- Immediately after the Weil osteotomy,
the metatarsal head will move proximally. The
metatarsal formula will be controlled and/or restored.
(9)
- Next, the Spin® screw is placed. It is
not necessary to prepare the dorsal
bone since the Spin® screw is a self-drilling
and self-tapping screw which
is introduced by a power drill (Jacobs Chuck).
(10)
- Sometimes it is necessary to initiate
the snap-off effect by moving the drill forward
(osteoporotic bone), (11) whereas sometimes pre-drilling
using a
K-wire (1 mm diameter) is advised in extremely
solid cortical bone
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