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Seth C. Gamradt, MD
Associate Professor of Clinical Orthopaedic Surgery
Director, Orthopaedic Athletic Medicine
Orthopaedic Surgery
HCT 1520 San Pablo Street Health Sciences Campus Los Angeles
+1 323 442 5860


Dr. Seth Gamradt is a specialist in the field of orthopaedic surgery and sports medicine at the Keck Medical Center of USC. Dr. Gamradt is the Director of Orthopaedic Athletic Medicine for USC Athletics. Dr. Gamradt’s practice has an emphasis on arthroscopic shoulder surgery; arthroscopic knee surgery and ligament reconstruction (ACL surgery); shoulder replacement; and elbow arthroscopy/ligament reconstruction. He has a special interest in caring for athletes of all ages and is a team physician for the USC Trojans. Dr. Gamradt is also a team physician for United States Women’s Soccer. A native of Minnesota, Dr. Gamradt attended college at Pepperdine University where he graduated Magna Cum Laude. Dr. Gamradt then graduated with honors from Weill Cornell Medical College in New York City. He completed his residency training in Orthopaedic Surgery at UCLA during which he completed a one-year research fellowship. After residency, Dr. Gamradt completed a sports medicine and shoulder surgery fellowship at the top-ranked Hospital for Special Surgery in New York City. During fellowship, Dr. Gamradt was an assistant team physician to the New York Giants football team. Prior to his appointment at USC, Dr. Gamradt spent many years as a team physician and orthopaedic surgeon at UCLA. Dr. Gamradt is part of the exclusive international association comprised of shoulder and elbow surgeons: The American Shoulder and Elbow Surgeons. He is one of the “Top Doctors” as ranked by US News and World Report. Dr. Gamradt has been involved in both clinical and laboratory research for over 10 years and is the author of numerous peer-reviewed research articles, book chapters, and presentations. Dr. Gamradt is on the editorial board of the journal: Techniques in Shoulder and Elbow Surgery and The Journal of Bone and Joint Surgery Sports Medicine Highlights.


America’s Top Doctor’s Award

Sports Health : David T. Sisk Award for Best Original Research, 2015

ACESS: Elected to Association of Clinical Elbow and Shoulder Surgeons , 2014

American Shoulder and Elbow Surgeons : Elected to American Shoulder and Elbow Surgeons , 2014

Los Angeles Magazine: Super Doctor, 2016

Castle Connolly: America's Top Doctors, 2016


Hernandez J, Gamradt S, Morcos D. Femoral Fracture Following Acute Trauma in a Female Collegiate Swimmer. J Orthop Sports Phys Ther. 2016 Nov; 46(11):1010. View in: PubMed

Narvy SJ, Didinger TC, Lehoang D, Vangsness CT, Tibone JE, Hatch GF, Omid R, Osorno F, Gamradt SC. Direct Cost Analysis of Outpatient Arthroscopic Rotator Cuff Repair in Medicare and Non-Medicare Populations. Orthop J Sports Med. 2016 Oct; 4(10):2325967116668829. View in: PubMed

Mehran N, Photopoulos CD, Narvy SJ, Romano R, Gamradt SC, Tibone JE. Epidemiology of Operative Procedures in an NCAA Division I Football Team Over 10 Seasons. Orthop J Sports Med. 2016 Jul; 4(7):2325967116657530. View in: PubMed

Petrigliano FA, Bezrukov N, Gamradt SC, SooHoo NF. Factors predicting complication and reoperation rates following surgical fixation of proximal humeral fractures. J Bone Joint Surg Am. 2014 Sep 17; 96(18):1544-51. View in: PubMed

Villacis D, Yi A, Jahn R, Kephart CJ, Charlton T, Gamradt SC, Romano R, Tibone JE, Hatch GF. Prevalence of Abnormal Vitamin D Levels Among Division I NCAA Athletes. Sports Health. 2014 Jul; 6(4):340-7. View in: PubMed

Zhang AL, Montgomery SR, Ngo SS, Hame SL, Wang JC, Gamradt SC. Arthroscopic versus open shoulder stabilization: current practice patterns in the United States. Arthroscopy. 2014 Apr; 30(4):436-43. View in: PubMed

