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Shumski EJ, Eagle SR, Kontos AP, Bazarian JJ, Caccese JB, Chrisman SPD, Clugston JR, McAllister TW, McCrea M, Broglio SP, Lynall RC, Schmidt JD. The Interval Between Concussions Does Not Influence Time to Asymptomatic or Return to Play: A CARE Consortium Study. Sports Med 2024; 54:2185-2197. [PMID: 38671175 DOI: 10.1007/s40279-024-02015-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/27/2024] [Indexed: 04/28/2024]
Abstract
INTRODUCTION The purpose of this study was to determine if the time interval between two concussive events influences the number of days to asymptomatic status, days to return to play, or performance on common post-concussion assessments following the second concussion. METHODS Data from 448 collegiate athletes and service academy cadets with two concussions (time between concussions: median 295.0 days [interquartile range: 125.0-438.2]), 40.0% female) were analyzed from Concussion Assessment Research and Education (CARE) Consortium institutions between 2014 and 2020. Days between concussions was the primary predictor variable. Primary outcome measures included time to asymptomatic and time to return to play following the second concussion. Secondary outcome measures included total number of symptoms, total symptom severity, Balance Error Scoring System total score, and Standardized Assessment of Concussion total score within 48 h of their second concussion. RESULTS Time between concussions did not significantly contribute to the multivariate time to asymptomatic (p = 0.390), time to return to play (p = 0.859), or the secondary outcomes (p-range = 0.165-0.477) models. Time to asymptomatic (p = 0.619) or return to play (p = 0.524) did not differ between same-season and different-season concussions. Sex significantly contributed to the return to play (p = 0.005) multivariate model. Delayed symptom onset and immediate removal from play/competition significantly contributed to the total number of symptoms (p = 0.001, p = 0.014) and symptom severity (p = 0.011, p = 0.022) multivariate models. CONCLUSION These results suggest that in a population with a large period between injuries, the time between concussions may not be relevant to clinical recovery.
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Affiliation(s)
- Eric J Shumski
- UGA Concussion Research Laboratory, Department of Kinesiology, Ramsey Student Center, University of Georgia, 330 River Rd., Athens, GA, 30602, USA.
| | - Shawn R Eagle
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Anthony P Kontos
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jeffrey J Bazarian
- Department of Emergency Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Jaclyn B Caccese
- The Ohio State University Chronic Brain Injury Program, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Sara P D Chrisman
- Division of Adolescent Medicine, University of Washington, Seattle, USA
| | - James R Clugston
- Department of Community Health and Family Medicine, University of Florida, Gainesville, FL, USA
| | - Thomas W McAllister
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | | | - Steven P Broglio
- Michigan Concussion Center, University of Michigan, Ann Arbor, MI, USA
| | - Robert C Lynall
- UGA Concussion Research Laboratory, Department of Kinesiology, Ramsey Student Center, University of Georgia, 330 River Rd., Athens, GA, 30602, USA
| | - Julianne D Schmidt
- UGA Concussion Research Laboratory, Department of Kinesiology, Ramsey Student Center, University of Georgia, 330 River Rd., Athens, GA, 30602, USA
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Hohmann E, Bloomfield P, Dvorak J, Echemendia R, Frank RM, Ganda J, Gordon L, Holtzhausen L, Kourie A, Mampane J, Makdissi M, Patricios J, Pieroth E, Putukian M, Janse van Rensburg DC, Viviers P, Williams V, de Wilde J. Return to Sports Following Sports-Related Concussion in Collision Sports: An Expert Consensus Statement Using the Modified Delphi Technique. Arthroscopy 2024; 40:460-469. [PMID: 37414106 DOI: 10.1016/j.arthro.2023.06.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 06/05/2023] [Indexed: 07/08/2023]
Abstract
