Asymmetry After Hip Fracture: A Multi-factorial Problem

Background and Purpose: Sit-to-stand (STS) and static standing mechanics are related to fall risk and function after hip fracture. Often, these patients avoid weight bearing on the fracture side after rehabilitation. The purpose of this study was to use a novel clinically-relevant protocol to examine standing and STS vertical ground reaction force (vGRF) in light of perceptual measures of loading symmetry and muscle torque production in this population. Methods: A person post hip fracture performed 3 different STS conditions and 2 simple load-matching tasks. Motion, force plate, and perceptual data on weight distribution and load were collected. Findings: Standing and STS asymmetry were not explained by strength. A perceptual issue may be limiting performance progress in achieving symmetry. Clinical Relevance: Active task-specific training, augmented by attention to perception of movement, load, or strength, may assist in attaining symmetry in STS. Conclusion: Some patients may benefit when mechanical and perceptual performances are considered together

Sit-to-Stand Symmetry in Individuals with Hip Pathology

Hip fractures occur approximately in 300K individuals aged 65+ annually post-fall 53.3% will sustain another fall; Mortality rate \u3e 25% The sit-to-stand (STS) task is impacted by hip fractures. vGRF asymmetry with STS post-hip fracture (Houck et al.) Hip fracture side \u3c non-fractured side Asymmetry not fully explained by LE strength in hip fracture nor CV

Acute Seroconversion of Eastern Equine Encephalitis Coinfection With California Serogroup Encephalitis Virus

Eastern equine encephalitis (EEE) is a severe arboviral neuroinvasive disease with high mortality and neurological sequelae. Treatment for EEE is primarily supportive. Intravenous immunoglobulin (IVIg) and high-dose steroids have been used as empirical therapy for EEE with some case reports of benefit. We report a case of a patient who presented with encephalopathy with initial cerebrospinal spinal fluid (CSF) serology analysis showing California serogroup encephalitis virus IgG positivity. However, the rapid clinical deterioration of the patient into a comatose state prompted a second CSF serology analysis that showed seroconversion of high titer Eastern Equine Encephalitis virus IgM and positive titer of California serogroup encephalitis virus IgG. The patient completed a 5-day course of empiric IVIg without concurrent corticosteroid therapy but did not show significant clinical improvement

Canonical Strangeness and Distillation Effects in Hadron Production

Strangeness canonical ensemble for Maxwell-Boltzmann statistics is reconsidered for excited nuclear systems with non-vanishing net strangeness. A new recurrence relation method is applied to find the partition function. The method is first generalized to the case of quantum strangeness canonical ensemble. Uncertainties in calculation of the K+/pi+ excitation function are discussed. A new scenario based on the strangeness distillation effect is put forward for a possible explanation of anomalous strangeness production observed at the bombarding energy near 30 AGeV. The peaked maximum in the K+/pi+ ratio is considered as a sign of the critical end-point reached in evolution of the system rather than a latent heat jump emerging from the onset of the first order deconfinement phase transition.Comment: 20 pages, 2 figures; typos corrected, 2 references added, minor corrections in text and figure