. 2022 Sep 1;22(17):6596. doi: 10.3390/s22176596

Table 1.

Comparison of features and functions between PNAAFOs and PAAFOs.

Category	Device Name/Author	Design Features	Effects	Ref.
PNAAFOs	Ortholen drop foot brace	Half wrap ankle	1. Fix ankle	[12]
	Ortholen drop foot brace	Half wrap ankle	2. Provide lateral stability	[12]
	Ortop AFO LH	No wrap ankle	1. Limit plantarflexion	[12]
	Ortop AFO LH	No wrap ankle	2. Provide lateral stability	[12]
	Finer AFO	Full wrap ankle	1. Fix ankle	[12]
	Finer AFO	Full wrap ankle	2. Provide lateral stability	[12]
PAAFOs	Okawa, H	Simple hinge	1. Promote dorsiflexion	[12]
			2. Limit plantarflexion
			3. Provide lateral stability
	Yamamoto, S	Spring	1. Reduce knee hyperextension	[16]
			2. Increase walking speed
			3. Adjust the dorsiflexion auxiliary moment
	Yamamoto, S	Oil Damper	1. Promote dorsiflexion	[18]
			2. Correct varus/valgus
			3. Adjust orthosis stiffness
	Mataee, M	Shape Memory Alloys	1. Improve biomechanics	[22]
	Mataee, M	Shape Memory Alloys	2. Promote normal plantarflexion	[22]
	Amerinatanzi, A	Superelastic NiTi Spring	1. Greater range of motion	[23]
	Amerinatanzi, A	Superelastic NiTi Spring	2. Promote normal plantarflexion	[23]
	Waterval, N	Customed spring	1. Reduce walking EC	[24]
			2. Improve biomechanics
			3. Increase walking speed