الفهرس 
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Abstract
Osteoarthritis of knee joints is one of the most common diseases of the locomotor system. The progress of the disease leads with time to impairment of functional capacity of limbs, worsening of muscle perfusion and trophic changes. The treatment which improves these patients aims at reducing its effects and slowing down of the progress of the disease.Both physical therapy and ozone therapy are efficient in reducing the pain.
The aim of the current study was to asses functional improvement in patients suffering from knee osteoarthritis treated by physical therapy alone, compared to those treated by physical therapy combined with ozone therapy.
This study included fifty patients randomly selected from those attending the Outpatient Clinic of Physical Medicine, Rheumatology and Rehabilitation Department, MostafaKamel Military Hospital in the period between July 2014 and September 2014. They were diagnosed according to ACR criteria for diagnosis of primary knee O.A.
Results can be summarized as follows:
The highest percent of the studied sample were females (64%). The mean age of the studied sample was 58.48±9.40 years. More than half of the sample (74%) were married. Nearly half of the studied sample (48%) were house wives, 30% were official workers and 22% were manual workers.
About 56% of the studied sample were obese and 40%were overweight, while only 4% were normal.BMI in the second group (31.29 ± 8.17 kg/m2) was higher than that in the first group (29.58±4.85 kg/m2).
The median disease duration of physical therapy (PT) group was 3 years, while in the group of physical therapy and ozone (PT+ Ozone) the median disease duration was 2 years. In more than three quarters of the studied sample (78%) standing was the commonest aggravating factor followed by walking (64%) and the lowest percent was for going down stair (12%). The majority of the studied sample (94%) reported rest followed by hot foments (26%) as relieving factor. More than half of the sample (64%) reported morning stiffness.