June Featured Authors

Riann Palmieri-Smith, PhD
Associate Professor of Kinesiology and Orthopaedic Surgery
The University of Michigan
Orthopaedic Rehabilitation and Biomechanics (ORB) Laboratory
Program Chair
Athletic Training

From the June issue: Epidemiology of Anterior Cruciate Ligament Tears in the National Football League

Podcast: Listen to Drs. Palmieri-Smith and Herzog discuss their article in the June issue.


Dr. Riann Palmieri-Smith is Associate Professor of Kinesiology and Orthopaedic Surgery at The University of Michigan.  She is co-director of the Orthopaedic Rehabilitation and Biomechanics (ORB) Laboratory and serves as program chair for Athletic Training.

Dr. Palmieri-Smith has published over 80 articles in peer-reviewed journals, including the American Journal of Sports Medicine, Clinical Biomechanics, Journal of Athletic TrainingKnee Surgery Sports Traumatology and Arthroscopy, and Physical Therapy in Sport. She has given more than 80 presentations for organizations like American Orthopaedic Society for Sports Medicine, National Athletic Trainers’ Association, American Society for Biomechanics, and the American College of Sports Medicine (ACSM) Annual Convention. Riann currently serves on the editorial boards for the Journal of Athletic Training and Journal of Applied Biomechanics, and serves as an Associate Editor for Sports Health: A Multi-Disciplinary Approach

Riann has received more than $3 million in grant funding from organizations such as the National Institutes of Arthritis and Musculoskeletal Diseases, the National Institutes of Child Health and Human Development, National Athletic Trainers’ Research & Education Foundation, and the National Football League.

She has also received multiple awards for her work, including the New Investigator Award from the National Athletic Trainers’ Research & Education Foundation. She earned Fellow status in the National Athletic Trainers’ Association (NATA) in 2017. Dr. Palmieri-Smith researches the neuromuscular and biomechanical consequences of joint injury, with a focus on ACL injury.  She also is interested in interventions and rehabilitation approaches to combat the negative consequences of ACL injury and the development of

Selected Other Published Work

Blood Flow Restriction Training Applied With High-Intensity Exercise Does Not Improve Quadriceps Muscle Function After Anterior Cruciate Ligament Reconstruction: A Randomized Controlled Trial. Curran MT, Bedi A, Mendias CL, Wojtys EM, Kujawa MV, Palmieri-Smith RM. Am J Sports Med. 2020 Mar;48(4):825-837. doi: 10.1177/0363546520904008.

Quadriceps Strength Asymmetry After Anterior Cruciate Ligament Reconstruction Alters Knee Joint Biomechanics and Functional Performance at Time of Return to Activity. Palmieri-Smith RM, Lepley LK. Am J Sports Med. 2015 Jul;43(7):1662-9. doi: 10.1177/0363546515578252.

A Cross-sectional Examination of Quadriceps Strength, Biomechanical Function, and Functional Performance From 9 to 24 Months After Anterior Cruciate Ligament Reconstruction. Curran MT, Bedi A, Kujawa M, Palmieri-Smith R. Am J Sports Med. 2020 Aug;48(10):2438-2446. doi: 10.1177/0363546520940310.

Peroneal activation deficits in persons with functional ankle instability. Palmieri-Smith RM, Hopkins JT, Brown TN. Am J Sports Med. 2009 May;37(5):982-8. doi: 10.1177/0363546508330147.

Quadriceps inhibition induced by an experimental knee joint effusion affects knee joint mechanics during a single-legged drop landing. Palmieri-Smith RM, Kreinbrink J, Ashton-Miller JA, Wojtys EM. Am J Sports Med. 2007 Aug;35(8):1269-75. doi: 10.1177/0363546506296417.

Mackenzie M. Herzog, PhD
Associate Epidemiology Director
IQVIA Injury Surveillance and Analytics
Adjunct Assistant Professor
University of North Carolina at Chapel Hill Department of Exercise and Sport Science


Makenzie Herzog, PhD, MPH is an Associate Epidemiology Director on the Sports Injury Surveillance and Analytics team at IQVIA, which examines injuries and player health in the NFL and NBA, and an Adjunct Assistant Professor in the Department of Exercise and Sport Science at the University of North Carolina at Chapel Hill. Her research interests include musculoskeletal and concussion sports injury prevention, use of large healthcare databases for assessing musculoskeletal injuries, and orthopaedic clinical research. Her methodological interests include use of surveillance, claims, and electronic health record data and adaption of existing epidemiologic methods to study sports injuries and musculoskeletal health.

