Primary knee osteoarthritis provokes pain and disfunction is thought mediated by joint damage and changes in joint homeostasis. Recently, investigations focused in impaired neuromuscular system as a contribution to the above mentioned symptoms in the knee osteoarthritis syndrome explore the use of dry needling. Dry needling is a therapeutic approach for decreasing pain and improve function with high recommended evidence (grade A) effectiveness for upper-quarter myofascial pain, but poorly understood in knee osteoarthritis patients.