Open Access. Powered by Scholars. Published by Universities.®

Rehabilitation and Therapy Commons™

Open Access. Powered by Scholars. Published by Universities.®

Medical Specialties

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 991 - 1020 of 1344

Full-Text Articles in Rehabilitation and Therapy

Predictors Of Success On The Board Of Certification Exam, Andrea Cripps, Sara Stiltner, Elizabeth J. Walters, Adam Fullenkamp, Matt Laurent May 2018

Predictors Of Success On The Board Of Certification Exam, Andrea Cripps, Sara Stiltner, Elizabeth J. Walters, Adam Fullenkamp, Matt Laurent

Journal of Sports Medicine and Allied Health Sciences: Official Journal of the Ohio Athletic Trainers Association

In Volume 4, Issue 1 of the JSMAHS you will find Professional research abstracts, as well as Under Graduate student research abstracts, case reports, and critically appraised topics.

Thank you for viewing this 4th Annual OATA Special Edition.


This research is sponsored by an OATA Research Grant


Assistive Utensil: A Spork For Hand Tremors And Spatial Awareness, Ana Font Hernandez, Jacob Kabariti, Troy Taylor May 2018

Assistive Utensil: A Spork For Hand Tremors And Spatial Awareness, Ana Font Hernandez, Jacob Kabariti, Troy Taylor

Publications and Research

In this poster, we present a 3D printed solution for hand tremors and special awareness. Our spork is an assistive device designed and 3D printed for patients suffering from scleroderma, systemic sclerosis, Parkinson's, multiple sclerosis, drug withdrawal, etc. The scale-based handle will act as a counterweight to offset the contents on the other end and reduce shakiness. The larger grip allows an easy and comfortable hold. The product will be 3D printed for a customizable fit and at an affordable price. Lastly, the product will include a haptic feedback sensor to assist the visually impaired in locating food contents on …


Performance Of The Promis In Patients After Anterior Cruciate Ligament Reconstruction, Elizabeth J. Scott, Robert Westermann, Nathalie A. Glass, Carolyn Hettrich, Brian R. Wolf, Matthew J. Bollier May 2018

Performance Of The Promis In Patients After Anterior Cruciate Ligament Reconstruction, Elizabeth J. Scott, Robert Westermann, Nathalie A. Glass, Carolyn Hettrich, Brian R. Wolf, Matthew J. Bollier

Orthopaedic Surgery and Sports Medicine Faculty Publications

Background: The Patient-Reported Outcomes Measurement Information System (PROMIS) is designed to advance patient-reported outcome (PRO) instruments by utilizing question banks for major health domains.

Purpose: To compare the responsiveness and construct validity of the PROMIS physical function computer adaptive test (PF CAT) with current PRO instruments for patients before and up to 2 years after anterior cruciate ligament (ACL) reconstruction.

Study Design: Cohort study (diagnosis); Level of evidence, 2.

Methods: Initially, 157 patients completed the PROMIS PF CAT, Short Form-36 Health Survey (SF-36 physical function [PF] and general health [GH]), Marx Activity Rating Scale (MARS), Knee injury and Osteoarthritis Outcome …


Age-Related Changes In Visual Processing Speed: A Pilot Study Using The Motor Free Visual Perception Test- 4, Amber Zadravecz, Kassidy Ha, Lauren Gollnick, Stephanie Pawek, Zoe Studer May 2018

Age-Related Changes In Visual Processing Speed: A Pilot Study Using The Motor Free Visual Perception Test- 4, Amber Zadravecz, Kassidy Ha, Lauren Gollnick, Stephanie Pawek, Zoe Studer

Dissertations, Masters Theses, Capstones, and Culminating Projects

Older adults are at a significantly increased risk of being involved in motor vehicle accidents. Evidence reveals that visual processing speed decreases with age, which may impact driving. The Motor-Free Visual Perception Test- Third Edition (MVPT-3) is used as a pre-driving assessment and has an age-normed Response Time Index that measures visual processing speed. In 2015, a new version, the new Motor-Free Visual Perception Test- Fourth Edition (MVPT-4), was published. The new MVPT-4 does not yet demonstrate its utility in measuring visual processing speed. The purpose of this study was to explore if differences in visual processing speed between younger …


