A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses

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SURMEN, Hasan Kemal;AKALAN, Nazif Ekin;FETVACI, Mahmut Cuneyt;ARSLAN, Yunus Ziya.
A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 64, n.3, p. 185-194, june 2018. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/a-novel-dorsal-trimline-approach-for-the-passive-dynamic-ankle-foot-orthoses/>. Date accessed: 16 jul. 2019. 
doi:http://dx.doi.org/10.5545/sv-jme.2017.4987.
Surmen, H., Akalan, N., Fetvaci, M., & Arslan, Y.
(2018).
A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses.
Strojniški vestnik - Journal of Mechanical Engineering, 64(3), 185-194.
doi:http://dx.doi.org/10.5545/sv-jme.2017.4987
@article{sv-jmesv-jme.2017.4987,
	author = {Hasan Kemal Surmen and Nazif Ekin Akalan and Mahmut Cuneyt Fetvaci and Yunus Ziya Arslan},
	title = {A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {64},
	number = {3},
	year = {2018},
	keywords = {dorsal trimline; ankle-foot orthosis; finite element analysis; computer-aided design; 3D optical scanning},
	abstract = {An ankle-foot orthosis (AFO) is an externally applied assistive device that encompasses the lower leg, ankle, and foot of the human body. In the current one-piece passive-dynamic AFO design, the trimming process is performed from lateral and medial parts of the ankle to ensure desired rotational displacement (hereafter referred to as Design I). In most cases, stress concentrations occurring over the trimmed regions during walking can cause permanent damage to the AFO. In this study, to reduce the stress concentration and ensure a homogeneous stress distribution, a new trimming approach is presented, in which the trim zones were transferred from lateral and medial to dorsal (hereafter referred to as Design II). Finite element analyses of the Designs I and II models were carried out. Displacement and von Mises stress values for both models under the same loading and boundary conditions were obtained. Maximum displacement values were 8.51 mm and 9.05 mm for Design I and Design II, respectively. Maximum stress values were 15.19 MPa and 6.70 MPa for Design I and Design II, respectively. For the similar range of motion of ankle joint, the novel design produced less stress and more homogeneous stress distribution than the currently used design, thus indicating that Design II would be more resistant to plastic deformation than Design I.},
	issn = {0039-2480},	pages = {185-194},	doi = {10.5545/sv-jme.2017.4987},
	url = {https://www.sv-jme.eu/article/a-novel-dorsal-trimline-approach-for-the-passive-dynamic-ankle-foot-orthoses/}
}
Surmen, H.,Akalan, N.,Fetvaci, M.,Arslan, Y.
2018 June 64. A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 64:3
%A Surmen, Hasan Kemal
%A Akalan, Nazif Ekin
%A Fetvaci, Mahmut Cuneyt
%A Arslan, Yunus Ziya
%D 2018
%T A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses
%B 2018
%9 dorsal trimline; ankle-foot orthosis; finite element analysis; computer-aided design; 3D optical scanning
%! A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses
%K dorsal trimline; ankle-foot orthosis; finite element analysis; computer-aided design; 3D optical scanning
%X An ankle-foot orthosis (AFO) is an externally applied assistive device that encompasses the lower leg, ankle, and foot of the human body. In the current one-piece passive-dynamic AFO design, the trimming process is performed from lateral and medial parts of the ankle to ensure desired rotational displacement (hereafter referred to as Design I). In most cases, stress concentrations occurring over the trimmed regions during walking can cause permanent damage to the AFO. In this study, to reduce the stress concentration and ensure a homogeneous stress distribution, a new trimming approach is presented, in which the trim zones were transferred from lateral and medial to dorsal (hereafter referred to as Design II). Finite element analyses of the Designs I and II models were carried out. Displacement and von Mises stress values for both models under the same loading and boundary conditions were obtained. Maximum displacement values were 8.51 mm and 9.05 mm for Design I and Design II, respectively. Maximum stress values were 15.19 MPa and 6.70 MPa for Design I and Design II, respectively. For the similar range of motion of ankle joint, the novel design produced less stress and more homogeneous stress distribution than the currently used design, thus indicating that Design II would be more resistant to plastic deformation than Design I.
%U https://www.sv-jme.eu/article/a-novel-dorsal-trimline-approach-for-the-passive-dynamic-ankle-foot-orthoses/
%0 Journal Article
%R 10.5545/sv-jme.2017.4987
%& 185
%P 10
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 64
%N 3
%@ 0039-2480
%8 2018-06-26
%7 2018-06-26
Surmen, Hasan, Nazif Ekin Akalan, Mahmut Cuneyt Fetvaci, & Yunus Ziya Arslan.
"A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses." Strojniški vestnik - Journal of Mechanical Engineering [Online], 64.3 (2018): 185-194. Web.  16 Jul. 2019
TY  - JOUR
AU  - Surmen, Hasan Kemal
AU  - Akalan, Nazif Ekin
AU  - Fetvaci, Mahmut Cuneyt
AU  - Arslan, Yunus Ziya
PY  - 2018
TI  - A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2017.4987
KW  - dorsal trimline; ankle-foot orthosis; finite element analysis; computer-aided design; 3D optical scanning
N2  - An ankle-foot orthosis (AFO) is an externally applied assistive device that encompasses the lower leg, ankle, and foot of the human body. In the current one-piece passive-dynamic AFO design, the trimming process is performed from lateral and medial parts of the ankle to ensure desired rotational displacement (hereafter referred to as Design I). In most cases, stress concentrations occurring over the trimmed regions during walking can cause permanent damage to the AFO. In this study, to reduce the stress concentration and ensure a homogeneous stress distribution, a new trimming approach is presented, in which the trim zones were transferred from lateral and medial to dorsal (hereafter referred to as Design II). Finite element analyses of the Designs I and II models were carried out. Displacement and von Mises stress values for both models under the same loading and boundary conditions were obtained. Maximum displacement values were 8.51 mm and 9.05 mm for Design I and Design II, respectively. Maximum stress values were 15.19 MPa and 6.70 MPa for Design I and Design II, respectively. For the similar range of motion of ankle joint, the novel design produced less stress and more homogeneous stress distribution than the currently used design, thus indicating that Design II would be more resistant to plastic deformation than Design I.
UR  - https://www.sv-jme.eu/article/a-novel-dorsal-trimline-approach-for-the-passive-dynamic-ankle-foot-orthoses/
@article{{sv-jme}{sv-jme.2017.4987},
	author = {Surmen, H., Akalan, N., Fetvaci, M., Arslan, Y.},
	title = {A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {64},
	number = {3},
	year = {2018},
	doi = {10.5545/sv-jme.2017.4987},
	url = {https://www.sv-jme.eu/article/a-novel-dorsal-trimline-approach-for-the-passive-dynamic-ankle-foot-orthoses/}
}
TY  - JOUR
AU  - Surmen, Hasan Kemal
AU  - Akalan, Nazif Ekin
AU  - Fetvaci, Mahmut Cuneyt
AU  - Arslan, Yunus Ziya
PY  - 2018/06/26
TI  - A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 64, No 3 (2018): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2017.4987
KW  - dorsal trimline, ankle-foot orthosis, finite element analysis, computer-aided design, 3D optical scanning
N2  - An ankle-foot orthosis (AFO) is an externally applied assistive device that encompasses the lower leg, ankle, and foot of the human body. In the current one-piece passive-dynamic AFO design, the trimming process is performed from lateral and medial parts of the ankle to ensure desired rotational displacement (hereafter referred to as Design I). In most cases, stress concentrations occurring over the trimmed regions during walking can cause permanent damage to the AFO. In this study, to reduce the stress concentration and ensure a homogeneous stress distribution, a new trimming approach is presented, in which the trim zones were transferred from lateral and medial to dorsal (hereafter referred to as Design II). Finite element analyses of the Designs I and II models were carried out. Displacement and von Mises stress values for both models under the same loading and boundary conditions were obtained. Maximum displacement values were 8.51 mm and 9.05 mm for Design I and Design II, respectively. Maximum stress values were 15.19 MPa and 6.70 MPa for Design I and Design II, respectively. For the similar range of motion of ankle joint, the novel design produced less stress and more homogeneous stress distribution than the currently used design, thus indicating that Design II would be more resistant to plastic deformation than Design I.
UR  - https://www.sv-jme.eu/article/a-novel-dorsal-trimline-approach-for-the-passive-dynamic-ankle-foot-orthoses/
Surmen, Hasan, Akalan, Nazif, Fetvaci, Mahmut, AND Arslan, Yunus.
"A Novel Dorsal Trimline Approach for Passive-Dynamic Ankle-Foot Orthoses" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 64 Number 3 (26 June 2018)

