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272 results on '"AARON, ROY K."'

1. Metabolic Bone Disorders Are Predictors for 2-year Adverse Outcomes in Patients Undergoing 2–3 Level Anterior Cervical Discectomy and Fusion for Cervical Radiculopathy or Myelopathy

Author

Diebo, Bassel G., Kovoor, Matthew, Alsoof, Daniel, Beyer, George A., Rompala, Alexander, Balmaceno-Criss, Mariah, Mai, David H., Segreto, Frank A., Shah, Neil V., Lafage, Renaud, Passias, Peter G., Aaron, Roy K., Daniels, Alan H., Paulino, Carl B., Schwab, Frank J., and Lafage, Virginie

Published
2023
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8. Prehabilitation and Rehabilitation for Major Joint Replacement

Author

Konnyu, Kristin J., primary, Thoma, Louise M., additional, Bhuma, Monika Reddy, additional, Cao, Wagnan, additional, Adam, Gaelen P., additional, Mehta, Shivani, additional, Aaron, Roy K., additional, Racine-Avila, Jennifer, additional, Panagiotou, Orestis A., additional, Pinto, Dan, additional, and Balk, Ethan M., additional

Published
2021
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10. Management of Garden-I and II Femoral Neck Fractures: Perspectives on Primary Arthroplasty.

Author

Olansen, Jon, Ibrahim, Zainab, and Aaron, Roy K

Subjects
HEMIARTHROPLASTY, FEMORAL neck fractures, HIP fractures, IDIOPATHIC femoral necrosis, ARTHROPLASTY, FEMUR head, FEMUR neck, TOTAL hip replacement
Abstract

This review compares internal fixation versus arthroplasty in the treatment of nondisplaced femoral neck fractures (FNFs) calling attention to evolving areas of consensus that influence clinical decision-making. The Garden classification system, typically dichotomized into nondisplaced (types I and II) and displaced (types III and IV) fractures, has been used as a guide for surgical decision-making. Conventionally, treatment of nondisplaced FNF in the elderly has been with internal fixation, and treatment of a displaced FNF has been hemi-, or more recently total hip, arthroplasty. Studies over the last decade have raised concern over the appropriate treatment of nondisplaced FNFs due to high rates of reoperation of nondisplaced FNFs treated with internal fixation. Avascular necrosis (AVN), failure of internal fixation, secondary malunion, and pin/nail penetration through the femoral head have all been observed. Several studies have attributed fixation failure to a degree of femoral neck tilt ≥ 20°, either posteriorly or anteriorly as seen on the lateral X-ray. Because of these observations of fixation failures, the suggestion has been made that arthroplasty be used when the degree of posterior tilt exceeds a threshold of ≥ 20° tilt with the expectation of diminishing failure of fixation, decreasing the risk of reoperation and preserving function without increasing mortality rate. Frustrating additional analyses are uncertainties over the mechanisms of failure of internal fixation with ≥ 20° tilt and the persistently substantial 1-year mortality rate after FNF, which has not been influenced by fixation or replacement type. Due to the lack of consensus regarding the determination of the appropriate surgical intervention for nondisplaced FNFs, an improved algorithm for surgical decision-making for these fractures may prove useful. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Rehabilitation for Total Knee Arthroplasty

Author

Konnyu, Kristin J., primary, Thoma, Louise M., additional, Cao, Wangnan, additional, Aaron, Roy K., additional, Panagiotou, Orestis A., additional, Bhuma, Monika Reddy, additional, Adam, Gaelen P., additional, Balk, Ethan M., additional, and Pinto, Dan, additional

Published
2022
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18. Prehabilitation for Total Knee or Total Hip Arthroplasty

Author

Konnyu, Kristin J., primary, Thoma, Louise M., additional, Cao, Wangnan, additional, Aaron, Roy K., additional, Panagiotou, Orestis A., additional, Bhuma, Monika Reddy, additional, Adam, Gaelen P., additional, Pinto, Dan, additional, and Balk, Ethan M., additional

Published
2022
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19. Rehabilitation for Total Hip Arthroplasty

Author

Konnyu, Kristin J., primary, Pinto, Dan, additional, Cao, Wangnan, additional, Aaron, Roy K., additional, Panagiotou, Orestis A., additional, Bhuma, Monika Reddy, additional, Adam, Gaelen P., additional, Balk, Ethan M., additional, and Thoma, Louise M., additional

