Foot bone kinematics at half and three quarters body weight: A robotic cadaveric simulation of stance phase

Aubin, Patrick M.; Whittaker, Eric C.; Ledoux, William R.

doi:10.1109/icar.2011.6088575

Cited by 3 publications

(3 citation statements)

References 19 publications

(25 reference statements)

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“…This will influence the measured outcome parameters during the simulations. However, reports in literature 54 have demonstrated that such scaling has negligible influence on the resulting bone kinematics. Third, cadaveric studies usually involve small number of subjects, hindering strong conclusions given the lack of extensive statistical testing.…”

Section: Discussionmentioning

confidence: 97%

“…The relative position of the bones was documented in a static position of the foot under varying loads of 0, 222, 445 and 667 N compression of the tibia against the sole of the foot. Many groups documented foot bone kinematics during dynamic simulations of gait, starting with Hamel et al 51 (documenting tibia, talus, calcaneus) followed by Nester et al 52,53 (documenting tibia, talus, calcaneus, navicular, cuneiforms, cuboid, metatarsals 1, 2, 3, 4 and 5); Whittaker et al, 26 Aubin et al 54 (documenting tibia, talus, calcaneus, navicular, medial cuneiform, cuboid, metatarsals 1, 3 and 5); Peeters et al, 24 Burg et al, 55 Okita et al 56 (documenting tibia, talus, calcaneus, navicular, cuboid).…”

Section: Research Questions Addressed Through In Vitro Experimentationmentioning

confidence: 99%

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Foot–ankle simulators: A tool to advance biomechanical understanding of a complex anatomical structure

Natsakis

Burg

Dereymaeker

et al. 2016

Proc Inst Mech Eng H

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In vitro gait simulations have been available to researchers for more than two decades and have become an invaluable tool for understanding fundamental foot-ankle biomechanics. This has been realised through several incremental technological and methodological developments, such as the actuation of muscle tendons, the increase in controlled degrees of freedom and the use of advanced control schemes. Furthermore, in vitro experimentation enabled performing highly repeatable and controllable simulations of gait during simultaneous measurement of several biomechanical signals (e.g. bone kinematics, intra-articular pressure distribution, bone strain). Such signals cannot always be captured in detail using in vivo techniques, and the importance of in vitro experimentation is therefore highlighted. The information provided by in vitro gait simulations enabled researchers to answer numerous clinical questions related to pathology, injury and surgery. In this article, first an overview of the developments in design and methodology of the various foot-ankle simulators is presented. Furthermore, an overview of the conducted studies is outlined and an example of a study aiming at understanding the differences in kinematics of the hindfoot, ankle and subtalar joints after total ankle arthroplasty is presented. Finally, the limitations and future perspectives of in vitro experimentation and in particular of foot-ankle gait simulators are discussed. It is expected that the biofidelic nature of the controllers will be improved in order to make them more subject-specific and to link foot motion to the simulated behaviour of the entire missing body, providing additional information for understanding the complex anatomical structure of the foot.

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Section: Discussionmentioning

confidence: 97%

Section: Research Questions Addressed Through In Vitro Experimentationmentioning

confidence: 99%

Foot–ankle simulators: A tool to advance biomechanical understanding of a complex anatomical structure

Natsakis

Burg

Dereymaeker

et al. 2016

Proc Inst Mech Eng H

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“…Finally, reduced forces (50% body weight) were applied on the tendons during the measurements, which is an inherent limitation of in vitro simulations. Some researchers performing in vitro simulations use reduced muscle forces to ensure cadaveric integrity [22,25], with a typical reduction of the muscle forces by 50%, with reported limited effect on bone kinematics [2].…”

Section: Discussionmentioning

confidence: 99%

Extrinsic Muscle Forces Affect Ankle Loading Before and After Total Ankle Arthroplasty

Natsakis

Burg

Dereymaeker

et al. 2015

Clinical Orthopaedics &Amp; Related Research

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Background Joint loading conditions have an effect on the development and management of ankle osteoarthritis and on aseptic loosening after total ankle arthroplasty (TAA). Apart from body weight, compressive forces induced by muscle action may affect joint loading. However, few studies have evaluated the influence of individual muscles on the intraarticular pressure distribution in the ankle.Question/purposes The purpose of this study was to measure intraarticular pressure distribution and, in particular, (1) to quantify the effect of individual muscle action on peak-pressure magnitude; and (2) to identify the location of the center of pressure in the weightbearing native ankles and ankles that had TAA. Methods Peak pressure and intraarticular center of pressure were quantified during force alterations of four muscle groups (peronei, tibialis anterior, tibialis posterior, and triceps surae) in 10 cadaveric feet. The pressure was measured with a pressure sensitive array before and after implantation of a three-component mobile-bearing TAA prosthesis. Linear mixed-effects models were calculated and the y-intercept (b 0 ) and the slope (b 1 ) of the regression were used to quantify the size of the effect. Results Mean maximum peak pressures of 2 MPa (± 2.6 MPa) and 6.2 MPa (± 3.6 MPa) were measured for the native and TAA joint respectively. The triceps surae greatly affect the magnitude of peak pressure in the native ankle (slope b 1 = 0.174; p = 0.001) and TAA joint (slope b 1 = 0.416; p = 0.001). Furthermore, the force of most muscles caused a posterior and lateral shift of the center of pressure in both conditions. Conclusions Our results suggest that muscle force production has the potential to alter the pressure distribution in the native ankles and those with and TAA. Clinical Relevance Our study results help us to understand the effect of muscle forces on joint loading conditions which could be used in muscle training strategies and the design of better prosthetic components. Physical therapy or guided exercises may provide the potential to relieve areas in the joint that show signs of early osteoarthritis or reduce the contact stress on prosthetic components, potentially reducing the risk of TAA failure attributable to wear.

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Preclinical biomechanical testing models for the tibiotalar joint and its replacements: A systematic review

Ebramzadeh

Sangiorgio

2020

Foot and Ankle Surgery

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Foot bone kinematics at half and three quarters body weight: A robotic cadaveric simulation of stance phase

Cited by 3 publications

References 19 publications

Foot–ankle simulators: A tool to advance biomechanical understanding of a complex anatomical structure

Foot–ankle simulators: A tool to advance biomechanical understanding of a complex anatomical structure

Extrinsic Muscle Forces Affect Ankle Loading Before and After Total Ankle Arthroplasty

Preclinical biomechanical testing models for the tibiotalar joint and its replacements: A systematic review

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