The Effects Of An 8 Vs. 16 Week Yoga Practice On Balance, Strength, Flexibility, And Mindfulness In Children Ages 4-10 Years: A Pilot Study, Betsy Donahoe-Fillmore, Samantha Brown, Katherine Chu, Kelly Clancy, Jordan Mcmillan, Lesley Park, Kari Shank, Safiyeh Shalash May 2018

The Effects Of An 8 Vs. 16 Week Yoga Practice On Balance, Strength, Flexibility, And Mindfulness In Children Ages 4-10 Years: A Pilot Study, Betsy Donahoe-Fillmore, Samantha Brown, Katherine Chu, Kelly Clancy, Jordan Mcmillan, Lesley Park, Kari Shank, Safiyeh Shalash

University of Dayton Doctor of Physical Therapy Annual Research Symposium

Yoga has been shown to have positive benefits in: Improving cardiovascular, neuromuscular, musculoskeletal, and pulmonary function in ages 0-21 years and improving mindfulness to manage pain and anxiety in adults. There is limited evidence regarding the use of yoga to improve balance, strength, flexibility, and mindfulness in children ages 4-10 years.


Survey Of Sensory Diet Use Among California Occupational Therapy Practitioners, Morganne Peterson, Allison Hunt, Emily White May 2018

Survey Of Sensory Diet Use Among California Occupational Therapy Practitioners, Morganne Peterson, Allison Hunt, Emily White

Dissertations, Masters Theses, Capstones, and Culminating Projects

The purpose of this study was to examine the use of sensory diets in the field of occupational therapy. This study investigated the use of sensory diets among California occupational therapy practitioners. A mixed-methods design was used to collect data through an online survey. The survey was sent out to members of the Occupational Therapy Association of California (OTAC) and received 98 respondents within one month. Participants worked among various clinical settings and implemented sensory diets with various client populations. Practitioners reported using terms such as “sensory strategies,” “sensory tools,” and “sensory supports” which indicates an overall misunderstanding associated with …


Evaluating The Effectiveness Of A Formal Dementia Care Training Program: Abilities Care Experts™, Carmen Joaquin, Michelle D'Amato, April Perez, Louiza Alexandria Villarina, Sophie E. Miller May 2018

Evaluating The Effectiveness Of A Formal Dementia Care Training Program: Abilities Care Experts™, Carmen Joaquin, Michelle D'Amato, April Perez, Louiza Alexandria Villarina, Sophie E. Miller

Dissertations, Masters Theses, Capstones, and Culminating Projects

Overview: Abilities Care Experts™ (ACE™) is an educational training program for nursing staff who care for individuals with dementia in skilled nursing facilities (SNF). The objective of the program is to provide the nursing staff with knowledge, and methods to engage residents’ remaining abilities in order to maximize occupational participation using a stage-specific dementia care approach. ACE™ training has yet to be evaluated for effectiveness in a controlled study design.

Objectives: This study sought to evaluate the effectiveness of the ACE™ training.

Design: The study employed a quantitative, cross-sectional, quasi-experimental design.

Participants: A total of 29 CNAs, 13 ACE™ trained …


Resilience And Protective Factors In Older Adults, Jessica Mcclain, Katelyn Gullatt, Caroline Lee May 2018

Resilience And Protective Factors In Older Adults, Jessica Mcclain, Katelyn Gullatt, Caroline Lee

Dissertations, Masters Theses, Capstones, and Culminating Projects

Evidence suggests resilience promotes successful aging in place and protective factors promote resilience. This study sought to investigate whether or not the combination of three protective factors, physical health, social support, and self-efficacy are all of equal importance in predicting resilience among Marin County older adults, or if some individual protective factors have a greater impact on resilience than the others. Fifty-eight participants ages 62 and higher were recruited from senior community programs and personal contacts. Four self-report questionnaires were completed by the participants in this exploratory, cross-sectional, quantitative design. SPSS was used for a descriptive and multivariate analyses to …


Spinal Cord Trauma: An Overview Of Normal Structure And Function, Primary And Secondary Mechanisms Of Injury, And Emerging Treatment Modalities, Daniel Morin May 2018

Spinal Cord Trauma: An Overview Of Normal Structure And Function, Primary And Secondary Mechanisms Of Injury, And Emerging Treatment Modalities, Daniel Morin

Senior Honors Theses

The structures of the spinal cord and vertebral column are designed to provide flexibility, while still providing ample protection for the spinal cord deep within. While it does offer remarkable protection against most routine trauma, the spinal cord is still vulnerable to high-force etiologies of trauma and may become damaged as a result. These events are referred to as primary injury. Following the initial injury, the body’s own physiological responses cause a cascade of deleterious effects, known as secondary injury. Secondary injury is a major therapeutic target in mitigating the effects of spinal cord injury (SCI), and much research is …


Surgical Interventions For Distal Radius Fractures, Jake Dotseth Apr 2018

Surgical Interventions For Distal Radius Fractures, Jake Dotseth

Undergraduate Research Celebration 2018

No abstract provided.


