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Glendon K, Blenkinsop G, Belli A, Pain MTG. Does early exercise intolerance effect time to return to play, symptom burden, neurocognition, Vestibular-Ocular-Motor (VOM) function and academic ability in acutely concussed student-athletes? Brain Inj 2024:1-11. [PMID: 38910338 DOI: 10.1080/02699052.2024.2367477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 06/08/2024] [Indexed: 06/25/2024]
Abstract
INTRODUCTION Early Exercise Intolerance (EEI) is associated with delayed recovery and longer time to Return To Play (RTP), but this has not been established.Participants; (n = 52, male n = 30) UK university-aged rugby-union student-athletes. METHODS Student-athletes completed baseline screening (July-October 2021 and 2022). The test battery was repeated within 48 h, 4, 8 and 14 days after a Sports-Related Concussion (SRC) with the Buffalo Concussion Bike or Treadmill Test to set sub-symptom heart rate threshold. Student-athletes then completed a controlled early exercise protocol in-between reassessment (days 3, 5-7 and 9-13). Those with EEI were compared to those with early-exercise tolerance. OUTCOME MEASURES Post-Concussion Symptom Scale, Immediate Post-Concussion and Cognitive Test, Vestibular-Ocular Motor Screening Tool and the Revised Perceived Academic Impact Tool. RESULTS EEI was seen throughout the initial 14-days post-SRC (23.8%, 22.4%, 25.5%. 25.0%). EEI was associated with a slower reaction time within 48 h (-0.01 (-0.030-0.043) Vs 0.06 (0.033-0.24), p = 0.004) and greater VOMS scores within 48 h; (0.00 (0.00-4.00) Vs 5.50 (2.75-9.00), p = 0.016) and 4 days (0.00 (0.00-2.00) Vs 5.00 (0.00-6.00), p = 0.044). RTP was 12.5 days longer in those with EEI at 14-days post-SRC. CONCLUSION EEI is prevalent following an SRC in university-aged student-athletes and was associated with delayed recovery and RTP.
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Affiliation(s)
- K Glendon
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - G Blenkinsop
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - A Belli
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - M T G Pain
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
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Panzera JC, Podolak OE, Master CL. Contemporary diagnosis and management of mild TBI (concussions): What you need to know. J Trauma Acute Care Surg 2024; 96:865-869. [PMID: 38696496 DOI: 10.1097/ta.0000000000004297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2024]
Abstract
ABSTRACT Concussion is a common injury in children and adolescents and is a form of mild traumatic brain injury that surgeons will see in their acute care practice. With a rapidly changing evidence base for diagnosis and management, we will focus on the importance of timely identification and diagnosis, as well as the early initiation of active management of pediatric concussion immediately after injury through recovery. This approach involves the application of targeted therapies for specific deficits identified after concussion, addressing the individual pattern of symptoms experienced by patients following concussion. We will review what is known about the underlying pathophysiology that drives the clinical manifestations of concussion, the targeted clinical assessments that can both aid in the diagnosis of concussion, as well as drive the active rehabilitation of deficits seen after concussion. The standardized approach to the return to activities will also be described, including return to learning and sports.
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Affiliation(s)
- Joseph C Panzera
- From the Sports Medicine and Performance Center, (J.C.P.); Center for Injury Research and Prevention (O.E.P.); and Sports Medicine and Performance Center, Center for Injury Research and Prevention (C.L.M.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
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Karvandi E, Helmy A, Kolias AG, Belli A, Ganau M, Gomes C, Grey M, Griffiths M, Griffiths T, Griffiths P, Holliman D, Jenkins P, Jones B, Lawrence T, McLoughlin T, McMahon C, Messahel S, Newton J, Noad R, Raymont V, Sharma K, Sylvester R, Tadmor D, Whitfield P, Wilson M, Woodberry E, Parker M, Hutchinson PJ. Specialist healthcare services for concussion/mild traumatic brain injury in England: a consensus statement using modified Delphi methodology. BMJ Open 2023; 13:e077022. [PMID: 38070886 PMCID: PMC10729241 DOI: 10.1136/bmjopen-2023-077022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023] Open
Abstract
OBJECTIVE To establish a consensus on the structure and process of healthcare services for patients with concussion in England to facilitate better healthcare quality and patient outcome. DESIGN This consensus study followed the modified Delphi methodology with five phases: participant identification, item development, two rounds of voting and a meeting to finalise the consensus statements. The predefined threshold for agreement was set at ≥70%. SETTING Specialist outpatient services. PARTICIPANTS Members of the UK Head Injury Network were invited to participate. The network consists of clinical specialists in head injury practising in emergency medicine, neurology, neuropsychology, neurosurgery, paediatric medicine, rehabilitation medicine and sports and exercise medicine in England. PRIMARY OUTCOME MEASURE A consensus statement on the structure and process of specialist outpatient care for patients with concussion in England. RESULTS 55 items were voted on in the first round. 29 items were removed following the first voting round and 3 items were removed following the second voting round. Items were modified where appropriate. A final 18 statements reached consensus covering 3 main topics in specialist healthcare services for concussion; care pathway to structured follow-up, prognosis and measures of recovery, and provision of outpatient clinics. CONCLUSIONS This work presents statements on how the healthcare services for patients with concussion in England could be redesigned to meet their health needs. Future work will seek to implement these into the clinical pathway.
