Limits...
Design and evaluation of a new type of knee orthosis to align the mediolateral angle of the knee joint with osteoarthritis.

Esrafilian A, Karimi MT, Eshraghi A - Adv Orthop (2012)

Bottom Line: The results of the research showed that the adduction moment applied on the knee joint decreased while subjects walked with the new knee orthosis (P-value < 0.05).Conclusion.The new design of the knee brace can be used as an effective treatment to decrease the loads applied on the knee joint and to improve the alignment whilst walking.

View Article: PubMed Central - PubMed

Affiliation: Mechanical Engineering Department, Isfahan University of Technology, Isfahan, Iran.

ABSTRACT
Background. Osteoarthritis (OA) is a disease which influences the performance of the knee joint. Moreover, the force and moments applied on the joint increase in contrast to normal subjects. Various types of knee orthoses have been designed to solve the mentioned problems. However, there are other problems in terms of distal migration during walking and the alignment of the orthosis which cannot be changed following the use of brace. Therefore, the main aim of the research was to design an orthosis to solve the aforementioned problems. Method. A new type of knee orthosis was designed with a modular structure. Two patients with knee OA participated in this research project. The force applied on the foot, moment transmitted through the knee joint, and spatiotemporal gait parameters were measured by use of a motion analysis system. Results. The results of the research showed that the adduction moment applied on the knee joint decreased while subjects walked with the new knee orthosis (P-value < 0.05). Conclusion. The new design of the knee brace can be used as an effective treatment to decrease the loads applied on the knee joint and to improve the alignment whilst walking.

No MeSH data available.


Related in: MedlinePlus

Abduction/adduction angle of the knee joint while walking with and without orthosis (subject 1).
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3345217&req=5

fig2: Abduction/adduction angle of the knee joint while walking with and without orthosis (subject 1).

Mentions: There was no significant difference between the vertical force applied on the leg in the first subject while walking with and without the orthosis (573 ± 36 compared to  560.9 ± 29 N). In contrast in the subject 2, the vertical force transmitted through the leg with and without the brace was  688 ± 17  and  642 ± 12  N, respectively (P-value = 0.001). Moreover, the mediolateral force decreased while walking with the orthosis compared to without orthosis (P-value < 0.05). Figures 2, 3, 4, and 5 show the moment applied on the knee, vertical and mediolateral forces applied on the limb, and adduction of the knee joint during walking with and without the orthosis.


Design and evaluation of a new type of knee orthosis to align the mediolateral angle of the knee joint with osteoarthritis.

Esrafilian A, Karimi MT, Eshraghi A - Adv Orthop (2012)

Abduction/adduction angle of the knee joint while walking with and without orthosis (subject 1).
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3345217&req=5

fig2: Abduction/adduction angle of the knee joint while walking with and without orthosis (subject 1).
Mentions: There was no significant difference between the vertical force applied on the leg in the first subject while walking with and without the orthosis (573 ± 36 compared to  560.9 ± 29 N). In contrast in the subject 2, the vertical force transmitted through the leg with and without the brace was  688 ± 17  and  642 ± 12  N, respectively (P-value = 0.001). Moreover, the mediolateral force decreased while walking with the orthosis compared to without orthosis (P-value < 0.05). Figures 2, 3, 4, and 5 show the moment applied on the knee, vertical and mediolateral forces applied on the limb, and adduction of the knee joint during walking with and without the orthosis.

Bottom Line: The results of the research showed that the adduction moment applied on the knee joint decreased while subjects walked with the new knee orthosis (P-value < 0.05).Conclusion.The new design of the knee brace can be used as an effective treatment to decrease the loads applied on the knee joint and to improve the alignment whilst walking.

View Article: PubMed Central - PubMed

Affiliation: Mechanical Engineering Department, Isfahan University of Technology, Isfahan, Iran.

ABSTRACT
Background. Osteoarthritis (OA) is a disease which influences the performance of the knee joint. Moreover, the force and moments applied on the joint increase in contrast to normal subjects. Various types of knee orthoses have been designed to solve the mentioned problems. However, there are other problems in terms of distal migration during walking and the alignment of the orthosis which cannot be changed following the use of brace. Therefore, the main aim of the research was to design an orthosis to solve the aforementioned problems. Method. A new type of knee orthosis was designed with a modular structure. Two patients with knee OA participated in this research project. The force applied on the foot, moment transmitted through the knee joint, and spatiotemporal gait parameters were measured by use of a motion analysis system. Results. The results of the research showed that the adduction moment applied on the knee joint decreased while subjects walked with the new knee orthosis (P-value < 0.05). Conclusion. The new design of the knee brace can be used as an effective treatment to decrease the loads applied on the knee joint and to improve the alignment whilst walking.

No MeSH data available.


Related in: MedlinePlus