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Home > Doctors > C. Benjamin Ma

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. 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 Mar 26.
  2. 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. 2013 Jan 31.
  3. 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.
  4. Kim JM, Ma CB. Quantitative MRI of the ACL-Injured and Reconstructed Knee. Clin Sports Med. 2013 Jan; 32(1):21-36.
  5. Morgan JA, Dahm D, Levy B, Stuart MJ. Femoral Tunnel Malposition in ACL Revision Reconstruction. J Knee Surg. 2012 Nov; 25(5):361-8.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. Haughom B, Schairer W, Souza RB, Carpenter D, Ma CB, Li X. Abnormal tibiofemoral kinematics following ACL reconstruction are associated with early cartilage matrix degeneration measured by MRI T1rho. Knee. 2012 Aug; 19(4):482-7.
  12. Baumgarten KM, Carey JL, Abboud JA, Jones GL, Kuhn JE, Wolf BR, Brophy RH, Cox CL, Wright RW, Vidal AF, Ma CB, McCarty EC, Holloway GB, Spencer EE, Dunn WR. Reliability of determining and measuring acromial enthesophytes. HSS J. 2011 Oct; 7(3):218-22.
  13. Chu T, McDonald E, Tufaga M, Kandemir U, Buckley J, Ma CB. Comparison of completely knotless and hybrid double-row fixation systems: a biomechanical study. Arthroscopy. 2011 Apr; 27(4):479-85.
  14. Cheung S, Dillon E, Tham SC, Feeley BT, Link TM, Steinbach L, Ma CB. The presence of fatty infiltration in the infraspinatus: its relation with the condition of the supraspinatus tendon. Arthroscopy. 2011 Apr; 27(4):463-70.
  15. Cheung SC, Allen CR, Gallo RA, Ma CB, Feeley BT. Patients' attitudes and factors in their selection of grafts for anterior cruciate ligament reconstruction. Knee. 2012 Jan; 19(1):49-54.
  16. Li X, Kuo D, Theologis A, Carballido-Gamio J, Stehling C, Link TM, Ma CB, Majumdar S. Cartilage in anterior cruciate ligament-reconstructed knees: MR imaging T1{rho} and T2--initial experience with 1-year follow-up. Radiology. 2011 Feb; 258(2):505-14.
  17. Theologis AA, Kuo D, Cheng J, Bolbos RI, Carballido-Gamio J, Ma CB, Li X. Evaluation of bone bruises and associated cartilage in anterior cruciate ligament-injured and -reconstructed knees using quantitative t(1?) magnetic resonance imaging: 1-year cohort study. Arthroscopy. 2011 Jan; 27(1):65-76.
  18. Wheeler DJ, Garabekyan T, Lugo R, Buckley JM, Jones C, Lotz M, Lotz JC, Ma CB. Biomechanical comparison of transosseous versus suture anchor repair of the subscapularis tendon. Arthroscopy. 2010 Apr; 26(4):444-50.
  19. Wong JE, Aviles SA, Ma CB. Intraosseous ganglion of the glenoid. Am J Orthop (Belle Mead NJ). 2010 Feb; 39(2):E19-21.
  20. Shin CS, Carpenter RD, Majumdar S, Ma CB. Three-dimensional in vivo patellofemoral kinematics and contact area of anterior cruciate ligament-deficient and -reconstructed subjects using magnetic resonance imaging. Arthroscopy. 2009 Nov; 25(11):1214-23.

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 by logging on to UCSF Profiles.

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