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Affiliation(s)
- Elika Karvandi
- Department of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Adel Helmy
- Department of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Angelos G Kolias
- Department of Neurosurgery, University of Cambridge, Cambridge, UK
| | - Antonio Belli
- Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Mario Ganau
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Clint Gomes
- Royal Liverpool University Hospital, Liverpool, UK
- UK Sports Institute, Liverpool, UK
| | - Michael Grey
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Michael Griffiths
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
- Department of Paediatric Neurology, Alder-Hey Children's NHS Trust, Liverpool, UK
| | - Timothy Griffiths
- Department of Cognitive Neurology, Newcastle University, Newcastle Upon Tyne, UK
- Institute of Neurology, University College London, London, UK
| | - Philippa Griffiths
- Sunderland & South Tyneside Community Acquired Brain Injury Service, Northumberland Tyne and Wear NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Damian Holliman
- Department of Neurosurgery, Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | - Peter Jenkins
- Wessex Neuroscience Centre, Southampton General Hospital, Southampton, UK
- Imperial College London, London, UK
| | - Ben Jones
- Carnegie Applied Rugby Research (CARR) Centre, Leeds Beckett University-Headingley Campus, Leeds, UK
- England Performance Unit, Rugby Football League Ltd, Leeds, UK
| | - Tim Lawrence
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | | | - Catherine McMahon
- Manchester Centre for Clinical Neurosciences (MCCN), Salford Royal Infirmary, Northern Care Alliance, Liverpool, UK
| | - Shrouk Messahel
- Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK
| | - Joanne Newton
- Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Rupert Noad
- University Hospitals Plymouth NHS Trust, Plymouth, UK
| | | | - Kanchan Sharma
- Department of Neurology, North Bristol NHS Trust, Westbury on Trym, UK
| | - Richard Sylvester
- National Hospital for Neurology and Neurosurgery, London, London, UK
- Institute of Exercise and Health, University College London, London, UK
| | - Daniel Tadmor
- Carnegie School of Sport, Leeds Beckett University, Leeds, UK
- Medical, Leeds Rhinos Rugby League Club, Leeds, UK
| | | | - Mark Wilson
- Imperial College London, London, UK
- Department of Neurosurgery, Imperial College Healthcare NHS Trust, London, UK
| | - Emma Woodberry
- Department of Neuropsychology, University of Cambridge, Cambridge, UK
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Srushti Sudhir C, Sharath HV. A Brief Overview of Recent Pediatric Physical Therapy Practices and Their Importance. Cureus 2023; 15:e47863. [PMID: 38021539 PMCID: PMC10680406 DOI: 10.7759/cureus.47863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/28/2023] [Indexed: 12/01/2023] Open
Abstract
Recent years have seen a substantial increase in interest in pediatric physical therapy, which is a reflection of improvements in its methods and the rising understanding of its significance in child development and rehabilitation. This review provides a concise overview of the latest trends and techniques in pediatric physical therapy, emphasizing the integration of innovative technologies, evidence-based interventions, and holistic approaches. For children with varied developmental, congenital, and acquired disorders, the significance of early intervention and individualized treatment programs is emphasized, underlining the important influence of prompt interventions on long-term functional results and quality of life. To guarantee comprehensive and coordinated care, the study also examines the interdisciplinary character of pediatric physical therapy placing special emphasis on collaboration with families, caregivers, educators, and healthcare professionals. It also emphasizes the importance of continuing research, instruction, and lobbying to improve the effectiveness and availability of pediatric physical therapy services, eventually promoting the overall well-being of kids and their families.
