Heterogeneous Loading of the Human Achilles Tendon In Vivo

The free Achilles tendon is considered a homogeneous structure that transmits muscular force in a linear manner. However, the tendon undergoes longitudinal rotation and is separated in mechanically independent segments with distinct mechanical and material tissue properties. The present article examines the hypothesis that the human Achilles tendon is loaded asymmetrically and undergoes heterogeneous deformation during movement.

[1]  V R Edgerton,et al.  Specific tension of human plantar flexors and dorsiflexors. , 1996, Journal of applied physiology.

[2]  R. M. Alexander.  Energy-saving mechanisms in walking and running. , 1991, The Journal of experimental biology.

[3]  G. Brüggemann,et al.  Influence of calcaneus angle and muscle forces on strain distribution in the human Achilles tendon. , 2012, Clinical biomechanics.

[4]  M. Miyashita,et al.  In vivo achilles tendon loading' during jumping in humans , 2004, European Journal of Applied Physiology and Occupational Physiology.

[5]  C. Maganaris,et al.  Human tendon behaviour and adaptation, in vivo , 2008, The Journal of physiology.

[6]  P. Krajewski,et al.  Fascicles of the adult human Achilles tendon - an anatomical study. , 2009, Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft.

[7]  H. Kurata,et al.  Electromyogram patterns during plantarflexions at various angular velocities and knee angles in human triceps surae muscles , 1996, European Journal of Applied Physiology and Occupational Physiology.

[8]  D. Thelen,et al.  Non-uniform displacements within the Achilles tendon observed during passive and eccentric loading. , 2014, Journal of biomechanics.

[9]  H. Langberg,et al.  Expression of collagen and related growth factors in rat tendon and skeletal muscle in response to specific contraction types , 2007, The Journal of physiology.

[10]  B. Anson,et al.  The structure of the calcaneal tendon (of Achilles) in relation to orthopedic surgery, with additional observations on the plantaris muscle. , 1946, Surgery, gynecology & obstetrics.

[11]  A Thorstensson,et al.  Differences in modulation of the gastrocnemius and soleus H-reflexes during hopping in man. , 1990, Acta Physiologica Scandinavica.

[12]  Adam P. Summers,et al.  Uniform strain in broad muscles: active and passive effects of the twisted tendon of the spotted ratfish Hydrolagus colliei , 2007, Journal of Experimental Biology.

[13]  R. F. Ker.  The design of soft collagenous load-bearing tissues. , 1999, The Journal of experimental biology.

[14]  T. Fukunaga,et al.  Longitudinal and transverse deformation of human Achilles tendon induced by isometric plantar flexion at different intensities. , 2011, Journal of applied physiology.

[15]  M. Kjaer,et al.  Heavy Slow Resistance Versus Eccentric Training as Treatment for Achilles Tendinopathy , 2015, The American journal of sports medicine.

[16]  Richard L. Lieber,et al.  Effects of Muscle Contraction on the Load-Strain Properties of Frog Aponeurosis and Tendon , 2000, Cells Tissues Organs.

[17]  V. Edgerton,et al.  Nonuniform strain of human soleus aponeurosis-tendon complex during submaximal voluntary contractions in vivo. , 2003, Journal of applied physiology.

[18]  T. Roberts,et al.  Biaxial strain and variable stiffness in aponeuroses , 2009, The Journal of physiology.

[19]  J Koebke,et al.  Asymmetrical Loading of the Human Triceps Surae: II. Differences in Calcaneal Moments , 1999, Foot & ankle international.

[20]  G. J. van Ingen Schenau,et al.  Role of Mono- and Biarticular Muscles in Explosive Movements , 1984, International journal of sports medicine.

[21]  Per Aagaard,et al.  Lower strength of the human posterior patellar tendon seems unrelated to mature collagen cross-linking and fibril morphology. , 2010, Journal of applied physiology.

[22]  M. Kubo,et al.  The twisted structure of the human Achilles tendon , 2015, Scandinavian journal of medicine & science in sports.

[23]  Alexander Rm,et al.  Energy-saving mechanisms in walking and running. , 1991 .

[24]  A. Arndt,et al.  Asymmetrical Loading of the Human Triceps Surae: I. Mediolateral Force Differences in the Achilles Tendon , 1999, Foot & ankle international.

[25]  M. Kjaer,et al.  Differential strain patterns of the human gastrocnemius aponeurosis and free tendon, in vivo. , 2003, Acta physiologica Scandinavica.

[26]  T. Fukunaga,et al.  Muscle activation and its distribution within human triceps surae muscles. , 2005, Journal of applied physiology.

[27]  M. Kjaer,et al.  Region-specific mechanical properties of the human patella tendon. , 2005, Journal of applied physiology.

[28]  D. Thelen,et al.  Non-uniform in vivo deformations of the human Achilles tendon during walking. , 2015, Gait & posture.

[29]  M. Kjaer,et al.  Differential displacement of the human soleus and medial gastrocnemius aponeuroses during isometric plantar flexor contractions in vivo. , 2004, Journal of applied physiology.

[30]  M. Kjaer,et al.  Lateral force transmission between human tendon fascicles. , 2008, Matrix biology : journal of the International Society for Matrix Biology.

[31]  J. Kaprio,et al.  Cumulative Incidence of Achilles Tendon Rupture and Tendinopathy in Male Former Elite Athletes , 2005, Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine.

[32]  Taija Finni,et al.  Differential contributions of ankle plantarflexors during submaximal isometric muscle action: a PET and EMG study. , 2014, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[33]  A. Thorstensson,et al.  Non-uniform displacement within the Achilles tendon during passive ankle joint motion , 2012, Knee Surgery, Sports Traumatology, Arthroscopy.

[34]  P. Komi,et al.  Biomechanical loading of Achilles tendon during normal locomotion. , 1992, Clinics in sports medicine.