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Your search keyword '"Dheera, A"' showing total 27 results
Start Over Author "Dheera, A" Publisher ovid technologies (wolters kluwer health)
27 results on '"Dheera, A"'

19. S998 Endoscopic Ultrasound (EUS) Guided Fine-Needle Biopsy (FNB) Has Higher Diagnostic Yield but Similar Accuracy Than EUS Fine Needle Aspirate (FNA) for Pancreatic Neuroendocrine Tumor Grading: A Meta-Analysis

Author

Hassan Siddiki, Manik Aggarwal, Rajat Garg, Dheera Grover, Prabhat Kumar, and Amandeep Singh

Subjects
Endoscopic ultrasound, medicine.medical_specialty, Yield (engineering), Hepatology, Pancreatic neuroendocrine tumor, medicine.diagnostic_test, business.industry, Gastroenterology, medicine.disease, Fine needle biopsy, Medicine, Radiology, business, Grading (tumors), Fine-needle aspirate
Published
2021
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25. Contact Characteristics of the Subtalar Joint After a Simulated Calcaneus Fracture

Author

Allan F. Tencer, Dheera Ananthakrishnan, and Bruce J. Sangeorzan

Subjects
Facet (geometry), medicine.medical_specialty, business.industry, General Medicine, musculoskeletal system, Horizontal plane, Surgery, medicine.anatomical_structure, Cadaver, Subtalar joint, Fracture (geology), Medicine, Orthopedics and Sports Medicine, Displacement (orthopedic surgery), Contact area, business, Joint (geology), Biomedical engineering
Abstract

A simple calcaneus fracture consisting of two parts was modeled in nine fresh cadaver hindfoot specimens to assess changes in subtalarjoint contact characteristics with increasing plantar depression of the posterolateral fracture component. To perform the experiment, rods were placed in the tibial and fibular shafts of each specimen, which was mounted in a frame in neutral stance. A pneumatic cylinder was used to deliver a vertical compressive load through the rods into the foot while permitting free motion of the foot in the horizontal plane. Sealed packets of pressure-sensitive film were inserted into the anterior-middle and posterior facets of the talocalcaneal articulation, and a 700-N load was applied. After testing of the intact foot, a primary fracture line was created using a microoscillating saw. The osteotomized posterolateral component was anatomically reduced and fixed, the film inserted, and the load reapplied. The test was repeated after the posterolateral fragment was displaced 2, 5, and 10 mm in a plantar direction. The resulting pressure prints were scanned along with pressure/color density calibration strips using a flatbed scanner, and an image analysis system was used to determine contact areas within specified pressure intervals. The contact area (>0.5 MPa) of the posterior facet was significantly decreased with 2, 5, and 10 mm displacements of the posterolateral calcaneus fracture component. The ratio of high-pressure area (>5.0 MPa) to contact area in the posterior facet was significantly increased only with displacements of 5 and 10 mm. There were no significant changes in any contact parameters in the anterior-middle facet. Because of the changes in contact characteristics measured, these results suggest that a calcaneus fracture with 2 mm of fracture component displacement in the posterior facet should be reduced

Published
1995
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