- Immediately after the Weil osteotomy,
the metatarsal head will move proximally. The
metatarsal formula will be controlled and/or restored.
- 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).
- Sometimes it is necessary to initiate
the snap-off effect by moving the drill forward
(osteoporotic bone), (11) whereas sometimes pre-drilling
K-wire (1 mm diameter) is advised in extremely
solid cortical bone