Comparison Of Two Surgical Methods For Slap Lesions, Holly Winiarczyk Apr 2018

Comparison Of Two Surgical Methods For Slap Lesions, Holly Winiarczyk

Undergraduate Research Celebration 2018

No abstract provided.


Surgical Methods For Distal Radius Fractures, Heather Pierce Apr 2018

Surgical Methods For Distal Radius Fractures, Heather Pierce

Undergraduate Research Celebration 2018

No abstract provided.


Ot In Pediatric Primary Care, Anne H. Zachry, J. Flick Apr 2018

Ot In Pediatric Primary Care, Anne H. Zachry, J. Flick

Faculty Presentations

This session described a program where licensed occupational therapists and master’s level OT students provide free developmental screenings to infants and young children in local pediatric medical practice. Strategies for strategies for developing relationships and bridging communication between occupational therapists, primary practice physicians, and families were reviewed.


Reducing Re-Rupture With Surgery Or Conservative Treatment, Austin Mihalovic Apr 2018

Reducing Re-Rupture With Surgery Or Conservative Treatment, Austin Mihalovic

Undergraduate Research Celebration 2018

No abstract provided.


Surgery And Conservative Treatment Of The Acl-Mcl Injured Knee, Mason Mcmanimon-Myers Apr 2018

Surgery And Conservative Treatment Of The Acl-Mcl Injured Knee, Mason Mcmanimon-Myers

Undergraduate Research Celebration 2018

There is a clinical need to evaluate the effectiveness of nonoperative versus operative treatment of the anterior cruciate ligament (ACL)-medial collateral ligament (MCL) combined knee injury. The incidence of these injuries is frequent in athletic populations and requires the best treatment for optimal patient outcomes and function in day-to-day life as well as athletics. The appraisal focuses on whether or not to pair ACL reconstruction with MCL reconstruction or ACL reconstruction with MCL bracing. Focused Clinical Question: What is the effect on patients with a combined ACL-MCL injury of the knee with conservative treatment compared to surgery on patient reported …


Chemohormonal Therapy In Metastatic Hormone-Sensitive Prostate Cancer: Long-Term Survival Analysis Of The Randomized Phase Iii E3805 Chaarted Trial, Christos E. Kyriakopoulos, Yu-Hui Chen, Michael A. Carducci, Glenn Liu, David F. Jarrard, Noah M. Hahn, Daniel H. Shevrin, Robert Dreicer, Maha Hussain, Mario Eisenberger, Manish Kohli, Elizabeth R. Plimack, Nicholas J. Vogelzang, Joel Picus, Matthew M. Cooney, Jorge A. Garcia, Robert S. Dipaola, Christopher J. Sweeney Apr 2018

Chemohormonal Therapy In Metastatic Hormone-Sensitive Prostate Cancer: Long-Term Survival Analysis Of The Randomized Phase Iii E3805 Chaarted Trial, Christos E. Kyriakopoulos, Yu-Hui Chen, Michael A. Carducci, Glenn Liu, David F. Jarrard, Noah M. Hahn, Daniel H. Shevrin, Robert Dreicer, Maha Hussain, Mario Eisenberger, Manish Kohli, Elizabeth R. Plimack, Nicholas J. Vogelzang, Joel Picus, Matthew M. Cooney, Jorge A. Garcia, Robert S. Dipaola, Christopher J. Sweeney

Internal Medicine Faculty Publications

Purpose

Docetaxel added to androgen-deprivation therapy (ADT) significantly increases the longevity of some patients with metastatic hormone-sensitive prostate cancer. Herein, we present the outcomes of the CHAARTED (Chemohormonal Therapy Versus Androgen Ablation Randomized Trial for Extensive Disease in Prostate Cancer) trial with more mature follow-up and focus on tumor volume.

