US 11,986,399 B2
Surgical method and instrumentation assembly for positioning an ankle prosthesis
Richard Garret Mauldin, Erie, CO (US); Yann Brunnarius, Chatuzange le Goubet (FR); and Delphine Henry, Saint-Ismier (FR)
Assigned to HOWMEDICA OSTEONICS CORP., Mahwah, NJ (US)
Filed by HOWMEDICA OSTEONICS CORP., Mahwah, NJ (US)
Filed on Apr. 14, 2022, as Appl. No. 17/720,541.
Application 17/720,541 is a continuation of application No. 16/675,711, filed on Nov. 6, 2019, granted, now 11,324,607, issued on May 10, 2022.
Application 16/675,711 is a continuation of application No. 15/044,441, filed on Feb. 16, 2016, granted, now 10,517,741, issued on Dec. 31, 2019.
Claims priority of provisional application 62/129,593, filed on Mar. 6, 2015.
Prior Publication US 2022/0233333 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/46 (2006.01); A61B 17/15 (2006.01); A61B 17/17 (2006.01)
CPC A61F 2/4606 (2013.01) [A61B 17/15 (2013.01); A61B 17/1739 (2013.01); A61F 2/4657 (2013.01); A61B 17/1775 (2016.11); A61F 2/4603 (2013.01); A61F 2002/4668 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A surgical instrumentation assembly for positioning an ankle prosthesis, the ankle prosthesis including a tibial implant and a talar implant, wherein the instrumentation assembly comprises: a talar alignment instrument adapted to be centered on a talus so as to be attached perpendicularly to the talus and including a front portion having at least two fins each projecting outwardly from a respective end of the front portion, each fin defining a slot to mark a direction perpendicular to the fin and so as to be aligned with a longitudinal axis of the tibia and a rotational axis of the talus such that each fin is arranged to be positioned in a respective gutter formed below a tibia and around a trochlea of the talus; and
a cutting block adapted to be securely fastened to the talar alignment instrument, the cutting block including a tibial alignment structure adapted to be attached to the tibia and configured to permit the cutting of (i) a surface of the talus and (ii) a surface of a distal portion of the tibia.