Authors

Affiliations

  • Istanbul University, Vocational School of Technical Sciences, Department of Automotive Technology, Turkey
  • Istanbul Kültür University, Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Turkey
  • Istanbul University, Faculty of Engineering, Department of Mechanical Engineering, Turkey
  • Istanbul University, Faculty of Engineering, Department of Mechanical Engineering, Turkey

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 64(2018)3, 185-194

10.5545/sv-jme.2017.4987

An ankle-foot orthosis (AFO) is an externally applied assistive device that encompasses the lower leg, ankle, and foot of the human body. In the current one-piece passive-dynamic AFO design, the trimming process is performed from lateral and medial parts of the ankle to ensure desired rotational displacement (hereafter referred to as Design I). In most cases, stress concentrations occurring over the trimmed regions during walking can cause permanent damage to the AFO. In this study, to reduce the stress concentration and ensure a homogeneous stress distribution, a new trimming approach is presented, in which the trim zones were transferred from lateral and medial to dorsal (hereafter referred to as Design II). Finite element analyses of the Designs I and II models were carried out. Displacement and von Mises stress values for both models under the same loading and boundary conditions were obtained. Maximum displacement values were 8.51 mm and 9.05 mm for Design I and Design II, respectively. Maximum stress values were 15.19 MPa and 6.70 MPa for Design I and Design II, respectively. For the similar range of motion of ankle joint, the novel design produced less stress and more homogeneous stress distribution than the currently used design, thus indicating that Design II would be more resistant to plastic deformation than Design I.

dorsal trimline; ankle-foot orthosis; finite element analysis; computer-aided design; 3D optical scanning