10:00 - 10:10am


Isabel Sacco

Universidade de São Paulo; President of i-FAB 2021

10:10 - 10:50am
Room 1
Simultaneous translation available (EN-PT)


What’s happening in my Achilles tendon? The effects of running in different footwear

Keynote speaker: Toni Arndt​

The Swedish School of Sport and Health Sciences

Chair: Isabel Sacco

Universidade de São Paulo; President of i-FAB 2021

10:55 - 11:50am
Room 1
Simultaneous translation available (EN-PT)


Weight Bearing CT II

Chair: Rajshree Hillstrom

Biomed Consulting, Inc.

Chair: Sophie de Mits

Artevelde University of Applied Sciences

10:55 - 11:40pm
Room 2
Simultaneous translation available (EN-PT)


Diabetic foot I

Chair: Mary K. Hastings

Washington University School of Medicine

Chair: Anne Rasmussen

Steno Diabetes Center Copenhagen

11:50am - 12:20pm


12:20 - 12:25pm
Room 1


New Technologies Applied on Fila Running Performance Shoes

Speaker: Jonas de Araújo Rocha

12:25 - 12:30pm
Room 1


High precision for foot and ankle biomechanics

Speaker: Orlando Orlandi Melo de Carvalho

12:30 - 1:10pm
Room 1
Simultaneous translation available (EN-PT)


Biomechanics, physics, and evolution of foot arches

Keynote speaker: Madhusudhan Venkadesan

Yale University, Connecticut

Chair: William Ledoux

1:15 - 2:20pm
Room 1
Simultaneous translation available (EN-PT)


Foot Biomechanics

Chair: Julie Stebbins

Oxford University Hospitals

Chair: Deyse Borges Machado

Universidade Estadual de Santa Catarina

1:15 - 2:20pm
Room 2
Simultaneous translation available (EN-PT)


Tissue Biomechanics

Chair: Claire Brockett

University of Leeds

Chair: Heiliane de Brito Fontana

Universidade Federal de Santa Catarina

2:20 - 2:30pm


2:30 - 2:40pm
Room 1


Ebers System: gait analysis in the office

Speaker: M.D. Gabriela Blumtritt

2:40 - 4:30pm
Room 1
Simultaneous translation available (EN-PT)


Diabetic Foot Biomechanics

Chair: David G. Armstrong

Keck School of Medicine of University of Southern California

Chair: Sicco Bus

University of Amsterdam

4:35 - 5:20pm
Room 1
Simultaneous translation available (EN-PT)


Kinematics Methodological Aspects I

Chair: Karine Jacon Sarro

UNICAMP - Universidade Estadual de Campinas

Chair: Alessandra Bento Matias

Universidade de São Paulo

4:35 - 5:20pm
Room 2
Simultaneous translation available (EN-PT)



Chair: Andresa Germano

Chemnitz University of Technology

Chair: Liu Chiao Yi


Preliminary program – Subject to change

MCG Symposium

Symposium of the ISB Technical Group in Motor Control

Date: April 11, 2021 | Time: 10:00 am – 12:30 pm

The symposium on Motor Control in Biomechanics is a forum to foster the growing interest in scientific work that bridges the fields of Motor Control and Biomechanics. The symposium is organized by the ISB Technical Group in Motor Control (http://www.mcg.isbweb.org/) and brings together internationally renowned speakers to introduce their work on the understanding and application of motor control principles and approaches with a focus on foot and ankle biomechanics for a range of applications including Sports Medicine, Rehabilitation, Kinesiology, Modeling, and more.

Researchers and students with an interest in Biomechanics and Motor Control will have the opportunity to discover the latest developments at the intersection of these fields and discuss with experienced investigators.


Model-based comparative biomechanics and muscle function analysis of simulated crouch gait by healthy children and crouch gait in CP children

António Prieto Veloso

António Veloso is Full Professor at the University of Lisbon, since 2010. He is the Director of the PhD Program in Kinesiology at the Faculty of Human Kinetics from the University of Lisbon, also been responsible for the PhD in Biomechanics of this program since 2011 being also the director of the Biomechanics and Functional Morphology Laboratory of the University of Lisbon. He has served as Vice Dean at the Faculty of Human Kinetics of the University of Lisbon, between 2005 and 2009. Was also Head of Sports and Health Department at the same institution from 2012 until 2016.

