NINJA Progressive Spinal System
Fitting information
Donning the Brace
Center the NINJA on the
patient’s back. (fig. a)
Place the left end of the
belt against the abdomen.
(fig. b)
Pull the right end of the
belt tight and place it
down, palm first, then roll
it on to the left end of the
belt. (fig. c)
Pull the ring of the one-
pull cinch strap (left side
of the belt) tight, holding
it out away from the body.
(fig. d)
Place the one-pull cinch
strap down onto the belt
to secure it. (fig. e)
Tip: The one-pull cinch
strap may be placed
anywhere on the outside
surface of the NINJA belt.
What is Mechanical Advantage?
Mechanical Advantage is a physics term meaning multiplying a force using, in this
case, “pulleys.” The NINJA has a 6X mechanical advantage. That is, when the patient
pulls the strap to tighten the brace, their muscle strength is multiplied 6 times!
What is “Progressive” Orthosis?
A progressive brace is one that allows reduced support and control as the patient
heals. All NINJAs are progressive, but the NINJA PROPAK is a 4-stage progressive
brace: State 1 – rigid back shell, Stage 2 – semi-rigid back plate, Stage 3 – no back
plate, Stage 4 – no front plate.
Setting the Lordosis/Kyphosis
Start by removing the
black foam padding.
Lordosis (LSO and Mid
LSO only)
Lay the posterior plate
over a table edge and
loosen the hood end of the
lordosis strap. (fig. f)
Bend the plate to the
desired angle, tighten the
adjustable lordosis strap,
and press the hook and
loop together again (fig. g)
Tip: Exaggerate the
lordosis. The plate will
flatten somewhat when the
brace is tightened.
Kyphosis (LSO only)
Lay the posterior plate
on a sturdy surface and
loosen the kyphosis strap.
(fig. h)
Mold the plate to the
desired kyphosis. Tighten
and reattach the hook and
loop strap. (fig. i)
Tip: The lordosis and
kyphosis tend to
counteract each other.
Re-check the lordosis after
setting the kyphosis.
Replacing the Back Shell/Plate
Start by removing the
black foam padding.
Note: Your NINJA likely
came with a back plate
or shell attached. Follow
these instructions only
if you need to install a
different plate or shell.
Unfasten the outside end
of the two belt retainer
straps. The retainer strap
should remain connected
to the hook and loop coin.
(fig. j)
Pull the straps out through
the top slots and lay them
down below the posterior
panel. (fig. k)
Slide the retainer strap
under the bottom
horizontal retaining guide
on the belt. (fig. l)
Slide the strap under the
upper horizontal retaining
guide on the belt. (fig. m)
Feed the straps through
the slots they were
removed from, pull them
tight and refasten the hook
and loop. (fig. n)