Skip to Content


This article is a stub. You can help by expanding it.

Technique - Aikido - Beginner - Yellow Belt

Animated .GIF of Shomen uchi Ikkajo Osae Ichi


Ikkajo (First control) - Comes in Nage (throw) and Osae (pin) forms

Arm control, primarily through contact between Sh'te's palm and Uke's elbow, used to roll the shoulder forward and pitch Uke face-first towards the ground

The two starting techniques are:

  • Shomen uchi (Front strike) Ikkajo Osae (1st Control Pin) Ichi (#1) - Sh'te enters strongly, Uke "pulling back"
  • Shomen uchi (Front strike) Ikkajo Osae (1st Control Pin) Ni (#2) - Uke enters strongly, Sh'te pivots away

Kihon Waza Forms

By Shodan (1st Degree black belt) Yoshinkan Aikido students are expected to be able to perform the following variations on Ikkajo:

  • Shomen uchi ikkajo osae ichi & ni - Tachi & suwari waza
  • Yokomen uchi ikkajo osae ichi & ni - Tachi & suwari waza
  • Katate mochi ikkajo osae ichi & ni  - Tachi & suwari waza
  • Kata mochi ikkajo osae ichi & ni  - Tachi & suwari waza
  • Hiji mochi ikkajo osae ichi & ni  - Tachi & suwari waza
  • Ushiro ryote mochi ikkajo osae ichi & ni
  • Ushiro katate mochi ikkajo osae ichi & ni
  • Ushiro ryohiji mochi ikkajo osae ichi & ni
  • Ushiro eri mochi ikkajo osae ichi & ni

Collaboration for a Public Resource

The wealth of content in a Wiki site depends on the participation of its visitors making incremental improvements.

Because of the contentious nature of this content, and the ubiquity of spam, until a large community of defenders of the content exists (usually past authors and other interested parties), we require contributors to create a free account here. Users can then contribute, for example:

  • Editing a page using the 'Edit' tab.
  • Creating new pages by adding a link to potential topics, using [[ ]]
  • Contributions can be point form, expanding an existing paragraph, original writing, helping correct spelling, grammar or clarity, adding wiki syntax to non-wiki content, adding links to existing internet content, etc… Additions need not be complete or even well-crafted in order to move the content building forward.
  • Discussing page concepts and content using the 'Discussion'.
  • 'Watching' pages that you've edited or topics that interest you, and correct vandalism. Conceptual disagreements should be moved to the Discussion area.