Dynamics and Energetics of Impacts in Crutch Walking

Carpentier, Clément; Font-Llagune, Josep M.; Kövecses, József
November 2010
Journal of Applied Biomechanics;Nov2010, Vol. 26 Issue 4, p473
Academic Journal
The impulsive dynamics associated with the impact of the crutch with the ground is an important topic of research, since this is known to be the main cause of energy loss during crutch gait. In this article, a four-segmental 2D model based on anthropometric body segment parameters is used to analyze various dynamics aspects of such impact. For this purpose, a novel formulation based on the decomposition of the tangent space of the biomechanical system to two subspaces associated with the constrained and admissible motions is developed. Detailed numerical analysis is presented to discuss the effects of body configuration and crutch length on the kinetic energy redistribution, velocity change and impulsive contact forces generated. The conclusions reached via this analysis give guidelines for optimal crutch selection or crutch-use teaching that can be applied to injured subjects. For instance, to reduce energy consumption which leads to a reduction of muscular fatigue.


Related Articles

  • Gait analysis methods in rehabilitation. Baker, Richard // Journal of NeuroEngineering & Rehabilitation (JNER);2006, Vol. 3, p4 

    Introduction: Brand's four reasons for clinical tests and his analysis of the characteristics of valid biomechanical tests for use in orthopaedics are taken as a basis for determining what methodologies are required for gait analysis in a clinical rehabilitation context. Measurement methods in...

  • Temporal Values and Plantar Pressures During Normal Walking and Racewalking in a Group of Racewalkers. Villarroya, M. Adoración; Casajús, José Antonio; Pérez, José María // Journal of Sport Rehabilitation;May2009, Vol. 18 Issue 2, p283 

    Objectives: To compare temporal and pressure values between racewalking and normal walking (freely selected speed) and evaluate the impact of racewalking on normal walking. Design and Participants: Temporal and plantar-pressure values were recorded (xPression system) during normal walking and...

  • A Kinematic Comparison of Spring-Loaded and Traditional Crutches. Seeley, Matthew K.; Hunter, Iain; Bateman, Thomas; Roggia, Adam; Larson, Brad J.; Draper, David O. // Journal of Sport Rehabilitation;May2011, Vol. 20 Issue 2, p198 

    Context: A novel spring-loaded-crutch design may provide patients additional forward velocity, relative to traditional axillary crutches; however, this idea has not yet been evaluated. Objective: To quantify elastic potential energy stored by spring-loaded crutches during crutch-ground contact...

  • Professional Pulse: RESEARCH ROUNDUP. Size, Not Developmental Factors, May Dictate Toddlers' Running Gait.  // PT in Motion;Dec2015/Jan2016, Vol. 7 Issue 11, p52 

    The article explains the role of size in determining muscle activation for toddlers while running, based on a published study in the "Journal of Experimental Biology."

  • Unstable structure impact on external knee adduction moment. Jiang Ci; Gao Xiaoxia; Ren Feng; Gu Yaodong; Li Jianshe // Journal of Chemical & Pharmaceutical Research;2014, Vol. 6 Issue 3, p1249 

    Osteoarthritis (OA) of the knee is one of the most common diseases. For this chronic disease, modified sole structure can effectively prevent and relieve disease of the knee. The aim of this study is to explore the influence of unstable shoe with different stiffness on ground reaction force and...

  • BIOMECHANICS OF UPHILL WALKING IN MODERATELY OBESE ADULTS. Reynolds, Michelle; Ehlen, Kellie; Dannecker, Kathryn; Carter, Cameron; Browning, Raymond // Conference Proceedings of the Annual Meeting of the American Soc;2010, p25 

    The article discusses a study of the biomechanics of uphill versus level walking (LW) in moderately obese adults (OA). The researchers determined how obesity impacted temporal gait characteristics, mid-stance joint angles and maximum net muscle moments (NMM) in 12 OA participants. They found...

  • THE EFFECT OF HEEL HEIGHT ON PEAK TIBIAL AND HEAD ACCELERATIONS AND SHOCK ATTENUATION DURING WALKING. Barkema, Danielle D.; Derrick, Timothy R.; Martin, Philip E. // Conference Proceedings of the Annual Meeting of the American Soc;2010, p631 

    The article discusses the findings of a study which examined how heel height can affect peak tibial acceleration (PTA), peak head axial acceleration (PHA), and shock attenuation (SA) of the body while walking. The experiment involved the use of uniaxial accelerometers to measure walking...

  • Mechanical energy fluctuations during walking of healthy and ACL-reconstructed subjects. WINIARSKI, SŁAWOMIR // Acta of Bioengineering & Biomechanics;2008, Vol. 10 Issue 2, p57 

    In a clinical gait analysis, mechanical energy is the gait variable which can validate the energetic state of the disorder of patient's movement. The purpose of this study was to explore the possibilities of employing the total mechanical energy in estimating the mechanical cost of transport in...

  • NEURONAL NOISE INFLUENCES GAIT VARIABILITY AND FALL RISK IN A DYNAMIC WALKING MODEL. Roos, Paulien E.; Dingwell, Jonathan B. // Conference Proceedings of the Annual Meeting of the American Soc;2010, p53 

    The article discusses a study of the effect of increased neuronal noise (NN) on gait variability (GV) and probability of falling in a dynamic walking model. The researchers used an intrinsically laterally unstable three-dimensional model which included a lateral step controller to maintain...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics