| |
|
|
| |
Compaction Rasp & Cutting
Guide System |
|
| |
|
|
| |
Joint replacement surgery whether partial or total,
aims to exactly replicate the original biomechanical characteristics
of the Hip, especially with regard to ‘Neck Height’ and ‘Offset’.
Rigorous pre-operative planning is considered mandatory to achieve
these goals. |
|
| |
|
|
| |
Contemporary
hemi-replacement surgery suffers on two counts. |
|
| |
The absence of reliable instrumentation, which
compels the operating surgeon to resort to ‘eyeballing’, a procedure
which increases the risk of inaccuracies in the level and angle of
the ‘final neck cut’.
Poor seating of the prosthesis collar, which results as an
inevitable consequence and sub-optimal load transfer, which
increases the risk of premature prosthetic failure. |
|
| |
|
|
| |
The new ‘FITRITE’, instrumentation has been designed to address and
resolve these specific problems associated with contemporary
hemi-replacement surgery. This well conceived instrumentation system
consists of- |
|
| |
|
|
| |
1. The ‘FitRite’ Compaction
Rasp |
|
| |
The special Rasp design compacts cancellous bone
against the internal walls of the femoral canal. The in-built
undersizing along the medial border enables an optimal “press-fit”
of the prosthesis stem in the canal, while retaining maximum bone
stock along the calcar femorale. The unique feature of the ‘FITRITE’
Compaction Rasp is the cutting surface which ensures an exact match
between the neck cut and the angle of the prosthesis collar . This
automatically ensures optimal load transfer from the prosthesis to
the femur. |
|
| |
|
|
| |
2. The ‘FITRITE’ Cutting
Guide |
|
| |
This revolutionary, modular instrument is the first
of its kind. It enables the operating surgeon to not only decide the
optimum level of the neck-cut but also control the angle of version
of the prosthesis. Three positions ( for prosthesis head diameters
ranging from 37-43mm, 45-49mm and 51-57mm ) enable a near-exact
replication of the original biomechanics of the hip, including neck
height and offset. |
|
| |
|
|
| |
The Version-control and
Rasp extraction device. |
|
| |
This instrument works on the well established
“slotted hammer” principle and enables control of the version angle
while allowing an “in-out-in” motion during insertion of the
‘FITRITE’ Modular cutting guide, handle and Compaction Rasp
assembly. |
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
| |
|
|
