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Jonathan Chen Sum, BS

Title(s)Assistant Professor Of Clinical Physical Therapy Director Of Usc Pt Associates, Hsc
AddressHRA 103
Off Campus
Los Angeles CA 90089-9262
Phone+1 323 865 1200
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    Dr. Jonathan Sum is the Director of USC Physical Therapy Associates on the Health Sciences Campus, the faculty practice for the USC Division of Biokinesiology and Physical Therapy. He specializes in treating patients with orthopedic disorders, sports related injuries, post-surgical rehabilitation, pain management, and musical performance related injuries. Dr. Sum is double board certified by the American Board of Physical Therapy Specialties, both as an Orthopedic Clinical Specialist, and a Sports Clinical Specialist. He is a member of the Orthopedic Section and the Sports Section of the American Physical Therapy Association. He is also a Certified Strength and Conditioning Specialist, and a member of the National Strength and Conditioning Association.

    Dr. Sum is an Instructor of Clinical Physical Therapy in the USC Division of Biokinesiology and Physical Therapy. He teaches in the Doctor of Physical Therapy program where he coordinates the shoulder complex module for the patient management courses in the first year. He is also a faculty mentor in the Orthopedic Physical Therapy residency program and the Sports Physical Therapy residency program at USC. For the Keck School of Medicine of USC, Dr. Sum instructs the musculoskeletal examination labs for the Introduction to Clinical Medicine courses, and has guest lectured for the Thornton School of Music. He has also been a returning guest panelist for the Kinesiology Club.

    Along with his clinical and academic pursuits, Dr. Sum has also been published in the International Journal of Sports Physical Therapy, and has been an invited speaker at several local, state, and national conferences. He has been involved with research studying the lumbar spine and the shoulder complex, as well as examining jazz guitarists. Dr. Sum also assists with pre-season physicals for the Los Angeles Angels of Anaheim professional baseball club during Cactus League Spring Training every year.

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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. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Little League Shoulder in a 15-Year-Old Male Baseball Pitcher. J Orthop Sports Phys Ther. 2018 01; 48(1):51. Zipser MC, Sum JC, Wilcox AG. PMID: 29291284.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    2. Perioperative Testosterone Supplementation Increases Lean Mass in Healthy Men Undergoing Anterior Cruciate Ligament Reconstruction: A Randomized Controlled Trial. Orthop J Sports Med. 2017 Aug; 5(8):2325967117722794. Wu B, Lorezanza D, Badash I, Berger M, Lane C, Sum JC, Hatch GF, Schroeder ET. PMID: 28840147.
      View in: PubMed   Mentions:
    3. Observational Scapular Dyskinesis: Known-Groups Validity in Patients With and Without Shoulder Pain. J Orthop Sports Phys Ther. 2017 Aug; 47(8):530-537. Plummer HA, Sum JC, Pozzi F, Varghese R, Michener LA. PMID: 28683230.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    4. Promoting physical therapists' use of research evidence to inform clinical practice: part 3--long term feasibility assessment of the PEAK program. BMC Med Educ. 2016 May 12; 16:144. Tilson JK, Mickan S, Howard R, Sum JC, Zibell M, Cleary L, Mody B, Michener LA. PMID: 27176726.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    5. Pelvic osteomyelitis presenting as groin and medial thigh pain: a resident's case problem. J Orthop Sports Phys Ther. 2015 Apr; 45(4):306-15. Hawkins AP, Sum JC, Kirages D, Sigman E, Sahai-Srivastava S. PMID: 25579689.
      View in: PubMed   Mentions: 1     Fields:    Translation:HumansCells
    6. Randomized control trial to evaluate the effects of acute testosterone administration in men on muscle mass, strength, and physical function following ACL reconstructive surgery: rationale, design, methods. BMC Surg. 2014 Dec 06; 14:102. Wu BW, Berger M, Sum JC, Hatch GF, Schroeder ET. PMID: 25481088.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    7. Promoting physical therapists' use of research evidence to inform clinical practice: part 2--a mixed methods evaluation of the PEAK program. BMC Med Educ. 2014 Jun 25; 14:126. Tilson JK, Mickan S, Sum JC, Zibell M, Dylla JM, Howard R. PMID: 24965574.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    8. Superior labrum anterior-to-posterior tear. J Orthop Sports Phys Ther. 2012 Dec; 42(12):1050. Sum JC, Omid R. PMID: 23202247.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    9. Osteochondritis dissecans. J Orthop Sports Phys Ther. 2011 Oct; 41(10):796. Sum JC, Hatch GF. PMID: 21979791.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
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