PURPOSE To perform a Delphi consensus for return to sports (RTS) following sports-related concussion (SRC). METHODS Open-ended questions in rounds 1 and 2 were answered. The results of the first 2 rounds were used to develop a Likert-style questionnaire for round 3. If agreement at round 3 was ≤80% for an item, if panel members were outside consensus or there were >30% neither agree/disagree responses, the results were carried forward into round 4. The level of agreement and consensus was defined as 90%. RESULTS Individualized graduated RTS protocols should be used. A normal clinical, ocular and balance examination with no more headaches, and asymptomatic exertional test allows RTS. Earlier RTS can be considered if athletes are symptom free. The Sports Concussion Assessment Tool 5 and vestibular and ocular motor screening are recognized as useful tools to assist in decision-making. Ultimately RTS is a clinical decision. Baseline assessments should be performed at both collegiate and professional level and a combination of neurocognitive and clinical tests should be used. A specific number of recurrent concussions for season-or career-ending decisions could not be determined but will affect decision making for RTS. CONCLUSIONS Consensus was achieved for 10 of the 25 RTS criteria: early RTS can be considered earlier than 48 to 72 hours if athletes are completely symptom-free with no headaches, a normal clinical, ocular and balance examination. A graduated RTS should be used but should be individualized. Only 2 of the 9 assessment tools were considered to be useful: Sports Concussion Assessment Tool 5 and vestibular and ocular motor screening. RTS is mainly a clinical decision. Only 31% of the baseline assessment items achieved consensus: baseline assessments should be performed at collegiate and professional levels using a combination of neurocognitive and clinical tests. The panel disagreed on the number of recurrent concussions that should be season- or career-ending. LEVEL OF EVIDENCE Level V, expert Opinion.
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Affiliation(s)
- Erik Hohmann
- Medical School, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa; Department of Orthopaedic Surgery and Sports Medicine; Burjeel Hospital for Advanced Surgery, Dubai, United Arab Emirates.
| | - Paul Bloomfield
- CMO Manly Sea Eagles, NRL Team; World Rugby Concussion Consultant; Former CMO National Rugby League, Sydney, Australia
| | - Jiri Dvorak
- Department of Neurology, Spine Unit, Schulthess Clinic, Zurich, Switzerland; Former CMO FIFA
| | - Ruben Echemendia
- Psychological & Neurobehavioral Associates, State College, Pennsylvania, U.S.A.; Department of Psychology, University of Missouri, Kansas City, Missouri, U.S.A.; Co-Chair NHL/NHLPA Concussion Subcommittee; Chair Major League Soccer Concussion Committee
| | - Rachel M Frank
- Department of Orthopaedic Surgery, University of Colorado Medical School, Aurora, U.S.A.; Head Team Orthopaedic Surgeon Colorado Rapids, Team Physician University of Colorado Buffaloes, U.S. Soccer Network Physician
| | - Janesh Ganda
- Sports Rehab Centre, Cape Town, South Africa; Team Physician SA 7's Rugby Team; Medical Officer South African Sports Association and Olympic Committee
| | - Leigh Gordon
- Cape Sports Med Clinic, Cape Town, South Africa; Department of Sports & Exercise Medicine, Cape Town South Africa; World Rugby Concussion Consultant, Team Physician Rugby 7s, MO International Hockey Federation; Former Team Physician 7's Rugby
| | - Louis Holtzhausen
- Chief of Sports Medicine, Director Aspetar Sports Related Concussion Program; Orthopaedic and Sports Medicine Hospital, Aspetar, Doha, Qatar; Section Sports Medicine, University of Pretoria, Faculty of Health Sciences, Pretoria, South Africa; Department of Exercise and Sports Sciences, University of the Free State, Bloemfontein, South Africa; Former Team Physician South African Olympic Team and Professional Rugby, Cricket and Hockey Teams
| | - Alan Kourie
- Head of Department of Sports Medicine, Mediclinic Parkview; Dubai, United Arab Emirates; CMO Dubai Hurricanes, Former Team Doctor Natal Sharks Rugby
| | - Jerome Mampane
- CMO South African Rugby Team (Springboks), CMO Kaizer Chiefs Football Club, former CMO South African Soccer Team (Bafana Bafana)
| | - Michael Makdissi
- Olympic Park Sports Medicine Centre, Melbourne, Australia; CMO Australian Football League, Melbourne, Australia; La Trobe Sports and Exercise Medicine Research Centre, La Trobe University, Melbourne, Australia; World Rugby Concussion Consultant
