Armbar

The armbar is the foundational elbow hyperextension submission. The attacking practitioner places the opponent’s arm across their hips — elbow down against the hip joint — and extends the hips upward while pulling the wrist downward. The elbow is loaded into hyperextension: past the natural 0° extension limit, into the posterior capsule and collateral ligaments.

This page is the family rather than a technique. Everything below — the finish mechanics, the 90-degree rule, the injury profile, the four generic defences — is what every armbar on the site has in common, and it is worth reading once before any of the individual pages.

What it deliberately does not contain is how to do one. An armbar from mount and an armbar from guard are related and different: the angle is made differently, the failure modes differ, and what a failed attempt costs differs most of all. Those live on the instance pages, listed below and grouped by the configuration line skill actually transfers along.

Ruleset context This technique is legal in all major competitive formats.

Elevated RiskArmbar is an elevated risk technique. The armbar loads the posterior elbow capsule and collateral ligaments through hyperextension. The elbow reaches its structural limit at 0° extension — any further extension is hyperextension and loads the ligaments directly. Fast hip drive closes the warning window to near-zero. Elbow injuries from armbars can be severe and have long recovery times. Speed is the primary risk factor. Serious injury can occur at or immediately past 0° extension — fast hip drive leaves minimal warning window.

If you are new to this technique: read this section before anything else. Understanding the danger is part of understanding the technique.

The person applying the technique is responsible for releasing immediately.

Communicate before drilling. Know your partner's experience level with this position.