The Kodokan goshin-jutsu kata as well as several contemporary judo texts1 demonstrate various wristlocks as a self defence technique, similar to how atemi were also taught. However since at least 1908, they have been barred from use in randori or competition.2

Were wristlocks ever permitted before this? Since BJJ notably allows wristlocks as submissions, I had assumed that they were permitted in early judo.

  1. enter image description here My Method Of Self-Defence, Mikinosuke Kawaishi

  2. Even those above shodan rank are not permitted to perform the kwansetsuwaza on a finger-joint or wrist, while playing the randori contest.
    Judo: Japanese Physical Culture, Sumitomo Arima (1908)

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