8
BIOSTEP EVO: fitting and alignment instructions
Static alignment
Divide the socket in half.
The midline of the socket should run 25-50 mm
anterior to the midline of the male pyramid with
top of pyramid parallel to the ground with a 10
mm heel rise.
For the initial bench alignment run the midline of
the socket through the front of the top pyramid
bolt as shown.
Dynamic alignment
Adapt the prosthetic alignment adjustments and/or sliding adjustments in order to
ensure correct heel contact, easy roll-over, and optimal shifting of weight onto the
contralateral side. For transtibial amputees please ensure there is physiological knee
flexion during stance phase.
Adjusting the heel resistance
The foot is supplied with a heel wedge to increase the heel stiffness. To soften the
heel, shorten the wedge by cutting along the cut lines. For temporary installation,
secure with double sided tape. For permanent installation, secure the heel wedge with
Loctite 495 Instant Adhesive (or equivalent).
Green Wedge is provided with 22-27
BioStep EVO
Purple Wedge is provided with 28-30
BioStep EVO
