Universal HEvans™Plate
The Gorilla HEvans plate was designed for use with the Evans Calcaneal Osteotomy.
The plate uses a 3 screw fixation construct to support the graft placed into the
osteotomy and helps to prevent graft subsidence with subsequent loss of calcaneal
length seen in the early post-operative period due to graft resorption.
The design allows for a single proximal screw to be placed in the calcaneus with
two distal screws placed in the anterior fragment of the calcaneus. Dual point
fixation at the distal fragment mitigates the prospect of rotation of the distal
fragment with the calcaneocuboid anatomy. The posterior aspect of the plate is
tapered to prevent peroneal tendon irritation in the location of the plate.
The HEvans plate is low profile (1.1 mm), with a tapering of the thickness to
0.5 mm toward the end to prevent soft tissue irritation.
Paragon 28®'s Design Rationale
Why a 3 hole plate? Paragon 28 chose to design a 3 hole plate option for the
Evans Calcaneal Osteotomy procedure to allow for less potential for soft tissue
irritation at the posterior aspect, where interference with the peroneal tendons
and/or sural nerve is a risk. The 3 hole HEvans plate provides rotational stability
for this procedure because of the large, flat calcaneocuboid joint.
Because rotation about the proximal hole would require an arched path of the distal fragment,
this is blocked by the calcaneocuboid joint.