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Affiliation(s)
- Chavan Srushti Sudhir
- Department of Paedatric Physiotherapy, Ravi Nair Physiotherapy College, Datta Meghe Institute of Higher Education & Research (Deemed to be University), Wardha, IND
| | - H V Sharath
- Department of Paediatric Physiotherapy, Ravi Nair Physiotherapy College, Datta Meghe Institute of Higher Education & Research (Deemed to be University), Wardha, IND
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Postconcussion Symptom Catastrophizing Scale: Preliminary Reliability and Validity Analysis of Cross-sectional Data. Am J Phys Med Rehabil 2023; 102:105-109. [PMID: 35473889 DOI: 10.1097/phm.0000000000002040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
OBJECTIVE The aim of the study was to describe cross-sectional relationships between postconcussion symptom catastrophizing and patient-level factors in a postconcussion cohort. DESIGN This cross-sectional study was conducted in an outpatient rehabilitation hospital concussion clinic and consisted of adults undergoing a neuropsychological evaluation. Cronbach α assessed internal consistency for Post-Concussion Symptom Catastrophizing Scale total scores. Pearson r correlation coefficients assessed construct validity among emotional function measures and Post-Concussion Symptom Catastrophizing Scale total scores at initial evaluation. Hierarchical regression models were used to assess criterion validity. RESULTS Excellent internal consistency was observed for Post-Concussion Symptom Catastrophizing Scale total scores (α = 0.953). The Post-Concussion Symptom Catastrophizing Scale was significantly correlated with cause of injury ( r = -0.223, P < 0.01), litigation consideration ( r = 0.309, P < 0.05), and history of psychiatric illness ( r = 0.198, P < 0.01). The Post-Concussion Symptom Catastrophizing Scale was significantly correlated with emotional functioning (Patient Health Questionnaire [ r = 0.600, P < 0.05]; Generalized Anxiety Disorder [ r = 0.602, P < 0.05]), symptom rating (Sports Concussion Assessment Tool [Fifth Edition, r = 0.477, P < 0.05]), and cognitive functioning (Repeatable Battery for the Assessment of Neuropsychological Status [ r = -0.238, P < 0.05]) measures. The final regression model explained 64.7% variance in Post-Concussion Symptom Catastrophizing Scale total scores and included the Generalized Anxiety Disorder ( b = 1.038, β = 0.466, P = 0.001) as a unique predictor. CONCLUSIONS Results indicate strong, positive relationships between anxiety and catastrophizing at initial neuropsychological evaluation in a postconcussion sample.
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Comparison of Prescribed Physical Therapy to a Home Exercise Program for Pediatric Sports-Related Concussion Patients. CHILDREN 2022; 9:children9091371. [PMID: 36138680 PMCID: PMC9497931 DOI: 10.3390/children9091371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/24/2022] [Accepted: 09/07/2022] [Indexed: 11/21/2022]
Abstract
The purpose of this retrospective chart review was to compare sports-related concussion (SRC) recovery time in protracted recovery (≥28 days) patients who were prescribed physical therapy (PPT) with those who were only provided a home exercise program (HEP). We hypothesized PPT would be associated with shorter recovery times relative to HEP. Associations were evaluated with multivariable zero-truncated negative binomial regressions. Among the 48 (30.2%) PPT and 111 (69.8%) HEP patients, the majority were female (57.9%), the mean age was 15.3 ± 1.4 (PPT) and 14.2 ± 2.8 (HEP), and time to clinic was a median 6.0 (IQR = 3.0–27.0; PPT) and 7.0 (IQR = 3.0–23.0; HEP) days. After adjusting for demographic (age, sex) and clinical measures (concussion history, convergence, VOMS, PCSS score, and days to clinic), PPT unexpectedly was associated with 1.21 (95% CI: 1.05, 1.41) additional recovery days compared with HEP. One reason for this could be related to patients adhering to the number of a priori prescribed PT sessions which may or may not have aligned with the patient’s symptom resolution. Future research should explore this hypothesis while aiming to evaluate the effect of PPT versus HEP using a randomized design. If confirmed, these findings are encouraging for patients who could not otherwise access or afford specialty rehabilitation.
