He graduated Sapporo Medical University School of Medicine in 1995. Clinical fellow in Akita Univ in 2002-2006. Research fellow in Mayo clinic in 2007-2009. Consultant in Department of Orthopedic Surgery, Tohoku University School of Medicine since 2009 (Associate professor). Specialty: shoulder joint and Musculoskeletal Ultrasound. He has won numerous awards (14 awards) including JSS Takagishi awards (2006), AAOS best poster (2009), SECEC best poster (2009). Publication: 112 original articles, 51 books/book chapters, 54 reviews, 78 forum/lecture. Committee appointment: JOSKAS delegate, Japan ultrasound association delegate, Japan ultrasound association program committee, Japan shoulder society academic committee, East Japan Orthopaedic Association delegate, Shoulder arthroscopic meeting delegate, Sendai shoulder association secretariat, ASES corresponding member,