Buke Sumo (武家相撲 pre-Edo martial sumo) was one of the foundations of Ryōi Shintō-ryū Jūjutsu (良移心当流 柔術), with it's founder - Fukuno Shichirouemon Masakatsu (福野七郎右衛門正勝) being a ‘Meishu’ (名手 – master) of Sumo.

Although later, this 18th Century Sumo Densho (相撲伝書)shows Kyūsho points:

相撲伝書（享保寅年）

Sumō Densho (Kyōhō Toradoshi – 1722 and 1734)
Sumō Tradition Manual – Kyōhō Era: Years of the Tiger (1722) and (1734)

Illustration Title (Right Side Vertical Text):

相撲伝書に描かれている人体禁所中図 及び 相撲の禁し手
Sumō Densho ni egakarete iru jintai kinsho chūzu oyobi sumō no kinshite
Diagram of Forbidden Areas of the Human Body in the Sumō Densho and Prohibited Techniques in Sumo

[Diagram Labels – Anatomical Kyūsho Points]

Here is a full transcription and translation of the labels pointing to vital points on the human body illustration:

頭巓（トウテン） — Tōten — Crown of the head
額巓（ガクテン） — Gakuten — Forehead
顱巓（ロテン） — Roten — Top of the skull
喉（ノド） — Nodo — Throat
肩井（ケンセイ） — Kensei — Base of the neck/shoulder well
肩髃（ケング） — Kengu — Shoulder joint
右根（ウコン） — Ukon — Root of the right arm
左根（サコン） — Sakon — Root of the left arm
右頬骨（ウキョウコツ） — Ukyōkotsu — Right cheekbone
左頬骨（サキョウコツ） — Sakyōkotsu — Left cheekbone
気海（キカイ） — Kikai — Centre of abdomen (Lower dantian/navel area)
鳩尾（キュウビ） — Kyūbi — Solar plexus
膻中（タンチュウ） — Tanchū — Centre of chest
脇肋（キロク） — Kiroku — Side ribs
神闕（シンケツ） — Shinketsu — Centre of the navel
陰陵（インリョウ） — Inryō — Inside of the thigh
陰嚢（インノウ） — Innō — Testicles/genital region
腎臓（ジンゾウ） — Jinzō — Kidneys
[Text Below the Diagram — Descriptions of Striking and Prohibited Techniques]

Each line explains a specific point and method of attack or prohibition. Here is the translation:

頭巓（トウテン）
Strike the crown of the head with a fist or similar. Prohibited.
額巓（ガクテン）
Strike with the head or fist. Extremely dangerous.
顱巓（ロテン）
Strike the top of the skull; causes great harm. Forbidden.
喉（ノド）
Strike or press into the throat. Immediately incapacitating.
右根（ウコン）・左根（サコン）
Twist the root of the arms; use leverage to throw the opponent off balance.
右頬骨・左頬骨（ウキョウコツ・サキョウコツ）
Strike the cheekbones with a palm heel or fist. Forbidden in competition.
気海（キカイ）
Strike or push the lower abdomen. Dangerous if forceful.
膻中（タンチュウ）
Strike the chest centre to disturb breathing and rhythm.
鳩尾（キュウビ）
Solar plexus; press or strike. Prohibited in matches.
脇肋（キロク）
Strike into the ribs. Potentially damaging.
神闕（シンケツ）
Strike around the navel area. Can cause great disruption of internal energy.
陰陵（インリョウ）
Strike the inner thigh — can be disabling if targeted correctly.
陰嚢（インノウ）
Strike or squeeze the testicles — absolutely forbidden.
腎臓（ジンゾウ）
Blows to the kidney area are strictly prohibited.
Summary

This document illustrates and explains the Kyūsho (急所 – Vital Points) of the human body as recognised in Sumō Densho from the early Edo period (Kyōhō era). It describes both:

Pressure Points (禁所 – Kinsho)
Prohibited Techniques (禁し手 – Kinshite)
These techniques are forbidden due to their potential to seriously harm or disable an opponent, and such knowledge was restricted to sumō practitioners and traditional martial artists of the period.

(Translation by ChatGPT on 10th April 2025)