3D dynamic behaviour of foot structure may provide additional information for last design

Schmeltzpfenning, Timo; Plank, Clemens; Fritz, Bettina; Aswendt, Petra; Grau, Stefan

doi:10.1080/19424280.2011.575866

Cited by 8 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Schmeltzpfenning et al considered a structured light approach to reconstruct the plantar surface of the foot [ 18 ], and the whole surface of the foot [ 19 ]. The presented system uses 3 camera-projector pairs, which work in an interleaved manner.…”

Section: Introductionmentioning

confidence: 99%

Dynamic 3D shape of the plantar surface of the foot using coded structured light: a technical report

Thabet

Trucco

Salví

et al. 2014

Journal of Foot and Ankle Research

View full text Add to dashboard Cite

BackgroundThe foot provides a crucial contribution to the balance and stability of the musculoskeletal system, and accurate foot measurements are important in applications such as designing custom insoles/footwear. With better understanding of the dynamic behavior of the foot, dynamic foot reconstruction techniques are surfacing as useful ways to properly measure the shape of the foot. This paper presents a novel design and implementation of a structured-light prototype system providing dense three dimensional (3D) measurements of the foot in motion. The input to the system is a video sequence of a foot during a single step; the output is a 3D reconstruction of the plantar surface of the foot for each frame of the input.MethodsEngineering and clinical tests were carried out to test the accuracy and repeatability of the system. Accuracy experiments involved imaging a planar surface from different orientations and elevations and measuring the fitting errors of the data to a plane. Repeatability experiments were done using reconstructions from 27 different subjects, where for each one both right and left feet were reconstructed in static and dynamic conditions over two different days.ResultsThe static accuracy of the system was found to be 0.3 mm with planar test objects. In tests with real feet, the system proved repeatable, with reconstruction differences between trials one week apart averaging 2.4 mm (static case) and 2.8 mm (dynamic case).ConclusionThe results obtained in the experiments show positive accuracy and repeatability results when compared to current literature. The design also shows to be superior to the systems available in the literature in several factors. Further studies need to be done to quantify the reliability of the system in clinical environments.

show abstract

Section: Introductionmentioning

confidence: 99%

Dynamic 3D shape of the plantar surface of the foot using coded structured light: a technical report

Thabet

Trucco

Salví

et al. 2014

Journal of Foot and Ankle Research

View full text Add to dashboard Cite

show abstract

“…The maximum value of displacement was 6.361 mm and in the proposed method 6.5342 mm, which represents a relative error of 2-3 %. Although the difference of these measures is relatively large ( 2 × 10 −2 mm), the accuracy of the method can be considered sufficient for measure large deformations suffered by human skin under muscle contractions and body segment motions which reach values of 8-10 mm in the foot during human gait (Blenkinsopp et al, 2012;Schmeltzpfenning et al, 2011) and even 10-15 mm in other anatomical areas such as shoulder and knee (Mahmud et al, 2010). …”

Section: Test C: Related To Out-of-plane Displacementmentioning

confidence: 99%

“…This approach based on skin strain analysis was first proposed in the work of Iberall (1964) and was continued by Newman et al (2005) to improve the mobility of astronauts. Today, this methodology is used in a variety of applications, including the design of a prosthetic socket (Lin et al, 2016), orthoses (Domingues et al, 2011), exoskeletons for gait assistance (Wehner et al, 2013) and functional clothes (Seo et al, 2013), among others.…”

Section: Introductionmentioning

confidence: 99%

A new methodology to identify minimum strain anatomical lines based on 3-D digital image correlation

et al. 2017

View full text Add to dashboard Cite

Abstract.Today there is continuous development of wearable devices in various fields such as sportswear, orthotics and personal gadgets, among others. The design of these devices involves the human body as a support environment. Based on this premise, the development of wearable devices requires an improved understanding of the skin strain field of the body segment during human motion. This paper presents a methodology based on a three dimensional digital image correlation (3D-DIC) system to measure the skin strain field and to estimate anatomical lines with minimum deformation as design criteria for the aforementioned wearable devices. The errors of displacement and strain measurement related to 3-D reconstruction and out-of-plane motion are investigated and the results are acceptable in the case of large deformation. This approach can be an effective tool to improve the design of wearable devices in the clinical orthopaedics and ergonomics fields, where comfort plays a key role in supporting the rehabilitation process.

show abstract

Foot and footwear biomechanics and gait

Price

Schmeltzpfenning

Nester

et al. 2021

Handbook of Footwear Design and Manufacture

Self Cite

View full text Add to dashboard Cite

3D dynamic behaviour of foot structure may provide additional information for last design

Cited by 8 publications

References 4 publications

Dynamic 3D shape of the plantar surface of the foot using coded structured light: a technical report

Dynamic 3D shape of the plantar surface of the foot using coded structured light: a technical report

A new methodology to identify minimum strain anatomical lines based on 3-D digital image correlation

Foot and footwear biomechanics and gait

Contact Info

Product

Resources

About