5
4. BONE GRAFT REAMING
Slide the Central Piston Guide over the K-wire and place it
on the reamed humeral head surface. Use a HEX 3.5
screwdriver to tighten the screw inside the instrument in
order to lock it on the K-wire.
3.
The Central Piston Guide is available in two different height
options, depending on the desired reaming depth.
Connect the Modular Trephine - Graft Reamer with the
Modular Trephine - K-wire Adaptor.
4.
Assemble the Reamer Handle with the T-handle and
connect them to the previously assembled instruments.
5.
Slide this construct on the K-wire and the Central Piston
Guide. Ream the humeral head until the desired depth is
reached. The numbers on the external surface of the Graft
Reamer represent the height of the bone graft.
If the Central Piston Guide is used as a mechanical stop,
the maximum bone reaming depth is 10mm or 20mm,
depending on the selected Central Piston Guide. If a higher
bone graft height is necessary, unscrew the Central Piston
Guide, remove it and proceed with the reaming.
6.
Extract the instruments.
Select the desired length of the Central Peg Reamer and
connect it to the Reamer Handle. Slide the assembled
reamer over the K-wire and use a power tool to ream until
the mechanical stop is reached.
7.
Remove the instruments.
Alternatively, it is possible to perform the steps described
above in only one phase.
In this case, connect the Modular Trephine – Central peg
reamer to the Modular Trephine – Graft reamer and
assemble them with the Reamer Handle and T-handle.