Estima Lock

Estima Lock is the coach-specific name for a toes-pointed-in variant of the straight ankle lock — a different ankle angle from the standard Achilles compression — attached to Braulio Estima’s competitive output in the early 2010s.

Etymology. Braulio Estima won the 2011 ADCC superfight title against Ronaldo “Jacaré” Souza, marking the period in which the Estima name became attached to a recognisable ankle attack from ashi garami and leg-entanglement positions. The label “Estima Lock” spread through no-gi grappling vocabulary during the same era, alongside the broader expansion of the leg lock game in submission-only and ADCC contexts. In current usage the term refers to two related but mechanically distinct configurations: the dedicated body-hug Estima Lock — covered separately at Estima Lock — and the toes-pointed-in straight-ankle-lock variant covered here.

Mechanics. The variant applies the straight ankle lock’s hip-extension finish at an angle that loads the ankle in inversion rather than the standard dorsiflexion. The grip and entry remain the straight ankle lock’s; the ankle angle at the finish is what shifts.

Cross-reference. The dedicated body-hug Estima Lock — distinct grip, distinct finishing mechanic — is at Estima Lock. The standard straight ankle lock mechanics are at Straight Ankle Lock.