FH ORTHOPEDICS be POD TYLOS Arthrodese-Nail Manual - Página 6
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Imprimir página14 - Assembling the TYLOS™ im-
plantation guide - Lateral drill guide
253252
253261
253256
15 - Lateral locking
253257
253254
16 - Drilling for cortical screws
6
200 mm
LATERAL LOCKING
The posterior guide is removed to introduce the lateral guide on to the 2nd
branch of the fi xation nail holder, held in place by screw M5 (ref. 253681).
160 mm
A maximum of three proximal, and two distal, screws can be used. Markings
indicate the holes to be used depending on the length of the nail (160 or 200
mm classically; a specifi c lateral guide is delivered with the optional 250 mm
nail) (Fig. 14).
The procedure for percutaneous implantation is the same for each: assemble
the soft tissue retractor (ref. 253252) in the screw guide sleeve (ref. 253261)
and screw it into the centering guide sleeve (ref. 253256).
After a small skin incision, introduce the whole assembly until it comes into
contact with the bone (Fig. 15).
Once the soft tissue protector and screw guide sleeve have been removed,
assemble the guide for the 3.5 drill bit (ref. 253254) in the centering guide
sleeve that has remained in place and which allows cortical drilling (Fig. 16).
Direct reading of the graduations on the drill bit blocked on the second cor-
tical determine the length of the screw required.
If you estimate that the head will really stick out too much under the skin, it is
possible to countersink the cortical bone with 6/3 drill bit (ref. 253262) until
it is blocked (Fig. 17).
After removing the drill bit guide sleeve, it is possible to obtain a standard
measurement using the screw depth gauge (ref. 253260). The screw is intro-
duced into the centering guide sleeve on its screwdriver (ref. 257381) (Fig. 18).
In order to guide the screwdriver better, and once the screw is engaged in
the centering guide sleeve, it is possible to use again the guide sleeve for
calcaneal screws (ref. 253261).
The entire nail holder is then removed.
253262
17 – Countersinking to embed the
cortical screws
257381
253261
18 - Screwing of cortical screws