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*Gamal Salaheldin Elmorsy, M.D.


Objective: A prospective study with a total of 20 patients with Grade 1
or 2 osteoarthritis (Kellgren and Lawrence). All patients was treated
using intra-articular applications of autologous PRP Clinical outcome
was evaluated using IKDC and WOMAC, before treatment and at 6
weeks, 3 months and 6 months after treatment The visual analog scale
for pain and overall satisfaction with the procedure. The aim of this
study was planned to evaluate intra articular injection of PRP on
primary knee osteoarthritis which were refractory to conservative
Treatment.Methods: This study is carried out on 20 patients suffering
from primaryknee osteoarthritis grade1, grade2. This study was done
during theperiod from August 2011 to September 2012 with follow up
periodranged from 6 months to 12 months with average follow up period 9months.There
were 14 female and 6 male patients. Their age rangebetween 35 and 55 years with average 44
years. While bilateral footaffection was in 7 patients in whom the more complaining side
wasinjected. The period of complaint before operation varied between 1-5 years with average
2.3years.All patients were treated by intra articular injection of PRPafter failure of
conservative treatment for at least three months. Thepost injection follow up period was nine
months. This short termfollow up had no statistically significant effect on the final Outcome.Results: The clinical results were classified on subjective base and weregraded as Excellent
in seven patients (35%), Good in eight patients (40%), Fair in two patients (10%) and poor in
three patients (15%).The excellent and good results were considered as satisfactory, andthe
unsatisfactory included the fair and the poor results. Thus, satisfactory results were found in
15 patients (75%), and theunsatisfactory ones were found in 5 patients (25%).The average
age was 44 years. The highest incidence ofsatisfactory results was in the age group (below 40
years); whileresults were close in the other age groups. Age had statisticallysignificant effecton the results. The study included 14 female and 6 male patients. Malepatients gave better results than female. A satisfactory result infemale was 71.4 % while in male it was 83.3%. Sex had nostatistically significant effect on the results. The period of complaint before operation varies between 1-5years withaverage 2.3 years. Period of complaint had statisticallysignificant effect on results. The best result was (satisfactory 100%)in patients complaining for less than three years while the worst wasin patients complaining for more than five years (unsatisfactoryin60%).There were 13 patients with unilateral complaint and 7patients with bilateral knee osteoarthritis. Best results were inunilateral cases (84.6% satisfactory) while in bilateral cases only57.1% showed satisfactory results. Laterality had significant effect onresults. The results of this study were discussed and compared with other studies.Conclusion: The preliminary short-term results of this study areencouraging and indicate that treatment with autologous PRP intraarticularinjections is safe, and may be useful for the treatment of early degenerative articular pathology of the knee, aiming to reducepain and improve knee function and quality of life. However, randomized controlled studies will be needed to confirm the realpotential and to evaluate the durability of this procedure, to betteridentify indication criteria and to improve application modalities. Further studies evaluating this new technique for treating cartilage degenerative pathology are in progress.

Keywords: Knee Osteoarthritis, Intra-articular injection of Platelet Rich Plasma.

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