Foot Model for Investigating Foot Biomechanics and Footwear Design

2014 ◽  
pp. 3-18 ◽  
Author(s):  
Ming Zhang ◽  
Jia Yu ◽  
Yan Cong ◽  
Yan Wang ◽  
Jason Cheung
Keyword(s):  
Foot Biomechanics ◽  
Foot Model ◽  
Footwear Design

scholarly journals Evaluating the Biomechanics of the Pediatric Foot in Turner Syndrome

2012 ◽  
Vol 102 (3) ◽  
pp. 259-263
Author(s):  
Stewart C. Morrison ◽  
Alexander Izod ◽  
Ryan Mahaffey
Keyword(s):  
Turner Syndrome ◽  
Lower Limb ◽  
Comprehensive Evaluation ◽  
Genetic Disorder ◽  
General Characteristic ◽  
Biomechanical Assessment ◽  
Foot Biomechanics ◽  
Pediatric Foot ◽  
Foot Model ◽  
Foot Function

Turner syndrome is a genetic disorder that can present clinically with multiple concurrent comorbidities. This case report describes a 12-year-old girl with Turner syndrome who was referred for podiatric medical assessment and explores the application of optoelectronic stereophotogrammetry in the biomechanical assessment of the foot and lower limb. A four-segment kinematic foot model using 14-mm reflective markers was applied to the foot and lower limb of the patient to track motion at the tibia, rearfoot, forefoot, and hallux. Kinematic results presented in this case study illustrate evidence of excessive foot pronation throughout the stance phase of gait. Whether excessive pronation is a general characteristic of foot function in Turner syndrome remains to be confirmed, but the findings presented suggest that a comprehensive evaluation of foot biomechanics in patients with Turner syndrome may be warranted. (J Am Podiatr Med Assoc 102(3): 259–263, 2012)

Merging Footwear Design and Functionality

2020 ◽  
Vol 20 (4) ◽  
pp. 372-381
Author(s):  
Suzana Kutnjak-Mravlinčić ◽  
Jadranka Akalović ◽  
Sandra Bischof
Keyword(s):  
Science And Technology ◽  
Raw Material ◽  
Quality Level ◽  
Material Content ◽  
Production Concept ◽  
Wear And Tear ◽  
Similar Appearance ◽  
Key Aspects ◽  
Footwear Design

AbstractFunctionality and appearance are key aspects of good footwear. Developments in recent science and technology offer a wider scope of innovations, contributing to diversity and higher complexity of the production concept of footwear. Contemporary industrial footwear market offers a practically limitless number of new design and fashion solutions, often of quite similar appearance, but with significant differences in quality level, both regarding manufacture, raw material content, durability, and in some special functional finishes. The materials for footwear manufacture are functionalized for functional protective purposes, such as antimicrobial, waterproofing, fire resistant, wear and tear resistant, and recently for some therapeutical purposes. Novelties in material functionalization for the materials built in the footwear are most often promoted and presented on tags and labels and are used as advertisement issues, while some functionalities have become a logo for some brands.

scholarly journals Multidisciplinary approach in the treatment of tendinous foot involvement in rheumatoid arthritis

2021 ◽  
Author(s):  
Pilar Macarrón Pérez ◽  
María del Rosario Morales Lozano ◽  
Cristina Vadillo Font ◽  
Lidia Abásolo Alcázar ◽  
Carmen Martínez Rincón ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Functional Recovery ◽  
Structural Damage ◽  
Pain Scale ◽  
Ultrasound Monitoring ◽  
Pain Disability ◽  
Heel Pad ◽  
Foot Biomechanics ◽  
Baseline Status ◽  
Degree Of Satisfaction

Abstract Introduction Patients with rheumatoid arthritis frequently consult for pain resulting from involvement of the tendons of the foot. This pain negatively affects foot biomechanics and quality of life. The most widely used treatment option for this condition is ultrasound-guided steroid injection, while other treatments were recommended such as heel pad, splints, and footwear. Objective To evaluate a joint intervention (rheumatology and podiatry) comprising an orthotic-podiatric treatment and infiltrations. We evaluated the response using ultrasound monitoring, a pain scale, functional tests, and assessment of patient satisfaction. Methods We performed a non-controlled blinded prospective interventional study of 96 patients with foot pain and selected those with ultrasound-confirmed tendon involvement. Patients enrolled started intervention treatment and were followed for 6 months. The outcome of the intervention was compared with the patient’s baseline status. The pre-post differences in the secondary variables (pain, disability) were analyzed using the t test and contingency tables or the Mann–Whitney test. Results Using our protocol, we recorded a rapid and significant reduction in the intensity of pain, in the foot function index, and in the ultrasound parameters (grayscale and Doppler). Structural damage to the tendon improved more slowly, with significant outcomes only at the last visit with respect to baseline. Abnormal foot support was detected in 50% of patients, and 79.5% were using inappropriate footwear. Conclusions Our multidisciplinary therapeutic protocol enabled a very significant improvement in tendon involvement. It was well-tolerated, with a high degree of satisfaction, and was easily evaluated using ultrasound. No changes in background medication were necessary. Key Points• Multidisciplinary evaluation of patients with RA is advisable because it improves the treatment management in cases of inflammatory activity and structural abnormalities of the foot.• Comprising orthopedic-podiatric treatment (heel, splints, and suitable footwear) and infiltrations, in terms of clinical, ultrasound, and functional recovery of the foot tendons.• The therapy protocol we propose led to a significant improvement in pain relief and functional recovery.