António served as President for the Portuguese Society of Biomechanics between 2005-2009, as member of the Board of Directors for the International Society of Biomechanics in Sports for three terms between 2005-2011 and more recently served 6 years as member of the executive council of the International Society of Biomechanics where he was responsible for the programs for the ISB affiliated societies, the ISB technical groups and also the ISB EDC countries support programs.

António has published more than 200 papers in peer reviewed academic journal and in congress proceedings. His research interests include the biomechanics of human movement, where he focuses on the development of experimental methodologies, including the modelling and simulation of mechanical loads on the musculoskeletal system.

Motor control alterations in diabetic neuropathy: insights for rehabilitation strategies

Eneida Yuri Suda

Eneida Yuri Suda has a BSc (2000) in Physical Therapy with a MSc (2006) and PhD degrees (2017) in Sciences from the University of São Paulo, Brazil, with a one-year internship at Aalborg University, Denmark (2015-16). She is currently a full-time post-doctoral fellow at Laboratory of Biomechanics of Movement and Human Posture from University of São Paulo, Brazil. She has been working with research in Biomechanics since 2003, and her main research areas of interest are biomechanical analysis of the human movement and detection, processing and interpretation of surface EMG, motor control, foot-ankle biomechanics, biomechanics and rehabilitation of diabetic patients.

Motor control at the ankle joint: neuromuscular adaptations to training and injury

Marco Vaz

Dr. Marco Vaz is a Professor at the Federal University of Rio Grande do Sul, Brazil. He received his B.Sc. in Physical Education by the School of Physical Education, Physical Therapy and Dance of the same university in 1985, and his Ph.D. from the University of Calgary, Canada in 1996. He is presently a member of the World Council of Biomechanics, and has been a member of the International Society of Biomechanics Executive Council from 2009 to 2015. He has also been the President of the Brazilian Society of Biomechanics from 2011 to 2015. His current research focuses on developing a basic understanding of the Biomechanics of Human Movement, with special emphasis on neuromuscular plasticity due to increased- and decreased-use models, neuromuscular electrical stimulation and clinical models related to lower limb injuries.

Biomechanics and motor control of challenged gait in older adults

Eliane Celina Guadagnin

Dr. Eliane Celina Guadagnin completed her Ph.D. in Human Movement Sciences in 2018 from Federal University of Rio Grande do Sul (Brazil). Currently, she is a post-doctoral fellow at the Federal University of Pampa (Brazil). Her research are mainly focused on the effects of aging on gait under challenging conditions, on muscle structure, and on muscle function, and she is also interested in understanding how these parameters interact with each other and what is the influence of exercise on them.

The midfoot passive mechanical properties affect the lower limb biomechanics in weight-bearing activities

Fabrício Magalhães

Fabrício Magalhães earned a Bachelor degree in Physical Therapy from Pontifical Catholic University of Minas Gerais (PUCMG, Brazil), a Specialization in Physical Therapy with an emphasis in Sports and Therapeutic Exercises from PUCMG (Brazil), a Master degree in Sports Sciences (applied field: Sports Biomechanics) from Federal University of Minas Gerais (UFMG, Brazil), a Doctorate in Bioengineering (applied field: Biomechanics) from Università di Bologna (UNIBO, Italy), and Post-Doctoral residency in Rehabilitation Science (applied field: Motion Analysis) from UFMG (Brazil). He has experience in Biomechanics, Kinesiology, Orthopedics, Rehabilitation, Bioengineering and Sports, and currently, he is the human motion analysis laboratory’s manager at UFMG, author of dozens of articles and reviewer of some high-impacted scientific journals.

