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Determining Length of Screw
- At insertion of the K-wire, the appropriate
length of screw is determined from a measurer
(reference 119510ND)
- The measurer is placed so that the thin
side is aligned with the base of the K-wire
- Care should be taken to hold the measurer
in perfect alignment with the visible part
of the K-wire
- The appropriate screw length is then read
directly from the measurer (graduated from
0 to 90 mm), on the side marked "K-wire
200 mm"
- The surgeon may decide to add or deduct
a few millimeters to/from the length measured
by the ruller. For example, a few millimeters
may be deducted to ensure that the second
cortex will not be penetrated.
Important:
- The measurement
taken for the ruler/K-wire is derectly related
to the positioning of the K-wire and cannot,
therefore be considered ideal unless the
K-wire is correctly positioned
- The
positioning of the K-wire can be validated
by means of pre-operative x-ray or fluoroscopy
- The superior part of the measurer (119510ND)
allows for the control of the screw to be
implanted. The head of the I.CO.S.®
screw is positioned on top of it, the distal
part directed towards the thin part of the
measurer.
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