| | - Jon Patricios
- Wits Sport and Health (WiSH); School of Clinical Medicine, Faculty of Health Sciences; University of the Witwatersrand, Johannesburg, South Africa; Co-Chair of the 6th International Conference on Concussion in Sports; South African and World Rugby Concussion Consultant; UEFA Head Injury Consultant; FIFA Concussion Consultant
| | - Elizabeth Pieroth
- Department of Orthopaedics, Department of Psychiatry and Behavioral Sciences, Rush Medical College, Chicago, USA; Co-Director NFL Neuropsychology Consultant Program; Director NSW Concussion Program; Concussion Specialist for Chicago Bears, Blackhawks White Socks, Fire, Red Stars, Steel, Rockford IceHogs, Indy Fuel
| | | | - Dina C Janse van Rensburg
- Section Sports Medicine, University of Pretoria, Faculty of Health Sciences, Pretoria South Africa; Medical Advisory Panel, World Netball, Manchester, United Kingdom
| | - Pierre Viviers
- Senior Director Campus Health Service; Department of Exercise, Sport and Lifestyle Medicine, Faculty of Medicine and Health Science, Stellenbosch University, South Africa
| | - Vernon Williams
- Center for Sports Neurology & Pain Medicine, Cedars-Sinai Kerlan-Jobe Institute, Los Angeles, U.S.A.; Team Neurologist Los Angeles Rams, LA Dodgers, LA Lakers, LA Clippers, LA Kings, LA Sparks; Vice-Chair California State Athletic Commission, Chair American Academy of Sports Neurology Section
| | - Jean de Wilde
- Musculoskeletal Service Emirates Airline, Dubai, United Arab Emirates; Medical Officer South African Sports Association and Olympic Committee; Former Match Day and Stadium Physician Lions Rugby Team
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Meyers SP, Hirad A, Gonzalez P, Bazarian JJ, Mirabelli MH, Rizzone KH, Ma HM, Rosella P, Totterman S, Schreyer E, Tamez-Pena JG. Clinical performance of a multiparametric MRI-based post concussive syndrome index. Front Neurol 2023; 14:1282833. [PMID: 38170071 PMCID: PMC10759224 DOI: 10.3389/fneur.2023.1282833] [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: 08/24/2023] [Accepted: 12/01/2023] [Indexed: 01/05/2024] Open
Abstract
Introduction Diffusion Tensor Imaging (DTI) has revealed measurable changes in the brains of patients with persistent post-concussive syndrome (PCS). Because of inconsistent results in univariate DTI metrics among patients with mild traumatic brain injury (mTBI), there is currently no single objective and reliable MRI index for clinical decision-making in patients with PCS. Purpose This study aimed to evaluate the performance of a newly developed PCS Index (PCSI) derived from machine learning of multiparametric magnetic resonance imaging (MRI) data to classify and differentiate subjects with mTBI and PCS history from those without a history of mTBI. Materials and methods Data were retrospectively extracted from 139 patients aged between 18 and 60 years with PCS who underwent MRI examinations at 2 weeks to 1-year post-mTBI, as well as from 336 subjects without a history of head trauma. The performance of the PCS Index was assessed by comparing 69 patients with a clinical diagnosis of PCS with 264 control subjects. The PCSI values for patients with PCS were compared based on the mechanism of injury, time interval from injury to MRI examination, sex, history of prior concussion, loss of consciousness, and reported symptoms. Results Injured patients had a mean PCSI value of 0.57, compared to the control group, which had a mean PCSI value of 0.12 (p = 8.42e-23) with accuracy of 88%, sensitivity of 64%, and specificity of 95%, respectively. No statistically significant differences were found in the PCSI values when comparing the mechanism of injury, sex, or loss of consciousness. Conclusion The PCSI for individuals aged between 18 and 60 years was able to accurately identify patients with post-concussive injuries from 2 weeks to 1-year post-mTBI and differentiate them from the controls. The results of this study suggest that multiparametric MRI-based PCSI has great potential as an objective clinical tool to support the diagnosis, treatment, and follow-up care of patients with post-concussive syndrome. Further research is required to investigate the replicability of this method using other types of clinical MRI scanners.