Patients and Methods

In this phase III study, 790 patients with metastatic hormone-sensitive prostate cancer were equally randomly assigned to receive either ADT in combination with docetaxel 75 mg/mm2 for up to six cycles or ADT alone. The primary end point of the study was overall survival (OS). Additional …


Quality Of Life During Treatment With Chemohormonal Therapy: Analysis Of E3805 Chemohormonal Androgen Ablation Randomized Trial In Prostate Cancer, Alicia K. Morgans, Yu-Hui Chen, Christopher J. Sweeney, David F. Jarrard, Elizabeth R. Plimack, Benjamin A. Gartrell, Michael A. Carducci, Maha Hussain, Jorge A. Garcia, David Cella, Robert S. Dipaola, Linda J. Patrick-Miller Apr 2018

Quality Of Life During Treatment With Chemohormonal Therapy: Analysis Of E3805 Chemohormonal Androgen Ablation Randomized Trial In Prostate Cancer, Alicia K. Morgans, Yu-Hui Chen, Christopher J. Sweeney, David F. Jarrard, Elizabeth R. Plimack, Benjamin A. Gartrell, Michael A. Carducci, Maha Hussain, Jorge A. Garcia, David Cella, Robert S. Dipaola, Linda J. Patrick-Miller

Internal Medicine Faculty Publications

Purpose

Chemohormonal therapy with docetaxel and androgen deprivation therapy (ADT+D) for metastatic hormone-sensitive prostate cancer improves overall survival as compared with androgen deprivation therapy (ADT) alone. We compared the quality of life (QOL) between patients with metastatic hormone-sensitive prostate cancer who were treated with ADT+D and those who were treated with ADT alone.

Methods

Men were randomly assigned to ADT+ D (six cycles) or to ADT alone. QOL was assessed by Functional Assessment of Cancer Therapy-Prostate (FACT-P), FACT-Taxane, Functional Assessment of Chronic Illness Therapy-Fatigue, and the Brief Pain Inventory at baseline and at 3, 6, 9, and 12 months. The …


Effects On Recovery And Neuroplasticity In Brain Injury Patients, Rebekkah Mclellan Apr 2018

Effects On Recovery And Neuroplasticity In Brain Injury Patients, Rebekkah Mclellan

Student Scholar Showcase

Abstract

According to the Centers for Disease Control, approximately 1.7 million people sustain a Traumatic Brain Injury each year, making the topic of brain plasticity and patient recovery an important area of study. An added element is understanding whether biological, social, and environmental factors can impact the recovery and plasticity of the patient’s brain.The purpose of this literature review was to evaluate if the environment surrounding an individual who has sustained a brain injury affects their recovery and neuroplasticity. The databases used for the scope of this review included LC OneSearch, Medline, EBSCOhost, and Google Scholar. Keywords included brain injury, …


Assessing Dementia And Mild Cognitive Impairment Within The Home, Kate Sobanik, Melinda Blais Apr 2018

Assessing Dementia And Mild Cognitive Impairment Within The Home, Kate Sobanik, Melinda Blais

Thinking Matters Symposium Archive

What are useful assessments which can be administered by occupational therapists for homebound adults with dementia or mild cognitive impairment that will influence practice patterns?


Does The Application Of Kinesiology Tape Aid In Increasing Venous Flow, K. Fitzgerald, Victoria Saunders Apr 2018

Does The Application Of Kinesiology Tape Aid In Increasing Venous Flow, K. Fitzgerald, Victoria Saunders

Thinking Matters Symposium Archive

Kinesiology tape has become extremely popular among athletes of all ages. It’s bright colors and the unique patterns created by the tape have gained an astonishing amount of attention. KT tape is a highly elastic tape that is advertised to increase muscle proprioception, reduce pain, and increase the space between fascial layers for higher venous flow. There has been a large amount of controversy surrounding KT tape and the placebo effects its usage may have. The purpose of this study is to determine if kinesiology tape actually increases venous flow which will result in a reduction of edema and ecchymosis …


Occupational Therapy Led Handwriting Programs In General Education, Angela Hamel, Collin Skilling Apr 2018

Occupational Therapy Led Handwriting Programs In General Education, Angela Hamel, Collin Skilling

Thinking Matters Symposium Archive

PIO: Does integrating occupational therapy led handwriting programs into a classroom’s curriculum improve overall handwriting in all children?


