الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
KR is a successful procedure that changed the quality of life of many
people around the world. That is why it is gaining popularity among the surgeons
and patients as well. When uncomplicated, excellent results are achieved whatever
the design used in TKR. That is evidenced in the results of most, if not all, the
recent studies, and the numbers of patients undergoing the operation are rising year
after year.
The designs of TKR systems have traditionally represented an attempt to
maintain a balance between more conforming designs that reduce contact stresses
and associated polyethylene wear but increase stresses at the fixation interface and
less conforming designs that generate less stress across the fixation interface but
result in greater contact stresses in the polyethylene secondary to a decreased
contact area.
In this study we tried to evaluate the early fu nctional results of the
MB prosthesis in comparison with the FB prosthesis in TKR. Prospective
study of 44 primary TKRs were done on 37 patients all of them
complaining of disabling osteoarthritis of the knee. All cases were done in
the Suez Canal university hospital and Ismailia health insurance complex
between October 2009 and November 2011. All our patients had treated
with PCL- substituting total knee surface prosthesis (Nex-Gen LPS). 22
knees had been replaced by FB design and 22 knees had been replaced by
MB design and patellar resurfacing was not done in all our cases. The
mean age was 58.82 years for FB group while it was about 56.86 years for
MB group.
Our aim of the study was to assess the functional results of both designs. The
patients were followed clinically and radiologically for a period of one year.
Summary & Conclusion
- 150 -The functional results of our patients were assessed by the knee society score
and the knee function score. Results showed a great improvement in all clinical
parameters of both scores within each design; however, non-statistically significant
difference was founded between both TKR prosthesis.
At the last follow up of the patients, the most important finding of our study
was that there was no statistical difference between the MB and FB prostheses with
respect to range of motion and clinical score. T he mean postoperative range of
motion in MB knee group was 114.90 with no statistically significant difference
obvious when compare with the mean postoperative range of motion in FB group
115.09 (P> 0.05). And the postoperative mean of pain score of both groups was
41.14 points and 44.09 points (P> 0.05) respectively, in addition the postoperative
mean of the stability score of was 23.5 points and 23.55 points (P> 0.05)
respectively in both groups.
The postoperative knee society score of both the MB and FB were 87.32
points and 90.73 points (P> 0.05) respectively. And the postoperative knee