Isabel Sacco

Prof. Isabel C. N. Sacco has a Bachelor’s degree (1995), a MSc (1997) and a PhD (2001) in Physical Education by the University of Sao Paulo, São Paulo (Brazil). Her graduation and post-graduation majors focused on the diabetic neuropathy, and since then it is her main clinical and scientific expertise. Nowadays, she is an Associate Professor at the School of Medicine of the University of Sao Paulo (since 1999); 1B Research fellow of CNPq-Brazil (National Council for Scientific and Technological Development); and the head of the Laboratory of Biomechanics of Movement and Human Posture (LaBiMPH), whose main areas of research today include intelligent systems for decision making in health, Education in Health, Biomechanics and rehabilitation of diabetic and osteoarthritis patients. Prof. Sacco is currently on the editorial specialists’ board of the Brazilian Journal of Physical Therapy and serves as a reviewer of several Journals in the Biomechanics and Rehabilitation fields all over the world. Prof. Sacco coordinates and supervises research mainly related to biomechanics of human locomotion and rehabilitation of different neuromuscular pathologies, Pilates-exercise method, and casual and sport footwear. Acted as the Director of the Post Graduate Program in Rehabilitation Sciences at School of Medicine USP (2015-2019) and currently, is the vice-director. She had been honored by the Brazilian Government as one of the only 22 young (under forty years old) female Brazilian scientists in the national territory with a recognized merit, building up an academic carrier of national and international recognition with relevant scientific production and important role in the formation of human resources. Mother of Paola Sacco (17 yrs old).


What’s happening in my Achilles tendon? The effects of running in different footwear

Date: April 12, 2021 | Time: 10:10-10:50am (GMT-3)


Toni Arndt is a professor in biomechanics at the Swedish School of Sport and Health Sciences, where he is also Dean of research. Toni is President of the International Society of Biomechanics (ISB). He has a very international background with university studies in New Zealand, Australia, Germany and Sweden. Toni’s research career has predominantly been dedicated to Achilles tendon biomechanics, foot kinematics and lower leg function, both in terms of basic and applied science.

What’s happening in my Achilles tendon? The effects of running in different footwear.

In 2012 the ultrasound based method called speckle tracking was first used to describe non-homogenous deformation within the human Achilles tendon and since then a number of research groups internationally have consistently confirmed the results. There is a consensus that during dorsiflexion and plantarflexion motion the deeper portions of the tendon move more than the superficial portions. This has been shown in a variety of activities and different activation modalities of the triceps surae. Recent research now indicates that this non-uniform deformation may be a biomechanically beneficial behaviour indicative of a healthy tendon and that a reduction in non-homogeneity may be negative for tendon function and possibly an etiological mechanism for chronic tendon injury. Running barefoot or in minimalistic shoes has been associated with Achilles tendon injuries and this raises the question whether these conditions affect the internal dynamics of the tendon in a negative manner, i.e. by reducing non-homogenous behaviour. New data now support this hypothesis showing that the differences in displacement between deep and superficial portions of the tendon are decreased when running barefoot or in minimalistic shoes as compared to traditional running shoes. This could be expected to be a mechanism that places the Achilles tendon at risk for injury.

My presentation at iFAB 2020 will take us on the scientific journey from initial indications of non-homogeneity in the human Achilles tendon to the most recent studies exploring the effects that different footwear have on this during running. I will discuss the present state of knowledge concerning possible consequences of non-homogenous tendon deformation during running.


ORAL SESSION 3 - Weight Bearing CT II

10:55-11:02am3D biometric weightbearing CT assessment of hindfoot alignment in adult aquired flatfoot deformity
Cesar de Cesar Netto, Katrina E Bang, Nacime Salomao Mansur, Jonathan Garfinkel, Danilo Nishikawa, Francois Lintz, Alessio Bernasconi, Jonathan Deland, Scott Ellis
11:02-11:09amDistal Tibiofibular Syndesmotic Widening in Progressive Collapsing Foot Deformity
Elijah Auch, Cesar de Cesar Netto, Thiago Alexandre Alves, Daniel Baumfeld, Nacime Mansur, Samuel Ahrenholz, Shuyuan Li, Kevin Dibbern
11:09-11:16amFoot alignment in symptomatic National Football League (NFL) athletes: a weightbearing CT analysis
Cesar de Cesar Netto, Katrina E Bang, Alexandre Leme Godoy-Santos, Alessio Bernasconi, Francois Lintz, Pedro Augusto Pontin, Lauren Roberts, Martin O’Malley
11:16-11:23amMotion of all foot bones under controlled vertical load from series of weight-bearing CT scans
Michele Conconi, Alessandro Pompili, Claudio Belvedere, Stefano Durante, Nicola Sancisi, Alberto Leardini
11:23-11:30amThe efficacy of surgical treatment in the correction of adult acquired flatfoot deformity: a three-dimensional biometric weightbearing CT evaluation
Cesar de Cesar Netto, Jonathan Garfinkel, Katrina E Bang, Jonathan Day, Danilo Nishikawa, International WBCT Society, Scott Ellis, Martin O’Malley, Jonathan Deland