Zhang AL, Montgomery SR, Ngo SS, Hame SL, Wang JC, Gamradt SC. Analysis of rotator cuff repair trends in a large private insurance population. Arthroscopy. 2013 Apr; 29(4):623-9. View in: PubMed

Montgomery SR, Petrigliano FA, Gamradt SC. Failed rotator cuff surgery, evaluation and decision making. Clin Sports Med. 2012 Oct; 31(4):693-712. View in: PubMed

Hame SL, Nguyen V, Ellerman J, Ngo SS, Wang JC, Gamradt SC. Complications of arthroscopic meniscectomy in the older population. Am J Sports Med. 2012 Jun; 40(6):1402-5. View in: PubMed

Zhang AL, Kreulen C, Ngo SS, Hame SL, Wang JC, Gamradt SC. Demographic trends in arthroscopic SLAP repair in the United States. Am J Sports Med. 2012 May; 40(5):1144-7. View in: PubMed

Cadet ER, Adler RS, Gallo RA, Gamradt SC, Warren RF, Cordasco FA, Fealy S. Contrast-enhanced ultrasound characterization of the vascularity of the repaired rotator cuff tendon: short-term and intermediate-term follow-up. J Shoulder Elbow Surg. 2012 May; 21(5):597-603. View in: PubMed

Gamradt SC, Gelber J, Zhang AL. Shoulder function and pain level after revision of failed reverse shoulder replacement to hemiarthroplasty. Int J Shoulder Surg. 2012 Apr; 6(2):29-35. View in: PubMed

Montgomery SR, Petrigliano FA, Gamradt SC. Biologic augmentation of rotator cuff repair. Curr Rev Musculoskelet Med. 2011 Dec; 4(4):221-30. View in: PubMed

Adler RS, Johnson KM, Fealy S, Maderazo A, Gallo RA, Gamradt SC, Warren RF. Contrast-enhanced sonographic characterization of the vascularity of the repaired rotator cuff: utility of maximum intensity projection imaging. J Ultrasound Med. 2011 Aug; 30(8):1103-9. View in: PubMed

Gallo RA, Gamradt SC, Mattern CJ, Cordasco FA, Craig EV, Dines DM, Warren RF. Instability after reverse total shoulder replacement. J Shoulder Elbow Surg. 2011 Jun; 20(4):584-90. View in: PubMed

Bernthal NM, Gamradt SC, Kay RM, Wren TA, Cuomo AV, Reid J, Bales J, Otsuka NY. Static and dynamic gait parameters before and after multilevel soft tissue surgery in ambulating children with cerebral palsy. J Pediatr Orthop. 2010 Mar; 30(2):174-9. View in: PubMed

Gamradt SC, Gallo RA, Adler RS, Maderazo A, Altchek DW, Warren RF, Fealy S. Vascularity of the supraspinatus tendon three months after repair: characterization using contrast-enhanced ultrasound. J Shoulder Elbow Surg. 2010 Jan; 19(1):73-80. View in: PubMed

Gamradt SC, Brophy RH, Barnes R, Warren RF, Thomas Byrd JW, Kelly BT. Nonoperative treatment for proximal avulsion of the rectus femoris in professional American football. Am J Sports Med. 2009 Jul; 37(7):1370-4. View in: PubMed

Brophy RH, Gamradt SC, Ellis SJ, Barnes RP, Rodeo SA, Warren RF, Hillstrom H. Effect of turf toe on foot contact pressures in professional American football players. Foot Ankle Int. 2009 May; 30(5):405-9. View in: PubMed

Brockmeier SF, Dodson CC, Gamradt SC, Coleman SH, Altchek DW. Arthroscopic intratendinous repair of the delaminated partial-thickness rotator cuff tear in overhead athletes. Arthroscopy. 2008 Aug; 24(8):961-5. View in: PubMed

Brophy RH, MacKenzie CR, Gamradt SC, Barnes RP, Rodeo SA, Warren RF. The diagnosis and management of psoriatic arthritis in a professional football player presenting with a knee effusion: a case report. Clin J Sport Med. 2008 Jul; 18(4):369-71. View in: PubMed

Brophy RH, Gamradt SC, Barnes RP, Powell JW, DelPizzo JJ, Rodeo SA, Warren RF. Kidney injuries in professional American football: implications for management of an athlete with 1 functioning kidney. Am J Sports Med. 2008 Jan; 36(1):85-90. View in: PubMed