scholarly journals The Design and Simulation of a 16-Sensors Plantar Pressure Insole Layout for Different Applications: From Sports to Clinics, a Pilot Study

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1450
Author(s):  
Alfredo Ciniglio ◽  
Annamaria Guiotto ◽  
Fabiola Spolaor ◽  
Zimi Sawacha
Keyword(s):  
Pressure Distribution ◽  
Plantar Pressure ◽  
Center Of Pressure ◽  
Reaction Force ◽  
Weight Lifting ◽  
Lower Limbs ◽  
Plantar Pressure Distribution ◽  
Drop Landing ◽  
Mean Pressure ◽  
Footwear Design

The quantification of plantar pressure distribution is widely done in the diagnosis of lower limbs deformities, gait analysis, footwear design, and sport applications. To date, a number of pressure insole layouts have been proposed, with different configurations according to their applications. The goal of this study is to assess the validity of a 16-sensors (1.5 × 1.5 cm) pressure insole to detect plantar pressure distribution during different tasks in the clinic and sport domains. The data of 39 healthy adults, acquired with a Pedar-X® system (Novel GmbH, Munich, Germany) during walking, weight lifting, and drop landing, were used to simulate the insole. The sensors were distributed by considering the location of the peak pressure on all trials: 4 on the hindfoot, 3 on the midfoot, and 9 on the forefoot. The following variables were computed with both systems and compared by estimating the Root Mean Square Error (RMSE): Peak/Mean Pressure, Ground Reaction Force (GRF), Center of Pressure (COP), the distance between COP and the origin, the Contact Area. The lowest (0.61%) and highest (82.4%) RMSE values were detected during gait on the medial-lateral COP and the GRF, respectively. This approach could be used for testing different layouts on various applications prior to production.

Foot structure in obese children: Implications for footwear design

2011 ◽  
Vol 5 ◽  
pp. 36 ◽  
Author(s):  
D.L. Riddiford-Harland ◽  
J.R. Steele ◽  
L.A. Baur
Keyword(s):  
Obese Children ◽  
Foot Structure ◽  
Footwear Design

scholarly journals Sequential Metatarsal Fatigue Fractures Secondary to Abnormal Foot Biomechanics

2006 ◽  
Vol 171 (4) ◽  
pp. 292-297 ◽  
Author(s):  
Michael R. Carmont ◽  
John H. Patrick ◽  
Victor N. Cassar-Pullicino ◽  
Neil J. Postans ◽  
Stuart M. Hay
Keyword(s):  
Foot Biomechanics ◽  
Fatigue Fractures

scholarly journals Two-Segment Foot Model for the Biomechanical Analysis of Squat

2017 ◽  
Vol 2017 ◽  
pp. 1-11
Author(s):  
E. Panero ◽  
L. Gastaldi ◽  
W. Rapp
Keyword(s):  
Body Weight ◽  
Inverse Dynamics ◽  
Statistical Significance ◽  
Lower Limbs ◽  
Biomechanical Analysis ◽  
Wide Range ◽  
Foot Model ◽  
Partial Body ◽  
The One ◽  
Midtarsal Joint

Squat exercise is acquiring interest in many fields, due to its benefits in improving health and its biomechanical similarities to a wide range of sport motions and the recruitment of many body segments in a single maneuver. Several researches had examined considerable biomechanical aspects of lower limbs during squat, but not without limitations. The main goal of this study focuses on the analysis of the foot contribution during a partial body weight squat, using a two-segment foot model that considers separately the forefoot and the hindfoot. The forefoot and hindfoot are articulated by the midtarsal joint. Five subjects performed a series of three trials, and results were averaged. Joint kinematics and dynamics were obtained using motion capture system, two force plates closed together, and inverse dynamics techniques. The midtarsal joint reached a dorsiflexion peak of 4°. Different strategies between subjects revealed 4° supination and 2.5° pronation of the forefoot. Vertical GRF showed 20% of body weight concentrated on the forefoot and 30% on the hindfoot. The percentages varied during motion, with a peak of 40% on the hindfoot and correspondently 10% on the forefoot, while the traditional model depicted the unique constant 50% value. Ankle peak of plantarflexion moment, power absorption, and power generation was consistent with values estimated by the one-segment model, without statistical significance.

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