“Older Adults And Their Experiences With Home Care And Assisted Living”, Faith Robinson Apr 2018

“Older Adults And Their Experiences With Home Care And Assisted Living”, Faith Robinson

Thinking Matters Symposium Archive

As the state of Maine and the U.S. population at large continues to age, discussion about future care and living arrangements for older adults has become an increasingly relevant issue. Older adults are often faced with a range of options for housing, including staying in their home in their community while receiving home care services, or moving to an assisted living facility.

Currently a gap in the research exists as to the attitudes, perceptions, and lived experiences of the older adults themselves around these decisions, experiences, and the meaning of “home” in our older years. This study aims to provide …


Meditation As A Tool For Blood Pressure Management, Maggie Ray Apr 2018

Meditation As A Tool For Blood Pressure Management, Maggie Ray

Thinking Matters Symposium Archive

PURPOSE: Appraise existing evidence about meditation and blood pressure in persons with cardiac risk factors and offer evidence-based recommendations about the use of meditation in management of blood pressure


We Are The Medicine, Madalynn Wendland, Toni Speed Mar 2018

We Are The Medicine, Madalynn Wendland, Toni Speed

Interprofessional Education

We are all healers— to ourselves, each other and the world around us. Whether you are on the path of becoming a health professional, or have been in practice for a long time, this half-day workshop will help you to view healing from a holistic perspective that draws from the ancient traditions while respecting contemporary science.


Stereotactic Body Radiation Therapy For Locally Progressive And Recurrent Pancreatic Cancer After Prior Radiation, Philip Sutera, Mark E. Bernard, Hong Wang, Nathan Bahary, Steven Burton, Herbert Zeh, Dwight E. Heron Mar 2018

Stereotactic Body Radiation Therapy For Locally Progressive And Recurrent Pancreatic Cancer After Prior Radiation, Philip Sutera, Mark E. Bernard, Hong Wang, Nathan Bahary, Steven Burton, Herbert Zeh, Dwight E. Heron

Radiation Medicine Faculty Publications

Introduction: Pancreatic adenocarcinoma is an aggressive malignancy that has consistently demonstrated poor outcomes despite aggressive treatments. Despite multimodal treatment, local disease progression and local recurrence are common. Management of recurrent or progressive pancreatic carcinomas proves a further challenge. In patients previously treated with radiation therapy, stereotactic body radiation therapy (SBRT) is a promising modality capable of delivering high dose to the tumor while limiting dose to critical structures. We aimed to determine the feasibility and tolerability of SBRT for recurrent or local pancreatic cancer in patients previously treated with external beam radiation therapy (EBRT).

Materials and methods: Patients treated with …


Volumetric Modulated Arc Therapy Treatment Planning Of Thoracic Vertebral Metastases Using Stereotactic Body Radiotherapy, Matthew Mallory, Damodar Pokhrel, Rajeev Badkul, Hongyu Jiang, Christopher Lominska, Fen Wang Mar 2018

Volumetric Modulated Arc Therapy Treatment Planning Of Thoracic Vertebral Metastases Using Stereotactic Body Radiotherapy, Matthew Mallory, Damodar Pokhrel, Rajeev Badkul, Hongyu Jiang, Christopher Lominska, Fen Wang

Radiation Medicine Faculty Publications

Purpose/Objectives: To retrospectively evaluate the plan quality, treatment efficiency, and accuracy of volumetric modulated arc therapy (VMAT) plans for thoracic spine metastases using stereotactic body radiotherapy (SBRT).

Materials/Methods: Seven patients with thoracic vertebral metastases treated with noncoplanar hybrid arcs (NCHA) (1 to 2 3D-conformal partial arcs +7 to 9 IMRT beams) were re-optimized with VMAT plans using three coplanar arcs. Tumors were located between T2 and T7 and PTVs ranged between 24.3 and 240.1 cc (median 48.1 cc). All prescriptions were 30 Gy in 5 fractions with 6 MV beams treated using the Novalis Tx linac equipped with high definition …


Demographic, Presentation, And Treatment Factors And Racial Disparities In Ovarian Cancer Hospitalization Outcomes, Tomi F. Akinyemiju, Gurudatta Naik, Kemi Ogunsina, Daniel T. Dibaba, Neomi Vin-Raviv Mar 2018

Demographic, Presentation, And Treatment Factors And Racial Disparities In Ovarian Cancer Hospitalization Outcomes, Tomi F. Akinyemiju, Gurudatta Naik, Kemi Ogunsina, Daniel T. Dibaba, Neomi Vin-Raviv

Epidemiology and Environmental Health Faculty Publications

BACKGROUND: This study examines whether racial disparities in hospitalization outcomes persist between African-American and White women with ovarian cancer after matching on demographic, presentation, and treatment factors.

