Comparing the effectiveness of ultrasound guided versus blind genicular nerve block on pain, muscle strength with isokinetic device, physical function and quality of life in chronic knee osteoarthritis: a prospective randomized controlled study - Cankurtaran, D; Karaahmet, O Z; Yildiz, S Y; Eksioglu, E; Dulgeroglu, D; Unlu, E (Korean J Pain, 2020)