deletion of both sclerostin (Sost) and connexin43 (Gja1) genes in mice is not sufficient to impair cortical bone modeling.

Connexin43 (Cx43) is the main gap junction protein expressed in bone forming cells, where it modulates peak bone mass acquisition and cortical modeling. Genetic ablation of the Cx43 gene (Gja1) results in cortical expansion with accentuated periosteal bone formation associated with decreased expression of the Wnt inhibitor sclerostin. To determine whether sclerostin (Sost) down-regulation might co...

Optimal design and control of an electromechanical transfemoral prosthesis with energy regeneration.

In this paper, we present the design of an electromechanical above-knee active prosthesis with energy storage and regeneration. The system consists of geared knee and ankle motors, parallel springs for each motor, an ultracapacitor, and controllable four-quadrant power converters. The goal is to maximize the performance of the system by finding optimal controls and design parameters. A model of th...

Rheumatoid arthritis patients treated in trial and real world settings: comparison of randomized trials with registries.

To investigate whether patients with RA enrolled in randomized controlled trials (RCTs) and observational studies may differ in terms of characteristics that could modify treatment effects, leading to an efficacy-effectiveness gap.

Hormone therapy and patients satisfaction with treatment, in a large cohort of diverse disorders of sex development (DSD).

To describe and investigate the hormone treatments in individuals with different forms of disorders of sex development (DSD), and the patients own views on their treatment.

International survey of practices used in the diagnosis and management of placenta accreta spectrum disorders.

To identify geographic differences in diagnostic and treatment practices during the perinatal management of placenta accreta spectrum (PAS) disorders.

NOTCH2 Hajdu-Cheney Mutations Escape SCF(FBW7)-Dependent Proteolysis to Promote Osteoporosis.

Hajdu-Cheney syndrome (HCS), a rare autosomal disorder caused by heterozygous mutations in NOTCH2, is clinically characterized by acro-osteolysis, severe osteoporosis, short stature, neurological symptoms, cardiovascular defects, and polycystic kidneys. Recent studies identified that aberrant NOTCH2 signaling and consequent osteoclast hyperactivity are closely associated with the bone-related dis...

The effect of surgical approach on gait mechanics after total hip arthroplasty.

Few studies have compared the biomechanical outcomes of different surgical approaches for hip arthroplasty. The purpose of this study was to compare hip, pelvic, and trunk kinematics and kinetics between individuals who underwent a posterior or anterolateral approach.

Dried plum alleviates symptoms of inflammatory arthritis in TNF transgenic mice.

Dried plum (DP), a rich source of polyphenols has been shown to have bone-preserving properties in both animal models of osteoporosis and postmenopausal women. We evaluated if DP alleviated the destruction of joints in transgenic mice (TG) that overexpress human tumor necrosis factor (TNF), a genetic model of rheumatoid arthritis (RA). A four-week treatment of 20% DP diet in TG slowed the onset of...

Characteristics of motor speech phenotypes in multiple sclerosis.

Motor speech disorders in multiple sclerosis (MS) are poorly understood and their quantitative, objective acoustic characterization remains limited. Additionally, little data regarding relationships between the severity of speech disorders and neurological involvement in MS, as well as the contribution of pyramidal and cerebellar functional systems on speech phenotypes, is available.

Longitudinal associations between resilience and quality of life in eating disorders.

This study examined the longitudinal reciprocal associations between resilience factors, quality of life (QoL) domains, and symptoms of eating disorders (EDs). Hypotheses included predictive paths from resilience factors of "acceptance of self and life" and "personal competence" to increased QoL and predictive paths from previous levels of QoL to resilience.

Ultrasound guided Erector Spinae Plane block at L-4 transverse process level provides effective postoperative analgesia for total hip arthroplasty.

The Treatment of Depression in Primary Care.

General practitioners play a key role in the care of patients with depressive disorders. We studied the frequency and type of treatment of depressive disorders in primary care.

Headache in Resource-Limited Settings.

This review summarizes the unmet need of headache burden and management in resource-limited settings. It provides a general overview of the nuances and peculiarities of headache disorders in resource-limited settings. The review delivers perspectives and explanations for the emerging burden of both primary and secondary headache disorders. Important discussion on demographic and epidemiologic tran...

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