Mackenzie completed her doctorate in Injury Epidemiology from the Department of Epidemiology at the University of North Carolina at Chapel Hill. She holds an MPH degree in Epidemiology from Emory University and a Bachelor of Arts degree in Psychology from Northwestern University.

Mackenzie has 16 years of clinical and research experience in sports medicine and orthopaedics, including previous positions at Steadman Philippon Research Institute, Northwestern University Intercollegiate Sports Medicine, Centers for Disease Control and Prevention, Children’s Healthcare of Atlanta, and Department of Exercise and Sport Science at the University of North Carolina at Chapel Hill. Mackenzie has published manuscripts in leading journals, such as JAMA Pediatrics, American Journal of Sports Medicine, and Journal of Bone & Joint Surgery, and presented her research at numerous clinical and epidemiologic conferences. She is an editorial board member for Sports Health, and was a co-chair of the planning and writing committee for the American Medical Society for Sports Medicine’s Youth Early Sport Specialization Summit. She has been an invited speaker for clinical education sessions on research methods in orthopaedics and sports medicine, thought leadership conferences on epidemiologic and public health methods for studying sports injuries, and clinical epidemiology courses.

Selected Other Published Work

Ankle Sprains in the National Basketball Association, 2013-2014 Through 2016-2017. Herzog MM, Mack CD, Dreyer NA, Wikstrom EA, Padua DA, Kocher MS, DiFiori JP, Marshall SW.Am J Sports Med. 2019 Sep;47(11):2651-2658. doi: 10.1177/0363546519864678. Epub 2019 Aug 7.PMID: 31389712.

Allograft Augmentation of Hamstring Anterior Cruciate Ligament Autografts Is Associated With Increased Graft Failure in Children and Adolescents. Perkins CA, Busch MT, Christino M, Herzog MM, Willimon SC.Am J Sports Med. 2019 Jun;47(7):1576-1582. doi: 10.1177/0363546519849607. Epub 2019 May 16.PMID: 31095404.

Primary Circumferential Acetabular Labral Reconstruction: Achieving Outcomes Similar to Primary Labral Repair Despite More Challenging Patient Characteristics. Scanaliato JP, Christensen DL, Salfiti C, Herzog MM, Wolff AB.Am J Sports Med. 2018 Jul;46(9):2079-2088. doi: 10.1177/0363546518775425. Epub 2018 May 30.PMID: 29847149.

Incidence, Severity, and Time Loss Associated With Collegiate Football Fractures, 2004-2005 to 2013-2014. Cairns MA, Hasty EK, Herzog MM, Ostrum RF, Kerr ZY.Am J Sports Med. 2018 Mar;46(4):987-994. doi: 10.1177/0363546517749914. Epub 2018 Jan 29.PMID: 29377710.

Micheli Anterior Cruciate Ligament Reconstruction in Skeletally Immature Youths: A Retrospective Case Series With a Mean 3-Year Follow-up. Willimon SC, Jones CR, Herzog MM, May KH, Leake MJ, Busch MT.Am J Sports Med. 2015 Dec;43(12):2974-81. doi: 10.1177/0363546515608477. Epub 2015 Oct 23.PMID: 26498959.

Epidemiology of Shoulder Instability in the National Football League. Anderson MJJ, Mack CD, Herzog MM, Levine WN. Orthop J Sports Med. 2021 May 4;9(5):23259671211007743. doi: 10.1177/23259671211007743. eCollection 2021 May. PMID: 33997084. Free PMC article.

Cost of Outpatient Arthroscopic Anterior Cruciate Ligament Reconstruction Among Commercially Insured Patients in the United States, 2005-2013. Herzog MM, Marshall SW, Lund JL, Pate V, Spang JT.Orthop J Sports Med. 2017 Jan 27;5(1):2325967116684776. doi: 10.1177/2325967116684776. eCollection 2017 Jan.PMID: 28210655.

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