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Abstract
BACKGROUND: Post-traumatic headache is the most common sequela of brain injury and can last months or years after the damaging event. Many headache types are associated with visual concerns also known to stem from concussion. OBJECTIVES: To describe the various headache types seen after head injury and demonstrate how they impact or are impacted by the visual system. METHODS: We will mirror the International Classification of Headache Disorders (ICHD) format to demonstrate the variety of headaches following brain injury and relate correlates to the visual pathways. The PubMed database was searched using terms such as headache, head pain, vision, concussion, traumatic brain injury, glare, visuomotor pathways. RESULTS: Every type of headache described in the International Classification of Headache Disorders Edition III can be initiated or worsened after head trauma. Furthermore, there is very often a direct or indirect impact upon the visual system for each of these headaches. CONCLUSION: Headaches of every described type in the ICHD can be caused by brain injury and all are related in some way to the afferent, efferent or association areas of the visual system.
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Affiliation(s)
- Patrick T. Quaid
- Head of Optometry, VUE Cubed Vision Therapy Clinics, ON, Canada
- College of Optometrists of Ontario (Regulatory Body), ON, Canada
| | - Eric L. Singman
- Ophthalmology & Visual Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
- Neurology, University of Maryland School of Medicine, Baltimore, MD, USA
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Hac NEF, Gold DR. Neuro-Visual and Vestibular Manifestations of Concussion and Mild TBI. Curr Neurol Neurosci Rep 2022; 22:219-228. [PMID: 35235169 DOI: 10.1007/s11910-022-01184-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/04/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE OF REVIEW Mild traumatic brain injury, or concussion, is a major cause of disability. Vestibular and visual dysfunction following concussion is common and can negatively affect patients' well-being and prolong recovery. Etiologies of visual and vestibular symptoms are numerous, including ocular, neuro-ophthalmic, otologic, and neuro-vestibular conditions. Some etiologies are benign and may be treatable, while others are potentially vision or life-threatening, making a focused history and examination essential. This review offers an approach to the evaluation and treatment of the most common neuro-visual and vestibular impairments that may result from concussion. RECENT FINDINGS Treatment of concussion including exercise, computerized programs, transcranial magnetic stimulation, gene therapy, stem cell therapy, and nanoparticles has shown promise. Many novel therapies are in the pipework for visual and vestibular recovery after concussion; however, the treatment mainstay remains therapy and evaluation for co-existing diseases.
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Affiliation(s)
- Nicholas E F Hac
- Department of Neurology, The Johns Hopkins School of Medicine, 600 N Wolfe St, Path 2-210, Baltimore, MD, 21287, USA.
| | - Daniel R Gold
- Department of Neurology, The Johns Hopkins School of Medicine, 600 N Wolfe St, Path 2-210, Baltimore, MD, 21287, USA
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Cheever K, McDevitt J, Phillips J, Kawata K. The Role of Cervical Symptoms in Post-concussion Management: A Systematic Review. Sports Med 2021; 51:1875-1891. [PMID: 33891292 DOI: 10.1007/s40279-021-01469-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/02/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Patients with cervicogenic symptoms following a concussion have shown a disproportionate rate of delayed symptom resolution. However, the prevalence of cervicogenic symptoms in the acute stages following a concussion and the percentage of those patients who continue on to suffer delayed symptom resolution is poorly described in the literature. OBJECTIVES To provide a comprehensive report on the clinical prevalence, diagnostic methods, and potential treatment options for cervicogenic symptoms that are elicited during acute and chronic phases following a concussion. METHODS Electronic searches were conducted in PubMed, SPORTDiscus, ICL, CINAHL and PEDro, from inception to May 2020, to identify original research articles on concussion involving cervicogenic symptoms. We assessed each included article for risk of bias, methodological quality, level of evidence and evidence quality. The articles were categorized into three topics: (1) prevalence of post-concussion cervicogenic symptoms; (2) diagnostic testing for cervicogenic symptoms, and (3) treatment techniques for cervicogenic symptoms. RESULTS The initial review resulted in 1443 abstracts, of which 103 abstracts met the inclusion criteria of our research. After the review of full text, 80 articles were excluded, which resulted in a total of 23 articles for this systematic review. Prevalence of cervicogenic symptoms in the acute stages ranged from 7 to 69% and increased to 90% in patients experiencing persistent post-concussive symptoms. Neck pain at initial evaluation increased risk of developing persistent post-concussive symptoms (PPCS) by 2.58-6.38 times. Patient-reported outcome measures (e.g., Neck Disability Index, Dizziness Handicap Inventory, and Rivermead Post-Concussion Questionnaire) can identify patients with cervicogenic symptoms that should be further differentiated by clinical testing. Lastly, treatment using graded cervical manual therapy has shown to reduce time to symptom resolution and medical clearance. CONCLUSIONS Cervicogenic symptoms are prevalent in the acute and chronic stages following concussion, which if not diagnosed appropriately increase the likelihood of PPCS. Several clinical tests are available to help differentiate cervicogenic symptoms; however, lack of awareness and hesitation by practitioners limits their use. More randomized controlled trials are necessary to evaluate the effectiveness of cervical specific treatment programs for PPCS.