Gamradt SC, Brophy R, Barnes R, Birchansky S, Rodeo SA, Warren RF, Apuzzo MA. Incidental findings in cerebral imaging: arachnoid cyst in a professional football player. Clin J Sport Med. 2008 Jan; 18(1):97-9. View in: PubMed

Williams RJ, Gamradt SC. Articular cartilage repair using a resorbable matrix scaffold. Instr Course Lect. 2008; 57:563-71. View in: PubMed

Cuomo AV, Gamradt SC, Kim CO, Pirpiris M, Gates PE, McCarthy JJ, Otsuka NY. Health-related quality of life outcomes improve after multilevel surgery in ambulatory children with cerebral palsy. J Pediatr Orthop. 2007 Sep; 27(6):653-7. View in: PubMed

Gamradt SC, Abe N, Bahamonde ME, Lee YP, Nelson SD, Lyons KM, Lieberman JR. Tracking expression of virally mediated BMP-2 in gene therapy for bone repair. Clin Orthop Relat Res. 2006 Sep; 450:238-45. View in: PubMed

Feeley BT, Krenek L, Liu N, Hsu WK, Gamradt SC, Schwarz EM, Huard J, Lieberman JR. Overexpression of noggin inhibits BMP-mediated growth of osteolytic prostate cancer lesions. Bone. 2006 Feb; 38(2):154-66. View in: PubMed

Feeley BT, Gamradt SC, Hsu WK, Liu N, Krenek L, Robbins P, Huard J, Lieberman JR. Influence of BMPs on the formation of osteoblastic lesions in metastatic prostate cancer. J Bone Miner Res. 2005 Dec; 20(12):2189-99. View in: PubMed

Whang PG, Schwarz EM, Gamradt SC, Dougall WC, Lieberman JR. The effects of RANK blockade and osteoclast depletion in a model of pure osteoblastic prostate cancer metastasis in bone. J Orthop Res. 2005 Nov; 23(6):1475-83. View in: PubMed

Sugiyama O, An DS, Kung SP, Feeley BT, Gamradt S, Liu NQ, Chen IS, Lieberman JR. Lentivirus-mediated gene transfer induces long-term transgene expression of BMP-2 in vitro and new bone formation in vivo. Mol Ther. 2005 Mar; 11(3):390-8. View in: PubMed

Whang PG, Gamradt SC, Gates JJ, Lieberman JR. Effects of the proteasome inhibitor bortezomib on osteolytic human prostate cancer cell metastases. Prostate Cancer Prostatic Dis. 2005; 8(4):327-34. View in: PubMed

Gamradt SC, Wang JC. Lumbar disc arthroplasty. Spine J. 2005 Jan-Feb; 5(1):95-103. View in: PubMed

Gamradt SC, Feeley BT, Liu NQ, Roostaeian J, Lin YQ, Zhu LX, Sharma S, Dubinett SM, Lieberman JR. The effect of cyclooxygenase-2 (COX-2) inhibition on human prostate cancer induced osteoblastic and osteolytic lesions in bone. Anticancer Res. 2005 Jan-Feb; 25(1A):107-15. View in: PubMed

Gamradt SC, Lieberman JR. Genetic modification of stem cells to enhance bone repair. Ann Biomed Eng. 2004 Jan; 32(1):136-47. View in: PubMed

Gamradt SC, Lieberman JR. Bone graft for revision hip arthroplasty: biology and future applications. Clin Orthop Relat Res. 2003 Dec; (417):183-94. View in: PubMed

Scaduto AA, Gamradt SC, Yu WD, Huang J, Delamarter RB, Wang JC. Perioperative complications of threaded cylindrical lumbar interbody fusion devices: anterior versus posterior approach. J Spinal Disord Tech. 2003 Dec; 16(6):502-7. View in: PubMed

Bostrom MP, Gamradt SC, Asnis P, Vickery BH, Hill E, Avnur Z, Waters RV. Parathyroid hormone-related protein analog RS-66271 is an effective therapy for impaired bone healing in rabbits on corticosteroid therapy. Bone. 2000 May; 26(5):437-42. View in: PubMed

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