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4Suture the volar plate

Using a fine rongeur, shape a transverse groove in the subchondral bone at the base of the middle phalanx ...

Make a transverse groove

Using a fine rongeur, shape a transverse groove in the subchondral bone at the base of the middle phalanx.
The groove must be perpendicular to the long axis of the middle phalanx in order to avoid lateral angulation.
This groove will later be used to reattach the distal edge of the volar plate.