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C. Benjamin Ma, M.D.

Chief of Sports Medicine

Dr. C. Benjamin Ma is chief of Sports Medicine at UCSF. His special interests include all aspects of shoulder surgery, such as arthroscopy, replacements and tendon transfers; knee arthroscopy surgery such as ligament reconstruction, cartilage replacement and meniscus surgery; and elbow ligament surgery. He also is involved in research on cartilage replacement and imaging as well as the biomechanics of rotator cuff repairs and outcomes. He has received multiple research grants in cartilage and ACL imaging and is involved in multi-center trials in rotator cuff repairs and cartilage resurfacing.

Ma earned an undergraduate degree in bioelectrical engineering at Brown University and a medical degree at Johns Hopkins University. He completed a residency in orthopedic surgery at the University of Pittsburgh, where he completed a one-year musculoskeletal research fellowship. Following his residency, Ma completed a second fellowship in shoulder and knee surgery and sports medicine at the Hospital for Special Surgery in New York.

Clinics

Arthritis and Joint Replacement Center
1500 Owens St.
San Francisco, CA 94158
Phone: (415) 353–2808
Fax: (415) 885–3862

Hours: Monday to Friday, 8 a.m. – 5 p.m.

Cartilage Repair and Regeneration Center
1500 Owens St.
San Francisco, CA 94158
Phone: (415) 353–7566

Hours: Monday to Friday, 8 a.m. – 5 p.m.

Concussion and Brain Injury Program
1500 Owens St., Second Floor
San Francisco, CA 94158
Phone: (415) 353-1915
Fax: (415) 514-6075

Hours: Monday to Friday
8 a.m. – 5 p.m.

Sports Medicine Center
1500 Owens St.
San Francisco, CA 94158
Appointments: (415) 353–2808
Main: (415) 353–9400
Fax: (415) 885–3862

Hours: Monday to Friday, 8 a.m. – 5 p.m.

Conditions & Treatments

More about C. Benjamin Ma

Education

John Hopkins University School of Medicine 1996

Residencies

University of Pittsburgh Medical Center, Orthopedic Surgery 2002

Fellowships

University of Pittsburgh Medical Center, Musculoskeletal Research 2002
Hospital for Special Surgery, New York, Shoulder and Knee Surgery/Sports Medicine 2003

