99 research outputs found
The deuteron: structure and form factors
A brief review of the history of the discovery of the deuteron in provided.
The current status of both experiment and theory for the elastic electron
scattering is then presented.Comment: 80 pages, 33 figures, submited to Advances in Nuclear Physic
Multidimensional Conservation Laws: Overview, Problems, and Perspective
Some of recent important developments are overviewed, several longstanding
open problems are discussed, and a perspective is presented for the
mathematical theory of multidimensional conservation laws. Some basic features
and phenomena of multidimensional hyperbolic conservation laws are revealed,
and some samples of multidimensional systems/models and related important
problems are presented and analyzed with emphasis on the prototypes that have
been solved or may be expected to be solved rigorously at least for some cases.
In particular, multidimensional steady supersonic problems and transonic
problems, shock reflection-diffraction problems, and related effective
nonlinear approaches are analyzed. A theory of divergence-measure vector fields
and related analytical frameworks for the analysis of entropy solutions are
discussed.Comment: 43 pages, 3 figure
Ultrasound changes in intramuscular architecture of the quadriceps following intramedullary nailing
Ultrasound changes in intramuscular architecture of the quadriceps following intramedullary nailing
Early weightbearing and ankle mobilization after open repair of acute midsubstance tears of the achilles tendon.
PURPOSE:
To study the effects of early weightbearing and ankle mobilization after acute repair of ruptured Achilles tendon.
STUDY DESIGN:
Comparative longitudinal study.
METHODS:
Patients in group 1 were postoperatively immobilized with their ankle in gravity equinus, they were encouraged to bear weight on the operated limb as soon as possible to full weightbearing, and they received a single cast change at 2 weeks, with the ankle accommodated in an anterior splint in a plantigrade position, allowing the ankle to be plantar flexed fully but not dorsiflexed above neutral. Patients in group 2 were immobilized with their ankle in full equinus with a cast change at 2 weeks, when the ankle was immobilized in mid equinus, and at 4 weeks, when the ankle was immobilized in a plantigrade position, and they were advised to bear weight.
RESULTS:
Patients in group 1 attended fewer outpatient visits, completely discarded their crutches at an average of 2.5 weeks, and more were satisfied with the results of surgery. At ultrasonography, the average thickness of the repaired tendon was 12.1 mm, with no difference in the thickness of the ruptured tendon regardless of postoperative management. There was no significant difference in isometric strength between the two groups.
CONCLUSIONS:
Early weightbearing with the ankle plantigrade is not detrimental to the outcome of repair after acute rupture of the Achilles tendon and shortens the time needed for rehabilitation. However, strength deficit and muscle atrophy are not prevented
No adverse effect of early weight bearing following open repair of acute tears of the Achilles tendon
Lipofibromatous hamartoma of the upper extremity:a review of the radiologic findings for 15 patients
The purpose of this study was to analyze the radiologic characteristics of lipofibromatous hamartomas affecting upper limb peripheral nerves
Early weightbearing and ankle mobilization after open repair of acute midsubstance tears of the Achilles tendon
- …