| Foot Marrow Lock | |
 足髄固め, Soku Zui Gatame そくずいがため | |
| Information | |
|---|---|
| Fighting Style | Nadashinkage-ryuu |
| User(s) | Iron Kiba |
| Similar | n/a |
| Debut Information | |
| Manga Series | Koukou Tekkenden Tough |
| Manga Chapter | Chapter 221: Plato |
| Anime | n/a |
Foot Marrow Lock (足髄固め, Soku Zui Gatame), translated as Hardening of the Foot Marrow in the English Fan-Translation, is a special fighting technique.