ORAL SESSION 4 - Diabetic foot I

10:55-11:02amDigital foot health technology and diabetic foot monitoring: A systematic review
Claire Saliba Thorne, Cynthia Formosa, Alfred Gatt, Clifford DeRaffaele, Abduarahman Bazena
11:02-11:09amGait analysis driven cluster analysis of diabetic patients: novel subgroups and their association with clinical outcomes in 15-years follow up
Annamaria Guiotto, Marco Soldan, Francesco Silvestri, Fabiola Spolaor, Gabriella Guarneri, Angelo Avogaro, Zimi Sawacha
11:09-11:16amImportance of measuring foot intrinsic and extrinsic muscle forces in diabetic subjects
Alfredo Ciniglio, Zimi Sawacha
11:16-11:23amThe efficacy of a diabetic educational program and predictors of compliance of patients with non-insulin dependent diabetes mellitus (type 2)
Kelly Cristina Stéfani, Aldo Barbachan, Leonardo Moraes, Evandro Portes, Roberto Sacilotto


Biomechanics, physics, and evolution of foot arches

Date: April 12, 2021 | Time: 12:30-1:10pm (GMT-3)


Madhusudhan Venkadesan is an Assistant Professor in the Department of Mechanical Engineering and Materials Science at Yale University. He completed his Bachelor of Technology at IIT Madras in India, and his Masters and Ph.D. at Cornell University in the US. He then joined Harvard University as a Postdoctoral Fellow in Applied Mathematics and Human Evolutionary Biology. He studies the mechanics and control of how animals move. Problems being pursued include locomotion in animals, the geometry of joints, the topology of shape-changing skins, and the dynamics of muscle. The motivation for and application of his work include biomedical sciences, evolutionary biology, robotics, and plain curiosity about everyday observations.

Biomechanics, physics, and evolution of foot arches

The stiffness of the foot is important to support the forces of walking and running. In this talk, I show how the arches of the human foot enable such stiffness. In particular, the transverse arch of the tarsals in the midfoot is a crucial part of the foot’s stiffness due to the principle of curvature-induced stiffness. Using mathematical models, physical mimics, and biological experiments we show how the transverse arch stiffens the foot. The principle is evident in a drooping currency note that significantly stiffens upon slightly curling it in the transverse direction.

ORAL SESSION 5 - Foot Biomechanics

1:15-1:22pmFine-wire electromyography of the transverse head of adductor hallucis during locomotion
Kelly Robb, Melady, Hope, Stephen, Perry
1:22-1:29pmOpen kinematic chain motion of the sesamoids in dorsiflexion
Mackenzie M. French, Eric D. Thorhauer, Tadashi Kimura, Bruce J. Sangeorzan, William R. Ledoux
1:29-1:36pmPlantar pressure sensors configurations to meet different applications
Alfredo Ciniglio, Annamaria Guiotto, Zimi Sawacha
1:36-1:43pmThe foot becomes less spring-like as speed increases
Lauren Williams, Dustin Bruening, Spencer Petersen
1:43-1:50pmThe impact of leg dominance on plantar pressure measurements: A STAPP study
Brian Booth, Jan Sijbers, Noel keijsers
1:50-1:57pmThe midfoot joint complex is functionally coordinated with the other lower limb joints for gait forward progression
Thales R Souza, Paula M Arantes, Leonardo D Barsante, Fabrício A Magalhães, Sérgio T Fonseca

