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Susan Sigward, PhD

TitleAssociate Professor of Research Physical Therapy
InstitutionUniversity of Southern California
DepartmentBiokinesiology and Physical Therapy
AddressCHP 155
Health Sciences Campus
Los Angeles CA 90089-9006
Phone+1 323 442 2454
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    Dr. Sigward is an Assistant Professor of Clinical PT. Dr. Sigward is an Athletic Trainer and Physical Therapist. Her teaching responsibilities include Musculoskeletal Anatomy and Orthopedic Pathology. Dr. Sigward is the Director of the USC Community Health and Wellness Research Center at CATZ. The Center is a collaborative project between the University of Southern California’s Division of Biokinesiology and Physical Therapy and the Competitive Athletic Training Zone, Physical Therapy Institute and Sports Performance Center in Pasadena, California. When completed, it will house state of the art biomechanics and exercise physiology research laboratories, dedicated to enhance the physical well-being and quality of life through activity.

    Dr. Sigward’s studies abnormal movement patterns related to lower extremity injury and the factors that contribute to their development. In particular, the contribution of experience, age, training and sex to the development of movement strategies that may contribute to knee injuries. Her current research efforts are focused on the identification of factors contributing to anterior cruciate ligament (ACL) injuries in female athletes. Information obtained from this research will be useful in the development of effective injury prevention and rehabilitation protocols.
    Dr. Sigward currently serves as a member of the Orthopedic, Research and Sports Sections of the American Physical Therapy Association (APTA) and the Chair of the California Research Special Interest Group in the California Chapter of the APTA. In addition, she is a member of the National Athletic Trainer’s Association, American Society of Biomechanics, American College of Sports Medicine, North American Society for the Psychology of Sport and Physical Activity and American Alliance for Health, Physical Education, Recreation and Dance.


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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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    1. Pratt KA, Sigward SM. Inertial Sensor Angular Velocities Reflect Dynamic Knee Loading during Single Limb Loading in Individuals Following Anterior Cruciate Ligament Reconstruction. Sensors (Basel). 2018 Oct 15; 18(10). PMID: 30326570.
      View in: PubMed
    2. Lin PE, Sigward SM. Contributors to knee loading deficits during gait in individuals following anterior cruciate ligament reconstruction. Gait Posture. 2018 Aug 20; 66:83-87. PMID: 30170138.
      View in: PubMed
    3. Pratt KA, Sigward SM. Detection of Knee Power Deficits Following ACL Reconstruction Using Wearable Sensors. J Orthop Sports Phys Ther. 2018 Jul 11; 1-24. PMID: 29996735.
      View in: PubMed
    4. Havens KL, Cohen SC, Pratt KA, Sigward SM. Accelerations from wearable accelerometers reflect knee loading during running after anterior cruciate ligament reconstruction. Clin Biomech (Bristol, Avon). 2018 Jul 07; 58:57-61. PMID: 30029071.
      View in: PubMed
    5. Sigward SM, Chan MM, Lin PE, Almansouri SY, Pratt KA. Compensatory Strategies That Reduce Knee Extensor Demand During a Bilateral Squat Change From 3 to 5 Months Following Anterior Cruciate Ligament Reconstruction. J Orthop Sports Phys Ther. 2018 Jun 12; 1-18. PMID: 29895231.
      View in: PubMed
    6. Padua DA, DiStefano LJ, Hewett TE, Garrett WE, Marshall SW, Golden GM, Shultz SJ, Sigward SM. National Athletic Trainers' Association Position Statement: Prevention of Anterior Cruciate Ligament Injury. J Athl Train. 2018 Jan; 53(1):5-19. PMID: 29314903.
      View in: PubMed
    7. Pollard CD, Sigward SM, Powers CM. ACL Injury Prevention Training Results in Modification of Hip and Knee Mechanics During a Drop-Landing Task. Orthop J Sports Med. 2017 Sep; 5(9):2325967117726267. PMID: 28959697.
      View in: PubMed
    8. Pratt KA, Sigward SM. Knee Loading Deficits During Dynamic Tasks in Individuals Following Anterior Cruciate Ligament Reconstruction. J Orthop Sports Phys Ther. 2017 Jun; 47(6):411-419. PMID: 28499343.
