... 64-69 Nguyen Van Thach, Dinh Ngoc Son, Nguyen Le Bao Tien, Nguyen Hoang Long, Do Manh Hung, Dinh Manh Hai, Tran Quoc Khanh (2012), "Researching on applying device interspinous assisted motion into ... in area (mm square) 141.14 50.589 Table 3.5 Classify the triangle area due to the slide of endoscopic instruments Triangle Slide through canule (mm square) Slide through tube (mm square) S≤38.46 ... lowered maximum, intermediate and maximum hyperextension; angling three quarters to the left or aim to eliminate damage loss strong, physically waist Computerized tomography (CT scan): to assess...