The first atlas of arthroscopy, a major step in gaining wide acceptance of this operating technique. The color illustrations were prepared by an artist as available arthroscopes did not permit color photography. Watanabe was a pupil of Kenji Takagi (1888-1963) who in 1920 designed the first specialized arthroscope. Takagi was the first to use the arthroscope for operations on the inside of knee. However, he did not publish on the subject until 1932. See Clin. Ortho., 1982, 167, 6-8. Watanabe refined and developed the arthroscope. This atlas was co-authored with S. Takeda and H. Ikeuchi. Revised and enlarged second edition with color photographs through the arthroscope, Tokyo, Igaku Shoin, [1969].