14,709 research outputs found
Post-operative rehabilitation after PIP joint arthroplasty with early active motion: A retrospective review of outcomes
We present a retrospectively review of outcomes of the first fifteen patients who underwent proximal interphalangeal (PIP) joint arthroplasty and were treated using the same early active motion rehabilitation regime introduced by the therapy department at Mount Vernon Hospital. The regime utilises early motion of the PIP joint while protecting the arthroplasty with a small static splint and digit strapping to reduce lateral forces on the joint.
The notes of fifteen patients were reviewed and their outcomes presented. To evaluate the outcomes in more detail the patients were divided into three groups according to their diagnostic reason for the procedure (rheumatoid arthritis, osteoarthritis and trauma). The overall mean arc of motion at the PIP joint on discharge from therapy was 54 improved from 28 pre operatively.
The patients with the osteoarthritic PIP joints gained the largest improvement in the PIP joint arc of motion and required the least rehabilitation intervention. Patients with rheumatoid arthritis required intense rehabilitation to gain less overall PIP joint motion but still reported satisfaction with their outcome. All 15 patients experienced an improvement in their pain level and subjectively reported increased function in their affected hand.
Following this retrospective review of cases the team continue to use this regime for metal and silastic prosthesis but now routinely provide additional written information pre operatively to assist patients’ understanding of the procedure and the extent of the rehabilitation required
Universal scaling relations in molecular superconductors
Scaling relations between the superconducting transition temperature , the superfluid stiffness and the normal state conductivity
are identified within the class of molecular
superconductors. These new scaling properties hold as varies over
two orders of magnitude for materials with differing dimensionality and
contrasting molecular structure, and are dramatically different from the
equivalent scaling properties observed within the family of cuprate
superconductors. These scaling relations place strong constraints on theories
for molecular superconductivity.Comment: 4 pages, 4 figure
Balancing Local Order and Long-Ranged Interactions in the Molecular Theory of Liquid Water
A molecular theory of liquid water is identified and studied on the basis of
computer simulation of the TIP3P model of liquid water. This theory would be
exact for models of liquid water in which the intermolecular interactions
vanish outside a finite spatial range, and therefore provides a precise
analysis tool for investigating the effects of longer-ranged intermolecular
interactions. We show how local order can be introduced through quasi-chemical
theory. Long-ranged interactions are characterized generally by a conditional
distribution of binding energies, and this formulation is interpreted as a
regularization of the primitive statistical thermodynamic problem. These
binding-energy distributions for liquid water are observed to be unimodal. The
gaussian approximation proposed is remarkably successful in predicting the
Gibbs free energy and the molar entropy of liquid water, as judged by
comparison with numerically exact results. The remaining discrepancies are
subtle quantitative problems that do have significant consequences for the
thermodynamic properties that distinguish water from many other liquids. The
basic subtlety of liquid water is found then in the competition of several
effects which must be quantitatively balanced for realistic results.Comment: 8 pages, 6 figure
ACTS propagation terminal update
The activities at Virginia Polytechnic Institute and State University in preparation for the February 1993 launch of ACTS are summarized. ACTS propagation terminals (APT) are being constructed to receive the 20 and 27.5 GHz ACTS beacon signals. Total power radiometers operating at the same frequencies are integrated into the terminal for use in level setting. Recent progress and plans for APT's are reported
Unconventional Quantum Critical Points
In this paper we review the theory of unconventional quantum critical points
that are beyond the Landau's paradigm. Three types of unconventional quantum
critical points will be discussed: (1). The transition between topological
order and semiclassical spin ordered phase; (2). The transition between
topological order and valence bond solid phase; (3). The direct second order
transition between different competing orders. We focus on the field theory and
universality class of these unconventional quantum critical points. Relation of
these quantum critical points with recent numerical simulations and experiments
on quantum frustrated magnets are also discussed.Comment: 28 pages, 6 figures. Review article for Int. J. Mod. Phys.
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