Functional Outcome of Ankle Arthroplasties Based on Videofluoroscopy
Description
Ankle osteoarthritis causes severe pain and functional limitations, reduces mobility and quality of life. Currently one possibility of surgical treatment for osteoarthritis are total ankle arthroplasties. Early designs of total ankle arthroplasties showed a high failure rate mainly due to loosening, but modern designs enable more promising mid- and longterm outcome results and in the last decades their use has gained more and more acceptance.
One important design criteria of total ankle arthroplasties is to achieve normal anatomical function and motion. This means to restore motion, but also to provide a motion pattern that allows surrounding soft tissues maintaining their physiological role of guiding and limiting motion. In a PhD thesis at the ETH Zurich it has been shown that videofluoroscopy is a powerful tool to assess the functionality of an ankle arthroplasty by allowing the in vivo quantification of the 3D kinematics of an ankle arthroplasty during daily motion tasks, such as level and slope walking.
Total ankle arthroplasty subjects often suffer pain on the anteromedial side of their ankle joint. Based on clinical experience this pain can’t be explained by the standard clinical assessments. The question therefore arises whether TAA subjects show a different kinematic behavior during gait, resulting in nonphysiological loading of the surrounding soft tissue and causing the subsequent pain.
Goal
By means of videofluoroscopy, ground reaction force measurements and subsequent modeling, the goals are followed to assess kinematic differences and limitations in the gait characteristics of total ankle arthroplasty subjects and how this affects the strains and stresses of the surrounding soft tissues.
Contact
Institut für Biomechanik
Gloriastrasse 37/ 39
8092
Zürich
Switzerland
Project Relevant Abstracts and Publications:
1. List, R., et al., A functional outcome study comparing total ankle arthroplasty (TAA) subjects with pain to subjects with absent level of pain by means of videofluoroscopy. Foot and Ankle Surgery, 2012. 18: p. 270-276.
2. List, R., et al., Three-dimensional kinematics of an unconstrained ankle arthroplasty: a preliminary in vivo videofluoroscopic feasibility study. Foot Ankle Int, 2012. 33(10): p. 883-92.
3. List, R., et al. How well can skin marker analysis detect the kinematics of a total ankle arthroplasty? - A comparison to videofluoroscopy. in Journal of Foot and Ankle Research. 2012.
4. List, R. Kinematics of ankle arthroplasties based on videofluoroscopy. in 9th EFAS International Congress. 2012. Nordwijk An Zee, The Netherlands.
5. List, R., et al. Wieviel/Welche Beweglichkeit braucht die Sprunggelenksarthroplastik – Eine Videofluoroskopische Analyse. in 7. Jahrestagung der Deutschen Gesellschaft für Biomechanik (DGfB). 2011. Murnau, Germany.
6. List, R., et al. A Functional Outcome Study of Pain vs. No Pain Total Ankle Arthroplasty Subjects Based on Videofluoroscopy. in XXIII Congress of the International Society of Biomechanics (ISB). 2011. Brussels, Belgium.
7. List, R. Kinematics of ankle arthroplasties based on videofluoroscopy. in International Symposium on Foot and Ankle. 2011. Limelette, Belgium.
8. List, R., et al. 3D Kinematik von Sprunggelenksarthroplastiken basierend auf Videofluoroskopie. in 7. Biomechanik Symposium Tübingen. 2010. Tübingen, Deutschland.
9. List, R. In Vivo Assessment of the 3D Kinematics of Ankle Arthroplasties Using Videofluoroscopy. in 8th Research Day of Translational Orthopedics. 2010. EPFL Lausanne, Switzerland.
10. List, R., et al. 3D kinematics of ankle arthroplasties using videofluoroscopy. in XXII Congress of the International Society of Biomechanics. 2009. Cape Town, South Africa.
11. Stacoff, A., R. List, and P. Wolf. Biomechanics of the foot and ankle: an external and internal view. in International Congress of the Polish Society of Biomechanics. 2008. Wroclaw, Polen.
12. List, R., et al. An in vivo procedure to quantify 3D kinematics of ankle arthroplasties using videofluoroscopy. in Journal of biomechanics. 2008.