Recent Developments In Above-Knee Prosthetics and The Importance of Energy Recovery In Transfemoral Amputee Gait

Hande Argunsah Bayram

EN TR

Recent Developments In Above-Knee Prosthetics and The Importance of Energy Recovery In Transfemoral Amputee Gait

Abstract

Objectives: Use of a spring as an energy harvest/release mechanism for transfemoral prosthetics designs is gaining traction. While springs theoretically can minimize the energy flow deficiency during the stance phase knee flexion, there are problems associated with controlling the release of energy harvested by springs. The purpose of this review is to discuss the importance of controlled energy flow at the knee joint, recent attempts to harvest/return energy and the emphasis on the role of the ankle prosthesis in achieving assisted gait. Study Design: Literature Review Methods: Use of a spring in emerging prosthetic knee designs are presented in terms of their energy regeneration abilities along with their advantages and limitations. Results: Use of a spring in knee prosthetics can cut power demand significantly as they mimick the musculotendonous structures by harvesting and returning needed energy. Conclusions: Controlled energy flow at the knee joint could not only provide natural movement of the amputated limb but could also create positive power peaks at the knee joint. These features cannot be produced by any of the current generation of controlled damping prosthetic knees.

Keywords

prostheses and Implants,knee,energy flow,spring

DİzÜstÜ protez cİhazlardakİ son geliŞmeler ve dİzÜstÜ ampute hareketİnde enerjİ gerİ dÖnÜŞÜmÜnÜn Önemİ

Öz

Amaç: Diz üstü protezlerde enerji depolama ve geri dönüşümünde yay kullanımı sıkça kullanılan bir metod haline gelmiştir. Teorik olarak yaylar hareketin ağırlığı kabul etme döneminde gerçekleşen dizdeki bükülme süresinde enerji akışındaki kaybı azaltırken, sıkıştırılan yayın salınmasının kontrolünde bazı problemler mevcuttur. Bu derlemenin amacı diz eklemindeki kontrollu enerji akışının önemini vurgulamak, son dönemde bu amaca ulaşmak için tasarlanan protezlerden bahsetmek ve bilek eklemi protezlerinin kontrollu ampute yürüyüşünü sağlamadaki önem ve katkılarından bahsetmektir. Çalışma Planı: Derleme Yöntemler: Hareket sırasında enerji geri dönüşümünü sağlamak amacıyla üretilen son teknoloji protez cihazlardan bahsedilmiş ve onların avantajları/ eksiklikleri belirtilmiştir. Bulgular: Yaylar kas ve tendon yapılarını taklit ederek hareket sırasında gerekli olan enerjiyi depolama ve geri gönderme sağlarlar, bu da güç gereksiniminin ciddi bir şekilde azalmasını sağlar. Sonuç: Diz ekleminde kontrollu enerji akışı, ampute edilmiş bacakla normal harekete ulaşılmasını sağlamakla kalmaz, aynı zamanda dizde pozitif güç periyotlarının oluşmasını da sağlar. Bu kazanımlar, günümüzde var olan ticari protez bacakların hiçbirinde bulunmamaktadır

Anahtar Kelimeler

protez ve implantlar,diz,enerji akısı,yay

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Details

Primary Language

English

Subjects

-

Journal Section

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Authors

Hande Argunsah Bayram

Publication Date

June 1, 2015

Submission Date

-

Acceptance Date

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Published in Issue

Year 2015 Number: 2

IZ

https://izlik.org/JA98FB42HE

Cite

RIS / Bibtex

EndNote

Bayram HA (June 1, 2015) Recent Developments In Above-Knee Prosthetics and The Importance of Energy Recovery In Transfemoral Amputee Gait. Acıbadem Üniversitesi Sağlık Bilimleri Dergisi 2 61–68.