Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-6220
Wolf, P; Stacoff, A; Luechinger, R; Boesiger, P; Stuessi, E (2008). Transmissions within the tarsal gearbox. Journal of the American Podiatric Medical Association, 98(1):45-50.
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BACKGROUND: The dependence of the movements of the calcaneus, cuboid, navicular, and talus on each other have been described as the tarsal gearbox. To provide a basis of its modeling, data on transmissions between tarsal joint rotations within this gearbox are required. The feasibility of tibiocalcaneal rotations to predict tarsal joint rotations is of interest because a meaningful relation would allow the use of common motion analysis with skin markers to investigate rearfoot kinematics. METHODS: We performed linear regression analyses between tarsal joint and tibiocalcaneal rotations on the basis of magnetic resonance imaging of tibia and tarsal bone positions during quasi-static foot pronation and supination. RESULTS: In the frontal plane and transverse planes, linear models were found to predict tarsal joint rotations quite well (r(2) = 0.83-0.97 for the frontal plane and r(2) = 0.73-0.95 for the transverse plane). For each degree of talocalcaneal rotation, there was 1.8 degrees of talonavicular rotation in the frontal plane and 1.6 degrees in the transverse plane; each degree of talocalcaneal rotation resulted in 0.6 degrees of calcanealcuboid rotation in the frontal plane and 0.7 degrees in the transverse plane; each degree of calcaneocuboid rotation resulted in 3 degrees of talonavicular rotation in the frontal plane and 2.8 degrees in the transverse; each degree of tibiocalcaneal rotation resulted in 0.9 degrees of talocalcaneal rotation in the frontal plane and 0.9 degrees in the transverse plane; and each degree of tibiocalcaneal rotation resulted in 1.6 degrees of talonavicular rotation in the frontal plane and 1.3 degrees in the transverse plane. CONCLUSION: The present study provides a basis on which the tarsal gearbox in the frontal and the transverse planes under quasi-static conditions can be modeled. Furthermore, it is concluded that tibiocalcaneal rotations are practical for predicting tarsal joint rotations during quasi-static motions.
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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||04 Faculty of Medicine > Institute of Biomedical Engineering
04 Faculty of Medicine > Balgrist University Hospital, Swiss Spinal Cord Injury Center
|Dewey Decimal Classification:||170 Ethics
610 Medicine & health
|Deposited On:||11 Dec 2008 10:08|
|Last Modified:||27 Nov 2013 18:55|
|Publisher:||American Podiatric Association|
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