Purpose. To investigate the effect of Graston technique on hamstring flexibility in patients with knee osteoarthritis. Methods. Randomized controlled trial. Overall, 30 patients of both genders with age ranged from 38-50 years with moderate knee osteoarthritis (Kellgren & Lawrence grade 3′ moderate’) were recruited randomly from the outpatient clinic of Kafr El-Sheikh General hospital and the outpatient clinic of Faculty of Physical Therapy in Kafr El-Sheikh University and divided into two equal groups; Group (A) (control group) (15 subjects), received conventional treatment of knee osteoarthritis (in form of stretching exercise for hamstring muscle and strengthening exercise for quadriceps muscle) for 4 weeks, Group (B) (experimental group) (15 subjects), received the same conventional treatment plus Graston technique for 4 weeks. Pre- and post-treatment assessment using active knee extension test (AKET), sit and reach flexibility test (SRFT) and dynamic balance were done for all patients. Results. The comparison between both groups post-treatment revealed statistically significant improvement in AKET, as well as SRFT and dynamic balance (p < 0.05) in favor of experimental group (B). Conclusion. Graston technique have a significant effect on improving flexibility of hamstring muscle in patients with knee osteoarthritis.
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