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Påverkar skon styvheten i ankel-fotortoser?: En funktionell analys
Jönköping University, School of Health and Welfare, HHJ, Dep. of Rehabilitation.
Jönköping University, School of Health and Welfare, HHJ, Dep. of Rehabilitation.
2018 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesisAlternative title
Does the shoe affect the stiffness of an ankle-foot orthosis?  : A functional-analysis. (English)
Abstract [sv]

Bakgrund: Varierande styvhet mot dorsal-/plantarflektion i en ankel-fotortos (AFO)kan påverka kinematik och kinetik kring ankel och knä hos personer med cerebral pares eller post-stroke. Kunskap om huruvida skon påverkar styvheten i ett AFO-sko-benkomplex är begränsad. En tidigare studie har undersökt ämnet men använde bänktester för att adressera frågan. Syfte: Syftet var att, med funktionell analys, undersöka huruvida skor påverkar styvheten i ett AFO-sko-benkomplex, i sagittalplanet. Studiedesign: Överkorsningsstudie. Metod: Gånganalys genomfördes på fem friska individer. Deltagarna fick gå med tre olika AFO-skokombinationer. Data om ankelvinklar och ankelmoment extraherades för att beräkna styvheten för respektive AFO-skokombination. Styvheten för de olika kombinationerna jämfördes under fyra intervall. Resultat: Det fanns en skillnad i styvhet med olika skor. Styvheterna varierade mellan 0,0314–0,1652 Nm/° under de olika intervallen. Vilken AFO-skokombination som hade störst styvhet varierade beroende på vart i gångfasen de befann sig. Största skillnaden som uppmättes mellan två skor var 49,6%. Konklusion: Styvheten hos ett ben-AFO-sko-komplex kan variera beroende på vilken sko som används hos friska individer. Endast mindre skillnader kunde o mellan de olika AFO-skoalternativen varvid den kliniska relevansen av resultatet kan ifrågasättas.

Abstract [en]

Background: Variation in stiffness against dorsal- and/or plantarflexion in an ankle-foot orthosis (AFO) can affect the kinematics and kinetics of the knee and ankle in people with cerebral pares and post-stroke. The knowledge of whether the shoe influence the overall stiffness in a limb-AFO-shoe-complex is limited. A previous study has investigated the subject but used a bench-analysis to address the question.

Objective: The objective of the study was to use functional-analysis to investigate the influence of shoe-choice on the overall stiffness in a limb-AFO-shoe-complex in the sagittal-plane.

Study Design: Crossover study.

Methods: Gait analysis was performed on five healthy participants who wore three different AFO-shoecombinations. Data about the ankleangle and anklemoment was extracted to calculate the stiffness of each AFO-shoecombination. The stiffness’ were compared in four different intervals.

Results: There was a difference in stiffness between the AFO-shoecombinations. The stiffness’ varied between 0,0314–0,1652 Nm/° during the different intervals. Which AFO-shoecombination that had the highest stiffness also varied during the extracted phase. The biggest difference in stiffness between two shoes was 49,6%.

Conclusions: Stiffness in a limb-AFO-shoe-complex may depend on the shoechoice in healthy individuals. Only small differences were observed between the different AFO-shoecombinations, thus the results’ clinical relevance can be questioned.

Place, publisher, year, edition, pages
2018.
National Category
Orthopaedics Other Health Sciences
Identifiers
URN: urn:nbn:se:hj:diva-40457ISRN: JU-HHJ-OTE-1-20180026OAI: oai:DiVA.org:hj-40457DiVA, id: diva2:1219664
Subject / course
HHJ, Prosthetic and Orthotic
Supervisors
Examiners
Available from: 2018-06-20 Created: 2018-06-17 Last updated: 2018-06-20Bibliographically approved

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