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Affiliation(s)
- Kelly Cheever
- Department of Kinesiology, College for Health, Community and Policy, University of Texas at San Antonio, One UTSA cir, San Antonio, TX, 78429, USA.
| | - Jane McDevitt
- Depart of Health and Rehabilitation Science, College of Public Health, Temple University, Philadelphia, PA, USA
| | - Jacqueline Phillips
- Department of Kinesiology, College of Public, Health Temple University, Philadelphia, PA, USA
| | - Keisuke Kawata
- Department of Kinesiology, School of Public Health-Bloomington, Indiana University, Bloomington, IN, USA
- Program in Neuroscience, College of Arts and Sciences, Indiana University, Bloomington, IN, USA
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Ahluwalia R, Miller S, Dawoud FM, Malave JO, Tyson H, Bonfield CM, Yengo-Kahn AM. A Pilot Study Evaluating the Timing of Vestibular Therapy After Sport-Related Concussion: Is Earlier Better? Sports Health 2021; 13:573-579. [PMID: 33682532 DOI: 10.1177/1941738121998687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Vestibular dysfunction, characterized by nausea, dizziness, imbalance, and/or gait disturbance, represents an important sport-related concussion (SRC) subtype associated with prolonged recovery. Vestibular physical therapy promotes recovery; however, the benefit of earlier therapy is unclear. HYPOTHESIS Earlier vestibular therapy for young athletes with SRC is associated with earlier return to play (RTP), return to learn (RTL), and symptom resolution. STUDY DESIGN Retrospective cohort study. LEVEL OF EVIDENCE Level 3. METHODS Patients aged 5 to 23 years with SRC who initiated vestibular rehabilitation therapy (VRT) from January 2019 to December 2019 were included and patient records were reviewed. Therapy initiation was defined as either early, ≤30 days postinjury, or late (>30 days). Univariate comparisons between groups, Kaplan-Meier plots, and multivariate Cox proportional hazard modeling were performed. RESULTS Overall, 23 patients (10 early, 13 late) aged 16.14 ± 2.98 years and 43.5% were male patients. There was no difference between group demographics or medical history. Median initial total and vestibular symptom scores were comparable between groups. The late therapy group required additional time to RTP (110 days [61.3, 150.8] vs 31 days [22.5, 74.5], P = 0.03) and to achieve symptom resolution (121.5 days [71, 222.8] vs 54 days [27, 91], P = 0.02), but not to RTL (12 days [3.5, 26.5] vs 17.5 days [8, 20.75], P = 0.09). Adjusting for age and initial total symptom score, earlier therapy was protective against delayed symptom resolution (P = 0.01). CONCLUSION This pilot study suggests that initiating VRT within the first 30 days after SRC is associated with earlier RTP and symptom resolution. Further prospective trials to evaluate if even earlier VRT should be pursued to further improve recovery time. CLINICAL RELEVANCE Clinicians should screen for vestibular dysfunction and consider modifying follow-up schedules after SRC to initiate VRT within a month of injury for improved outcomes.
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Affiliation(s)
- Ranbir Ahluwalia
- Florida State University College of Medicine, Tallahassee, Florida.,Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Sport Concussion Center, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Scott Miller
- Vanderbilt Sport Concussion Center, Vanderbilt University Medical Center, Nashville, Tennessee.,Department of Physical Medicine and Rehabilitation, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Fakhry M Dawoud
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Sport Concussion Center, Vanderbilt University Medical Center, Nashville, Tennessee.,Quillen College of Medicine, East Tennessee State University, Mountain Home, Tennessee
| | - Jose O Malave
- Department of Physical Medicine and Rehabilitation, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Heidi Tyson
- Department of Orthopedic Surgery and Rehabilitation, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Christopher M Bonfield
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Sport Concussion Center, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Aaron M Yengo-Kahn
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Sport Concussion Center, Vanderbilt University Medical Center, Nashville, Tennessee
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