      View in: PubMed
    9. Hashish R, Samarawickrame SD, Sigward S, Azen SP, Salem GJ. Lower-limb dynamics and clinical outcomes for habitually shod runners who transition to barefoot running. Phys Ther Sport. 2018 Jan; 29:93-100. PMID: 28325673.
      View in: PubMed
    10. Sigward SM, Chan MM, Lin PE. Characterizing knee loading asymmetry in individuals following anterior cruciate ligament reconstruction using inertial sensors. Gait Posture. 2016 09; 49:114-119. PMID: 27395452; PMCID: PMC5035204 [Available on 09/01/17].
    11. Cesar GM, Sigward SM. Dynamic stability during running gait termination: Predictors for successful control of forward momentum in children and adults. Hum Mov Sci. 2016 Aug; 48:37-43. PMID: 27101563.
      View in: PubMed
    12. Lawrence EL, Cesar GM, Bromfield MR, Peterson R, Valero-Cuevas FJ, Sigward SM. Strength, Multijoint Coordination, and Sensorimotor Processing Are Independent Contributors to Overall Balance Ability. Biomed Res Int. 2015; 2015:561243. PMID: 26665007.
      View in: PubMed
    13. Sigward SM, Lin P, Pratt K. Knee loading asymmetries during gait and running in early rehabilitation following anterior cruciate ligament reconstruction: A longitudinal study. Clin Biomech (Bristol, Avon). 2016 Feb; 32:249-54. PMID: 26640045.
      View in: PubMed
    14. Sigward SM, Cesar GM, Havens KL. Predictors of Frontal Plane Knee Moments During Side-Step Cutting to 45 and 110 Degrees in Men and Women: Implications for Anterior Cruciate Ligament Injury. Clin J Sport Med. 2015 Nov; 25(6):529-34. PMID: 25290102; PMCID: PMC4387120 [Available on 11/01/16].
    15. Cesar GM, Sigward SM. Dynamic stability during running gait termination: Differences in strategies between children and adults to control forward momentum. Hum Mov Sci. 2015 Oct; 43:138-45. PMID: 26291766; PMCID: PMC4570872 [Available on 10/01/16].
    16. Havens KL, Sigward SM. Cutting mechanics: relation to performance and anterior cruciate ligament injury risk. Med Sci Sports Exerc. 2015 Apr; 47(4):818-24. PMID: 25102291.
      View in: PubMed
    17. Wade E, Lin P, Hemmati S, Sigward S. Predicting daily gait behaviors after anterior cruciate ligament surgery: A case study. Conf Proc IEEE Eng Med Biol Soc. 2015; 2015:6752-5. PMID: 26737843.
      View in: PubMed
    18. Roll SC, Rana M, Sigward SM, Yani MS, Kirages DJ, Kutch JJ. Reliability of superficial male pelvic floor structural measurements using linear-array transperineal sonography. Ultrasound Med Biol. 2015 Feb; 41(2):610-7. PMID: 25444690; PMCID: PMC4297525.
    19. Havens KL, Sigward SM. Joint and segmental mechanics differ between cutting maneuvers in skilled athletes. Gait Posture. 2015 Jan; 41(1):33-8. PMID: 25194689.
      View in: PubMed
    20. Havens KL, Sigward SM. Whole body mechanics differ among running and cutting maneuvers in skilled athletes. Gait Posture. 2015 Sep; 42(3):240-5. PMID: 25149902.
      View in: PubMed
    21. Diaz AM, Sigward S. Commentary on "performance of high school adolescents on functional gait and balance measures". Pediatr Phys Ther. 2014; 26(2):200. PMID: 24675119.
      View in: PubMed
    22. Sigward SM, Pollard CD, Havens KL, Powers CM. Influence of sex and maturation on knee mechanics during side-step cutting. Med Sci Sports Exerc. 2012 Aug; 44(8):1497-503. PMID: 22330027; PMCID: PMC3399059.
    23. Song J, Sigward S, Fisher B, Salem GJ. Altered Dynamic Postural Control during Step Turning in Persons with Early-Stage Parkinson's Disease. Parkinsons Dis. 2012; 2012:386962. PMID: 22518349; PMCID: PMC3306994.
    24. Lyle MA, Sigward SM, Tsai LC, Pollard CD, Powers CM. Influence of maturation on instep kick biomechanics in female soccer athletes. Med Sci Sports Exerc. 2011 Oct; 43(10):1948-54. PMID: 21448083.
