Numelock II Polyaxial Locking System - Stryker

Operative Technique
Step Five – Locking Screw
Placement
• Using the Cutting Screwdriver
(Ref. No. TASH7), insert the
Numelock® locking screw as far as
possible without locking the ring
mechanism. Prevent rotation of the
ring mechanism by engaging the
Holding Spanner’s (Ref. No. CESH7)
teeth with the corresponding slots in
the ring (See Figure 5).
Step Six – Final Adjustments/
Repositioning/Transport
• To adjust the position of the bone
with respect to the plate or to pull
a bone segment closer to the plate,
use the Ring Driver (Ref. No. TVESH7).
By turning the ring clockwise with
the Ring Driver, the bone is moved
closer to the plate as required.
Note: If using this feature to realign
two bone segments, the
orientation of screw placement
must be parallel to the plane of
the osteotomy line associated
with these two segments.
Step Seven – Final Locking
• When all desired adjustments are
complete, lock each Numelock II®
screw with the Screwdriver while
holding the ring steady with the
Holding Spanner. Firm tightening
of the screws ensures stability.
After locking, it is no longer possible
to rotate the ring without damaging
the locking mechanism.
Figure 5
Repeat Steps Three through Five
for all screw positions. If transport
or repositioning of a bone segment
is required, see Step Six.
Note: To guarantee maximum stability,
fill all Numelock II® holes with
a locking screw of appropriate
length.
Postoperative Care
The physician’s education, training and
professional judgment must be relied
upon to establish the most appropriate
postoperative care regimen for each
individual patient. The following
recommendations may be considered
at the surgeon’s discretion:
• Some patients may need to spend
several days in the hospital after an
osteotomy procedure. Deep muscle
compartment drains may need to be
considered postoperatively as well as a
suitable pain management protocol.
• If warranted, continuous passive
motion may begin during the second
postoperative day to help restore
mobility. When appropriate,
toe-touch weight-bearing with
crutches may follow.
• Follow-up radiographs are
recommended at six weeks after
surgery. Weight-bearing may be
gradually increased at the surgeon’s
discretion or when there is
radiographic evidence of union.
Full weight-bearing may begin when
there is full consolidation of the
osteotomy site, typically at around
eight to ten weeks for men and ten
to twelve weeks for women.
8