ORAL SESSION 6 - Tissue Biomechanics

1:15-1:22pmAcceleration of the centre of mass of the body increases heel fat pad deformation and energy absorption
Lauren Welte, Toni Arndt, Michael J Rainbow
1:22-1:29pmExercise as a mechanical trigger followed by collagenase injections replicating intrinsic factors: an evolution of the animal model of chronic Achille’s tendinopathy
Cesar de Cesar Netto, Mario Lobao, Katrina E Bang, Kyle Duchman, John Femino, Jessica Goetz, Zijun Zhang, Lew Schon
1:29-1:36pmObesity, muscle quality and plantar fascia thickness in healthy adults
Juliana Yasmin Passos Karam, Jonathan Neto Müller, Heiliane de Brito Fontana
1:36-1:43pmReliability in ultrasound measurements of plantar aponeurosis thickness
Thiago de Souza da Silva
1:43-1:50pmThere is no difference between 2 and 5 minutes of static stretching on the mechanical properties of the Achilles tendon
Francesca Sonda, Anelize Cini, Emmanuel Souza da Rocha, Mariana de Oliveira Borges, Claudia Silveira Lima, Marco Aurélio Vaz

Special session

Diabetic Foot Biomechanics

Date: April 12, 2021 | Time: 2:40-4:30pm (GMT-3)

David G. Armstrong

Dr. Armstrong is Professor of Surgery at the University of Southern California. Dr. Armstrong holds a Masters of Science in Tissue Repair and Wound Healing from the University of Wales College of Medicine and a PhD from the University of Manchester College of Medicine, where he was appointed Visiting Professor of Medicine. He is founder and co-Director of the Southwestern Academic Limb Salvage Alliance (SALSA).

Dr. Armstrong has produced more than 510 peer-reviewed research papers in dozens of scholarly medical journals as well as over 90 books or book chapters. He is co-Editor of the American Diabetes Association’s (ADA) Clinical Care of the Diabetic Foot, now in its third edition.

Armstrong was appointed Deputy Director of Arizona’s Center for Accelerated Biomedical Innovation (ACABI) and co-founder of its “augmented human” initiative, which places him at the nexus of the merger of consumer electronics, wearables and medical devices.

Dr. Armstrong was selected as one of the first six International Wound Care Ambassadors and is the recipient of numerous awards and degrees by universities and international medical organizations including the inaugural Georgetown Distinguished Award for Diabetic Limb Salvage. In 2008, he was the 25th and youngest-ever member elected into the Podiatric Medicine Hall of Fame. He was the first surgeon to be appointed University Distinguished Outreach Professor at the University of Arizona. He was the first podiatric surgeon to become a member of the Society of Vascular Surgery and the first US podiatric surgeon named fellow of the Royal College of Surgeons, Glasgow. He is the 2010 and youngest ever recipient of the ADA’s Roger Pecoraro Award, the highest award given in the field.

Dr. Armstrong is past Chair of Scientific Sessions for the ADA’s Foot Care Council, and a past member of the National Board of Directors of the American Diabetes Association as well as a former commissioner with the Illinois State Diabetes Commission. He sits on the Infectious Disease Society of America’s (IDSA) Diabetic Foot Infection Advisory Committee and is the US appointed delegate to the International Working Group on the Diabetic Foot (IWGDF). Dr. Armstrong is the founder and co-chair of the International Diabetic Foot Conference (DF-Con), the largest annual international symposium on the diabetic foot in the world.

Special Session

Diabetic Foot Biomechanics

Date: April 12, 2021 | Time: 2:40-4:30pm (GMT-3)


Dr. Sicco Bus is a human movement scientist and associate professor, principle investigator, and head of the Human Performance Laboratory at Amsterdam UMC, Academic Medical Center, department of Rehabilitation in Amsterdam, the Netherlands. He completed his PhD in 2004 on the biomechanics of the diabetic foot. Sicco is program leader and member of the board of the Amsterdam Movement Sciences research institute. He chairs the study group of Neurovascular Complications of Diabetes in the Netherlands, and is member of the editorial board and chair of the Prevention and Offloading working groups of the International Working Group on the Diabetic Foot, which is tasked with the development of clinical practice guidelines.