      View in: PubMed
    25. Sigward SM, Havens KL, Powers CM. Knee separation distance and lower extremity kinematics during a drop land: implications for clinical screening. J Athl Train. 2011 Sep-Oct; 46(5):471-5. PMID: 22488133; PMCID: PMC3418952.
    26. Sigward SM, Pollard CD, Powers CM. The influence of sex and maturation on landing biomechanics: implications for anterior cruciate ligament injury. Scand J Med Sci Sports. 2012 Aug; 22(4):502-9. PMID: 21210853; PMCID: PMC3117023.
    27. Shultz SJ, Schmitz RJ, Nguyen AD, Chaudhari AM, Padua DA, McLean SG, Sigward SM. ACL Research Retreat V: an update on ACL injury risk and prevention, March 25-27, 2010, Greensboro, NC. J Athl Train. 2010 Sep-Oct; 45(5):499-508. PMID: 20831398; PMCID: PMC2938324.
    28. Pollard CD, Sigward SM, Powers CM. Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments. Clin Biomech (Bristol, Avon). 2010 Feb; 25(2):142-6. PMID: 19913961; PMCID: PMC2815098.
    29. Tsai LC, Sigward SM, Pollard CD, Fletcher MJ, Powers CM. Effects of fatigue and recovery on knee mechanics during side-step cutting. Med Sci Sports Exerc. 2009 Oct; 41(10):1952-7. PMID: 19727016.
      View in: PubMed
    30. Sigward SM, Ota S, Powers CM. Predictors of frontal plane knee excursion during a drop land in young female soccer players. J Orthop Sports Phys Ther. 2008 Nov; 38(11):661-667. PMID: 18978451.
      View in: PubMed
    31. Markolf KL, Graves BR, Sigward SM, Jackson SR, McAllister DR. Effects of posterolateral reconstructions on external tibial rotation and forces in a posterior cruciate ligament graft. J Bone Joint Surg Am. 2007 Nov; 89(11):2351-8. PMID: 17974876.
      View in: PubMed
    32. Sigward SM, Markolf KL, Graves BR, Chacko JM, Jackson SR, McAllister DR. Femoral fixation sites for optimum isometry of posterolateral reconstruction. J Bone Joint Surg Am. 2007 Nov; 89(11):2359-68. PMID: 17974877.
      View in: PubMed
    33. Markolf KL, Graves BR, Sigward SM, Jackson SR, McAllister DR. How well do anatomical reconstructions of the posterolateral corner restore varus stability to the posterior cruciate ligament-reconstructed knee? Am J Sports Med. 2007 Jul; 35(7):1117-22. PMID: 17581975.
      View in: PubMed
    34. Sigward SM, Powers CM. Loading characteristics of females exhibiting excessive valgus moments during cutting. Clin Biomech (Bristol, Avon). 2007 Aug; 22(7):827-33. PMID: 17531364.
      View in: PubMed
    35. Markolf KL, Graves BR, Sigward SM, Jackson SR, McAllister DR. Popliteus bypass and popliteofibular ligament reconstructions reduce posterior tibial translations and forces in a posterior cruciate ligament graft. Arthroscopy. 2007 May; 23(5):482-7. PMID: 17478278; PMCID: PMC2205994.
    36. Pollard CD, Sigward SM, Powers CM. Gender differences in hip joint kinematics and kinetics during side-step cutting maneuver. Clin J Sport Med. 2007 Jan; 17(1):38-42. PMID: 17304004.
      View in: PubMed
    37. Sigward S, Powers CM. The influence of experience on knee mechanics during side-step cutting in females. Clin Biomech (Bristol, Avon). 2006 Aug; 21(7):740-7. PMID: 16675083.
      View in: PubMed
    38. Pollard CD, Sigward SM, Ota S, Langford K, Powers CM. The influence of in-season injury prevention training on lower-extremity kinematics during landing in female soccer players. Clin J Sport Med. 2006 May; 16(3):223-7. PMID: 16778542.
      View in: PubMed
    39. Sigward SM, Powers CM. The influence of gender on knee kinematics, kinetics and muscle activation patterns during side-step cutting. Clin Biomech (Bristol, Avon). 2006 Jan; 21(1):41-8. PMID: 16209900.
      View in: PubMed
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