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Affiliation(s)
- Steven P. Meyers
- Department of Imaging Sciences, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Adnan Hirad
- Department of Vascular Surgery, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | | | - Jeffrey J. Bazarian
- Departments of Emergency Medicine, Neurology, Neurosurgery, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Mark H. Mirabelli
- Department of Orthopedics, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Katherine H. Rizzone
- Department of Orthopedics, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Heather M. Ma
- Department of Physical Medicine and Rehabilitation, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Peter Rosella
- Department of Imaging Sciences, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | | | | | - Jose G. Tamez-Pena
- School of Medicine and Health Sciences, Tecnologico de Monterey, Monterrey, Mexico
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Cook NE, Gaudet CE, Kissinger-Knox A, Liu BC, Hunter AA, Norman MA, Saadi A, Iverson GL. Race, ethnicity, and clinical outcome following sport-related concussion: a systematic review. Front Neurol 2023; 14:1110539. [PMID: 37388549 PMCID: PMC10306165 DOI: 10.3389/fneur.2023.1110539] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 04/10/2023] [Indexed: 07/01/2023] Open
Abstract
Introduction This systematic review examined whether race or ethnicity are associated with clinical outcomes (e.g., time to return to school/sports, symptom duration, vestibular deficits, and neurocognitive functioning) following sport-related concussion among child, adolescent, or college-aged student athletes. Additionally, this review assessed whether the existing literature on this topic incorporated or included broader coverage of social determinants of health. Methods The online databases PubMed, MEDLINE®, PsycINFO®, CINAHL, Cochrane Library, EMBASE, SPORTDiscus, Scopus, and Web of Science were searched. Results A total of 5,118 abstracts were screened and 12 studies met inclusion criteria, including 2,887 youth and young adults. Among the included articles, only 3 studies (25%) examined whether race and ethnicity were associated with outcomes following concussion as a primary objective. None of the studies assessed the association between social determinants of health and outcomes following concussion as a primary objective, although 5 studies (41.7%) addressed a social determinant of health or closely related topic as a secondary objective. Discussion Overall, the literature to date is extremely limited and insufficient for drawing conclusions about whether race or ethnicity are categorically associated with outcomes from sport-related concussion, or more specifically, whether there are socioeconomic, structural, or cultural differences or disparities that might be associated with clinical outcome. Systematic review registration identifier: PROSPERO, CRD42016041479, CRD42019128300.
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Affiliation(s)
- Nathan E. Cook
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States
- Sports Concussion Program, MassGeneral Hospital for Children, Boston, MA, United States
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, United States
| | - Charles E. Gaudet
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States
- Sports Concussion Program, MassGeneral Hospital for Children, Boston, MA, United States
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, United States
| | - Alicia Kissinger-Knox
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States
- Sports Concussion Program, MassGeneral Hospital for Children, Boston, MA, United States
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, United States
| | - Brian C. Liu
- Sports Concussion Program, MassGeneral Hospital for Children, Boston, MA, United States
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, United States
| | - Amy A. Hunter
- Department of Public Health Sciences and Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT, United States
- Injury Prevention Center, Connecticut Children's Medical Center and Hartford Hospital, Hartford, CT, United States
| | - Marc A. Norman
- Department of Psychiatry, University of California, San Diego, San Diego, CA, United States
| | - Altaf Saadi
- Department of Neurology, Harvard Medical School, Boston, MA, United States
- Department of Neurology, Massachusetts General Hospital, Boston, MA, United States
| | - Grant L. Iverson
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, United States
- Sports Concussion Program, MassGeneral Hospital for Children, Boston, MA, United States
- Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, United States
- Department of Physical Medicine and Rehabilitation, Schoen Adams Research Institute at Spaulding Rehabilitation, Charlestown, MA, United States
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