Published
2022
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32. Pulsed electromagnetic fields promote repair of focal articular cartilage defects with engineered osteochondral constructs

Author

Stefani, Robert M., primary, Barbosa, Sofia, additional, Tan, Andrea R., additional, Setti, Stefania, additional, Stoker, Aaron M., additional, Ateshian, Gerard A., additional, Cadossi, Ruggero, additional, Vunjak‐Novakovic, Gordana, additional, Aaron, Roy K., additional, Cook, James L., additional, Bulinski, J. Chloë, additional, and Hung, Clark T., additional

Published
2020
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38. Correspondence

Author

Scully, Sean P., Urbaniak, James R., and Aaron, Roy K.

Published
2000

44. Diagnosis and Management of Hip Disease : Biological Bases of Clinical Care / edited by Roy K. Aaron.

Author

Aaron, Roy K. editor., SpringerLink (Online service), Aaron, Roy K. editor., and SpringerLink (Online service)

Abstract

Presenting recent advances in clinical diagnosis and treatment derived from an increased understanding of the biology of the hip, this unique text examines hip disease and pathophysiology through the lenses of kinematics, biomechanics, anatomy and metabolism. Opening chapters examine the impact of health care organization on hip care and prevalence and burden of osteoarthritis.Biomechanical considerations of the hip and gait pathomechanics in hip disease are then discussed, followed by chapters covering femoroacetabular impingement,possible links between OA and metabolic syndrome, osteonecrosis, osteoporosis and Paget’s disease.Considerations of risk reduction surrounding hip arthroplasty conclude the text, including device and surgical options for THA, hip sepsis and prevention of perioperative infection, and management of venous thromboembolism. Taken together, this represents a new and important context for the discussions and management of hip disease for orthopedic surgeons and researchers alike.

Published
2015

47. Preface: The Fracture Liaison Service.

Author

LITTMAN, JAKE and AARON, ROY K.

Subjects
*BONE fractures, *MEDICAL care
Abstract

An introduction to articles in the issue is presented on topics including osteoporosis and fragility fractures, clinical classifications, presentations, pathophysiologies, and treatment modalities for various osteomalacias, and spectrum of disorders characterized by the overproduction of plasma B-cells and immunoglobulin known as monoclonal gammopathies.

Published
2022

49. Assessment of Bone Perfusion with Contrast-Enhanced Magnetic Resonance Imaging: Imaging of Bone Marrow Edema Associated with Osteoarthritis and Avascular Necrosis

Author

Lee, Jonathan H., Dyke, Jonathan P., Ballon, Douglas, Ciombor, Deborah McK., Tung, Glenn, and Aaron, Roy K.

Subjects
Adult, Gadolinium DTPA, Knee Joint, Guinea Pigs, Contrast Media, Article, Osteoarthritis, Hip, Diagnosis, Differential, Young Adult, Animals, Edema, Humans, Bone Marrow Diseases, Aged, Aged, 80 and over, Osteonecrosis, Femur Head, Syndrome, Middle Aged, Osteoarthritis, Knee, Magnetic Resonance Imaging, eye diseases, Disease Models, Animal, Injections, Intravenous, sense organs, Follow-Up Studies
Abstract

Osteoarthritis and avascular necrosis are common clinical entities with unknown etiologies. Recently, vascular changes have been implicated in the pathogenesis of both conditions. This review discusses the use of novel non-invasive imaging techniques, using dynamic contrast-enhanced magnetic resonance imaging, as a means of assessing bone perfusion and therefore quantifying differences seen in both osteoarthritis and avascular necrosis. We have found changes in fluid dynamics in both osteoarthritis and avascular necrosis as compared to normal bone as well as changes between osteoarthritis and avascular necrosis. Review of our human data suggest that the magnetic resonance imaging contrast dye is retained for longer periods of time, suggesting decreased perfusion out of regions of osteoarthritis and avascular necrosis. This finding was corroborated in a guinea-pig animal model of osteoarthritis. Use of such a non-invasive measure of assessing bone perfusion could be useful in the diagnosis, prevention, and treatment of not only osteoarthritis and avascular necrosis but many other entities that affect the musculoskeletal system.

Published
2009

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