METHODS: Using data from the Nationwide Inpatient Sample database, 5,164 African-American ovarian cancer patients were sequentially matched with White patients on demographic (e.g., age, income), presentation (e.g., stage, comorbidities), and treatment (e.g., surgery, radiation) factors. Racial differences in-hospital length of stay, post-operative complications, and in-hospital mortality were evaluated using conditional logistic regression models.

RESULTS: White ovarian cancer patients had relatively higher odds of post-operative complications when matched on demographics (OR 1.35, 95% CI …


Exploring The Use Of The Timed Up And Go Test To Identify Patient Fall Risk In An Inpatient Geriatric Psychiatry Unit, Danielle Struble-Fitzsimmons Feb 2018

Exploring The Use Of The Timed Up And Go Test To Identify Patient Fall Risk In An Inpatient Geriatric Psychiatry Unit, Danielle Struble-Fitzsimmons

Seton Hall University Dissertations and Theses (ETDs)

Background: Patient falls during hospitalization influence healthcare costs and quality, and hospitals are mandated to complete fall risk assessments on all patients. Inpatient geriatric psychiatry units have the highest fall rates in the acute care setting, and most falls in this population occur during the mobility tasks of transfers and ambulation. The Timed Up and Go (TUG) test includes these two specific functional tasks, and has been used to predict falls in other geriatric populations, but has never been tested in an inpatient geriatric psychiatry unit. The purpose of this study was to determine if the TUG is a predictive …


Muscle Activity During Maximal Isometric Forearm Rotation Using A Power Grip, Joseph Scott Bader, Michael R. Boland, Desney Greybe, Arthur J. Nitz, Timothy L. Uhl, David A. Pienkowski Feb 2018

Muscle Activity During Maximal Isometric Forearm Rotation Using A Power Grip, Joseph Scott Bader, Michael R. Boland, Desney Greybe, Arthur J. Nitz, Timothy L. Uhl, David A. Pienkowski

Biomedical Engineering Faculty Publications

This study aimed to provide quantitative activation data for muscles of the forearm during pronation and supination while using a power grip. Electromyographic data was collected from 15 forearm muscles in 11 subjects while they performed maximal isometric pronating and supinating efforts in nine positions of forearm rotation. Biceps brachii was the only muscle with substantial activation in only one effort direction. It was significantly more active when supinating (µ = 52.1%, SD = 17.5%) than pronating (µ = 5.1%, SD = 4.8%, p < .001). All other muscles showed considerable muscle activity during both pronation and supination. Brachioradialis, flexor carpi radialis, palmaris longus, pronator quadratus and pronator teres were significantly more active when pronating the forearm. Abductor pollicis longus and biceps brachii were significantly more active when supinating. This data highlights the importance of including muscles additional to the primary forearm rotators in a biomechanical analysis of forearm rotation. Doing so will further our understanding of forearm function and lead to the improved treatment of forearm fractures, trauma-induced muscle dysfunction and joint replacements.


Ureteral Tunnel Length Versus Ureteral Orifice Configuration In The Determination Of Ureterovesical Junction Competence: A Computer Simulation Model, Carlos A. Villanueva, J. Tong, Carl A. Nelson, Linxia Gu Feb 2018

Ureteral Tunnel Length Versus Ureteral Orifice Configuration In The Determination Of Ureterovesical Junction Competence: A Computer Simulation Model, Carlos A. Villanueva, J. Tong, Carl A. Nelson, Linxia Gu

Department of Mechanical and Materials Engineering: Faculty Publications

Introduction The long-held belief that a ureteral re-implant tunnel should be five times the diameter of the ureter, as proposed by Paquin in 1959, ignores the effect of the orifice on the occurrence of reflux. In 1969, Lyon proposed that the shape of the ureteral orifice (UO) is more important than the intravesical tunnel. However, both theories missed quantitative evidence from principles of physics. The goal of the current study was to test Lyon’s theory through numerical models (i.e. to quantify the sensitivity of ureterovesical junction (UVJ) competence to intravesical tunnel length and to the UO).

Materials and methods The …