Selected Research and Publications

  1. Zhang AL, Feeley BT, Schwartz BS, Chung TT, Ma CB. Management of deep postoperative shoulder infections: is there a role for open biopsy during staged treatment? J Shoulder Elbow Surg. 2014 Jun 24.
  2. Zhang AL, Gates CH, Link TM, Ma CB. Abnormal origins of the long head of the biceps tendon can lead to rotator cuff pathology: a report of two cases. Skeletal Radiol. 2014 Jun 12.
  3. Dunn WR, Kuhn JE, Sanders R, An Q, Baumgarten KM, Bishop JY, Brophy RH, Carey JL, Holloway GB, Jones GL, Ma CB, Marx RG, McCarty EC, Poddar SK, Smith MV, Spencer EE, Vidal AF, Wolf BR, Wright RW. Symptoms of pain do not correlate with rotator cuff tear severity: a cross-sectional study of 393 patients with a symptomatic atraumatic full-thickness rotator cuff tear. J Bone Joint Surg Am. 2014 May 21; 96(10):793-800.
  4. Codsi MJ, Rodeo SA, Scalise JJ, Moorehead TM, Ma CB. Assessment of rotator cuff repair integrity using ultrasound and magnetic resonance imaging in a multicenter study. J Shoulder Elbow Surg. 2014 Apr 18.
  5. Kazakia GJ, Tjong W, Nirody JA, Burghardt AJ, Carballido-Gamio J, Patsch JM, Link T, Feeley BT, Benjamin Ma C. The influence of disuse on bone microstructure and mechanics assessed by HR-pQCT. Bone. 2014 Jun; 63:132-40.
  6. Nardo L, Karampinos DC, Lansdown DA, Carballido-Gamio J, Lee S, Maroldi R, Ma CB, Link TM, Krug R. Quantitative assessment of fat infiltration in the rotator cuff muscles using water-fat MRI. J Magn Reson Imaging. 2014 May; 39(5):1178-85.
  7. Su F, Hilton JF, Nardo L, Wu S, Liang F, Link TM, Ma CB, Li X. Cartilage morphology and T1? and T2 quantification in ACL-reconstructed knees: a 2-year follow-up. Osteoarthritis Cartilage. 2013 Aug; 21(8):1058-67.
  8. Chen JL, Allen CR, Stephens TE, Haas AK, Huston LJ, Wright RW, Feeley BT. Differences in mechanisms of failure, intraoperative findings, and surgical characteristics between single- and multiple-revision ACL reconstructions: a MARS cohort study. Am J Sports Med. 2013 Jul; 41(7):1571-8.
  9. Kuhn JE, Dunn WR, Sanders R, An Q, Baumgarten KM, Bishop JY, Brophy RH, Carey JL, Holloway BG, Jones GL, Ma CB, Marx RG, McCarty EC, Poddar SK, Smith MV, Spencer EE, Vidal AF, Wolf BR, Wright RW. Effectiveness of physical therapy in treating atraumatic full-thickness rotator cuff tears: a multicenter prospective cohort study. J Shoulder Elbow Surg. 2013 Oct; 22(10):1371-9.
  10. Radiographic findings in revision anterior cruciate ligament reconstructions from the Mars cohort. J Knee Surg. 2013 Aug; 26(4):239-47.
  11. Theologis AA, Haughom B, Liang F, Zhang Y, Majumdar S, Link TM, Ma CB, Li X. Comparison of T1rho relaxation times between ACL-reconstructed knees and contralateral uninjured knees. Knee Surg Sports Traumatol Arthrosc. 2014 Feb; 22(2):298-307.
  12. Farr J, Crawford DC, Diduch DR, Arendt EA, Ma CB, Li CS. Prospective, multi-center, pilot study to evaluate symptom relief in patients with medial knee osteoarthritis (OA) treated with the KineSpring® knee implant for load reduction - the SOAR protocol. J Long Term Eff Med Implants. 2013; 23(2-3):161-73.
  13. Jungmann PM, Li X, Nardo L, Subburaj K, Lin W, Ma CB, Majumdar S, Link TM. Do cartilage repair procedures prevent degenerative meniscus changes?: longitudinal t1? and morphological evaluation with 3.0-T MRI. Am J Sports Med. 2012 Dec; 40(12):2700-8.
  14. Kim JM, Ma CB. Quantitative MRI of the ACL-injured and reconstructed knee. Clin Sports Med. 2013 Jan; 32(1):21-36.
  15. Morgan JA, Dahm D, Levy B, Stuart MJ. Femoral tunnel malposition in ACL revision reconstruction. J Knee Surg. 2012 Nov; 25(5):361-8.
  16. Barry JJ, Lansdown DA, Cheung S, Feeley BT, Ma CB. The relationship between tear severity, fatty infiltration, and muscle atrophy in the supraspinatus. J Shoulder Elbow Surg. 2013 Jan; 22(1):18-25.
  17. Kothari A, Haughom B, Subburaj K, Feeley B, Li X, Ma CB. Evaluating rotational kinematics of the knee in ACL reconstructed patients using 3.0 Tesla magnetic resonance imaging. Knee. 2012 Oct; 19(5):648-51.
  18. Haughom BD, Souza R, Schairer WW, Li X, Ma CB. Evaluating rotational kinematics of the knee in ACL-ruptured and healthy patients using 3.0 Tesla magnetic resonance imaging. Knee Surg Sports Traumatol Arthrosc. 2012 Apr; 20(4):663-70.
  19. Theologis AA, Schairer WW, Carballido-Gamio J, Majumdar S, Li X, Ma CB. Longitudinal analysis of T1? and T2 quantitative MRI of knee cartilage laminar organization following microfracture surgery. Knee. 2012 Oct; 19(5):652-7.
  20. Schairer WW, Haughom BD, Morse LJ, Li X, Ma CB. Magnetic resonance imaging evaluation of knee kinematics after anterior cruciate ligament reconstruction with anteromedial and transtibial femoral tunnel drilling techniques. Arthroscopy. 2011 Dec; 27(12):1663-70.

Publications are derived from MEDLINE/PubMed and provided by UCSF Profiles, a service of the Clinical & Translational Science Institute (CTSI) at UCSF. Researchers can make corrections and additions to their publications by logging on to UCSF Profiles.