SPECIAL SESSION 1 - Diabetic Foot Biomechanics

Foot ulcers are one of the main lower-extremity complications of diabetes mellitus. Diabetic neuropathy changes the structure of the foot, affecting its function and, consequently, resulting in increased plantar pressures. These pressures are a predictive risk factor for the development of diabetic foot ulcers. Therefore, it is important to implement strategies to protect the foot from abnormal biomechanical loading. This special session will address the biomechanical aspects of the diabetic foot complications, advances in biomechanical assessments and new approaches to the prevention and treatment of foot complications in patients with diabetes mellitus.

2:40-3:00pmSurgical offloading and biomechanical wearables
David G. Armstrong
3:05-3:12pmThe diabetic foot prevention: how model-based assessment of plantar tissues internal stresses can inform clinical practice
Annamaria Guiotto, Zimi Sawacha
3:12-3:19pmPeripheral Neuropathy, Claw Toes, Intrinsic Muscle Volume, and Plantar Aponeurosis Thickness in Diabetic Feet
Tadashi Kimura, Eric D. Thorhauer, Matthew W. Kindig, Bruce J. Sangeorzan, William R. Ledoux
3:19-3:26pmDifferences in mechanical skin properties as a compensatory mechanism of sensory impairment in Diabetes patients?
Tina J. Drechsel, Claudio Zippenfennig, Renan L. Monteiro, Isabel C. N. Sacco, Thomas L. Milani
3:26-3:33pmHeel rise task identifies midfoot function during walking in diabetes
Hyo-Jung Jeong, Michael J. Mueller, Jennifer A. Zellers, Yan Yan, Mary K. Hastings
3:33-3:40pmClinical relevance of the plantar anatomical masking for plantar loading analysis in Diabetic Foot
Erica Silva, Renan Monteiro, Danilo Santos, Jane Ferreira, Isabel Sacco, Claudia Giacomozzi
3:40-3:47pmBiomechanics of midfoot Charcot neuroarthropathy in people with diabetes
Nichola Renwick, Esther Smith, Jim Woodburn, Kenneth Meijer, Roslyn Miller, James Harper
3:47-4:05pmQ&A (all presentations)
4:05-4:20pmState of the art in footwear biomechanics in diabetic foot disease
Sicco Bus

ORAL SESSION 7 - Kinematics Methodological Aspects I

4:35-4:42pmAccuracy and reliability of skin-markers based measures of the medial longitudinal arch of the foot
Paolo Caravaggi, Alberto Leardini, Isabel Sacco, Ulisses Taddei, Alessandra Matias, Chiara Spasiano, Mariachiara Barbieri, Giulia Rogati, Maurizio Ortolani
4:42-4:49pmAnalysis of intra-examiner reproducibility in the analysis of 2D Ankle Kinematics
Felipe P Carpes, Jean S Carvalho, Victor L Costa, Carolina S Martins, Eliane C Guadagnin
4:49-4:56pmDevelopment and Validation of a Multi-Segment Foot Model using Biplanar Videoradiography
Jayishni Maharaj, Michael J Rainbow, Dominic Gehring, Glen A Lichtwark
4:56-5:03pmForefoot subdivision and kinematics for clinical gait analysis
Po-Hsiang Chan, Julie Stebbins, Amy B. Zavatsky


4:35-4:42pmCorrelation between stabilometry and history of sprains in professional volleyball athletes
Thania Loiola Cordeiro Abi Rached, Alexandre Collucci, Tales Triani, Rogerio Bitar
4:42-4:49pmForce-time curves and plantar pressure distribution in high level athletes of 400 metres hurdles in block phase
Paulo H. P. Rodrigues, Lyon Aragão, Elias Nicolas, Evandro Lázari, Ricardo M. L. Barros
4:49-4:56pmThe influence of foot alignment and ankle dorsiflexion range of motion on dynamic lower limb valgus during a classical ballet jump: a cross-sectional study
Anelise Moreti Cabral, Adalberto Felipe Martinez, Vitor Leme, Bruna Calazans Luz, Fábio Viadanna Serrão
4:56-5:03pmRelationship between Achilles tendon properties, metabolic cost and 3000 m running performance
Esthevan Machado, Edson S Silva, Fábio J Lanferdini, Jeam M Geremia, Leonardo A Peyré-Tartaruga