Mathias Masem, MD
Asst Clinical Professor
Orthopaedic Surgery
School of Medicine

Dr. Mathias Masem is an orthopedic surgeon with more than 20 years of experience in surgeries of the hand and upper extremities.

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Masem earned his medical degree at the University of Minnesota. He completed general surgery training and a residency in orthopedic surgery at UCSF, then completed a hand surgery fellowship under esteemed hand surgeon Dr. Jack Tupper in Oakland. He spent the following two years as an orthopedic research physician in Switzerland at the University of Bern and the Laboratory for Experimental Surgery. He furthered his training in hand and upper extremity surgery and microsurgery as a clinical and research fellow at Massachusetts General Hospital and Harvard Medical School.

In addition to his work at UCSF, Masem has a private practice in Oakland and is chief of hand surgery at Alta Bates Summit Medical Center. He also is a consultant on hand and upper extremity injuries for the University of California, Berkeley athletic teams.

Masem has authored numerous articles and given many lectures on upper extremity orthopedic surgery.

Education & Training

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• Fellowship, Hand Surgery UCSF Medical Center 1984
• Fellowship, Orthopaedic Surgery UCSF Medical Center 1984
• Residency UCSF Medical Center 1978
• MD University of Minnesota 1975

Websites

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• UCSF Department of Orthopaedic Surgery (orthosurgery.ucsf.edu)
• UCSF Health (ucsfhealth.org)

Publications (8)

Top publication keywords:
PoliticsRadius FracturesInsurance CoverageHIV InfectionsSexually Transmitted DiseasesCircumcision, MaleBone and BonesMedicaidHeparinMusclesStaphylococcus aureusRabbitsThrombosisSkinUlna Fractures

• Benefits of male circumcision.
  JAMA 2012 Masem M
• Efficacy of intraarterial heparin in maintaining microvascular patency: an experimental model.
  Plastic and reconstructive surgery 1991 Greenberg BM, Masem M, Wang YX, Rubin P, May JW
• Comparative bacterial clearances of muscle and skin/subcutaneous tissues with and without dead bone: a laboratory study.
  Plastic and reconstructive surgery 1990 Masem M, Greenberg BM, Hoffman C, Hooper DC, May JW
• The role of magnetic resonance imaging in assessing elevated intracompartmental pressure in the rabbit hindlimb.
  Plastic and reconstructive surgery 1988 Greenberg BM, Masem M, Ragozzino M, Schoenfeld DA, May JW
• Therapeutic value of intravenous heparin in microvascular surgery: an experimental vascular thrombosis study.
  Plastic and reconstructive surgery 1988 Greenberg BM, Masem M, May JW
• Reconstruction of post-traumatic deformity of the distal radius and ulna.
  Hand clinics 1988 Jupiter JB, Masem M
• Work disability before and after total hip arthroplasty. Assessment of effectiveness in reducing disability.
  Arthritis and rheumatism 1984 Nevitt MC, Epstein WV, Masem M, Murray WR
• Our political responsibilities as physicians.
  Minnesota medicine 1976 Masem M