Table II. Lower Limb Range of Motion (ROM) of Robotic Orthosis in Sagittal Plane.

		Range of Motion in Sagittal Plane (degrees)
Lower Limb Joint Angles		Permissible [37]	Walking [38]	Designed
Hip	Flexion	122	20	50
	Extension#	10	11	15
Knee	Flexion	134	60	80
	Hyper-extension	0	0	0
Ankle	Dorsi-flexion	13	9	10
	Plantar-flexion	56	18	20

^#The permissible range of hip extension is as reported in reference [37]. As recorded in reference [39], the permissible range has a range of to . The discrepancies of the value could be due to measuring method. The designed ROM for hip extension is .