Bachelor of Medicine, Juntendo University School Medicine, Tokyo, Japan, 1961. Doctor of Medicine, Juntendo University School Medicine, Tokyo, Japan, 1966. Doctor of Philosophy, Juntendo University School Medicine, Tokyo, Japan, 1966.
Chief orthopedic surgeon Izunagaoka Juntendo Hospital, 1966-1968. Chief orthopedic surgery Izumi-City Hospital, Izumishi, Japan, 1968-1970. Director department orthopedic surgery Rosai Hospital, Tokyo, 1970-1989.
Honorary research fellow department rheumatology University Birmingham, United Kingdom, 1990-1991. Owner, physician Matsumoto Orthopedic Clinic, Tokyo, since 1992. Expert medical witness Tokyo High and Low Courts, 1976-1990.
Special consultant Japan Supreme Court, 1980-1990.
Member American Association for the Advancement of Science, Japan Traumatology and Occupational Medicine Association (executive editorial board 1977-1989), Japanese Society for Surgery of the Hand (executive board 1982-1995), Japan Fracture Society (executive board 1986-1999).
Married Itsuko Matsumoto, March 25, 1960. Children: Noritsugu, Masako Nozawa, Junko Itoh, Hisako Takahashi.