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Xiang L, Gu Y, Shim V, Yeung T, Wang A, Fernandez J. A hybrid statistical morphometry free-form deformation approach to 3D personalized foot-ankle models. J Biomech 2024; 168:112120. [PMID: 38677027 DOI: 10.1016/j.jbiomech.2024.112120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 02/12/2024] [Accepted: 04/22/2024] [Indexed: 04/29/2024]
Abstract
Foot and ankle joint models are widely used in the biomechanics community for musculoskeletal and finite element analysis. However, personalizing a foot and ankle joint model is highly time-consuming in terms of medical image collection and data processing. This study aims to develop and evaluate a framework for constructing a comprehensive 3D foot model that integrates statistical shape modeling (SSM) with free-form deformation (FFD) of internal bones. The SSM component is derived from external foot surface scans (skin measurements) of 50 participants, utilizing principal component analysis (PCA) to capture the variance in foot shapes. The derived surface shapes from SSM then guide the FFD process to accurately reconstruct the internal bone structures. The workflow accuracy was established by comparing three model-generated foot models against corresponding skin and bone geometries manually segmented and not part of the original training set. We used the top ten principal components representing 85 % of the population variation to create the model. For prediction validation, the average Dice similarity coefficient, Hausdorff distance error, and root mean square error were 0.92 ± 0.01, 2.2 ± 0.19 mm, and 2.95 ± 0.23 mm for soft tissues, and 0.84 ± 0.03, 1.83 ± 0.1 mm, and 2.36 ± 0.12 mm for bones, respectively. This study presents an efficient approach for 3D personalized foot model reconstruction via SSM generation of the foot surface that informs bone reconstruction based on FFD. The proposed workflow is part of the open-source Musculoskeletal Atlas Project linked to OpenSim and makes it feasible to accurately generate foot models informed by population anatomy, and suitable for rigid body analysis and finite element simulation.
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Affiliation(s)
- Liangliang Xiang
- Faculty of Sports Science, Ningbo University, China; Auckland Bioengineering Institute, The University of Auckland, New Zealand
| | - Yaodong Gu
- Faculty of Sports Science, Ningbo University, China; Auckland Bioengineering Institute, The University of Auckland, New Zealand.
| | - Vickie Shim
- Auckland Bioengineering Institute, The University of Auckland, New Zealand
| | - Ted Yeung
- Auckland Bioengineering Institute, The University of Auckland, New Zealand
| | - Alan Wang
- Auckland Bioengineering Institute, The University of Auckland, New Zealand; Center for Medical Imaging, Faculty of Medical and Health Sciences, The University of Auckland, New Zealand
| | - Justin Fernandez
- Faculty of Sports Science, Ningbo University, China; Auckland Bioengineering Institute, The University of Auckland, New Zealand; Department of Engineering Science, The University of Auckland, New Zealand
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Origo D, Buffone F, Montini G, Belluto D, Tramontano M, Dal Farra F. Foot Posture Index Does Not Correlate with Dynamic Foot Assessment Performed via Baropodometric Examination: A Cross-Sectional Study. Healthcare (Basel) 2024; 12:814. [PMID: 38667576 PMCID: PMC11050396 DOI: 10.3390/healthcare12080814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/29/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND Clinicians employ foot morphology assessment to evaluate the functionality of the method and anticipate possible injuries. This study aims to correlate static foot posture and the dynamic barefoot evaluation in a sample of healthy adult participants. METHODS The foot posture was evaluated using the Foot Posture Index-6 (FPI-6) and the dynamics were evaluated through baropodometric examination. Two operators independently assessed the participants' foot posture through FPI-6, and then a dynamic evaluation was performed by asking them to walk 8 times across a platform. One hundred participants (mean age: 32.15 ± 7.49) were enrolled. RESULTS The inter-rater agreement between the two assessors was found to be excellent. The majority of the feet belonged to the 0 < FPI < 4 class (32%), followed by the 4 < FPI < 8 (31%) and the FPI > 8 ranges (19.5%). Our "area of contact" analysis showed a significant poor correlation between FPI and total foot, midfoot, and the second metatarsophalangeal joint (MTPJ) (-0.3 < r < 0). Regarding "force" parameters, the analysis showed a poor correlation between the midfoot, hallux, and the second toe (-0.2 < r < 2); finally the "pressure" analysis showed a poor correlation between FPI, the fourth MTPJ, and the second toe (-0.2 < rs < 0.3) and a moderate correlation between the hallux (r = 0.374) and the fifth MTPJ (r = 0.427). CONCLUSIONS This study emphasizes the constrained correlation between static foot posture observation and dynamic barefoot examination.
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Affiliation(s)
- Daniele Origo
- Department of Research, SOMA Osteopathic Institute Milan, 20126 Milan, Italy; (D.O.); (F.B.); (G.M.); (D.B.); (F.D.F.)
| | - Francesca Buffone
- Department of Research, SOMA Osteopathic Institute Milan, 20126 Milan, Italy; (D.O.); (F.B.); (G.M.); (D.B.); (F.D.F.)
- Division of Pediatric, Manima Non-Profit Organization Social Assistance and Healthcare, 20125 Milan, Italy
- Principles and Practice of Clinical Research (PPCR), Harvard T.H. Chan School of Public Health–ECPE, Boston, MA 02115, USA
| | - Gabriele Montini
- Department of Research, SOMA Osteopathic Institute Milan, 20126 Milan, Italy; (D.O.); (F.B.); (G.M.); (D.B.); (F.D.F.)
| | - Daniele Belluto
- Department of Research, SOMA Osteopathic Institute Milan, 20126 Milan, Italy; (D.O.); (F.B.); (G.M.); (D.B.); (F.D.F.)
| | - Marco Tramontano
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater University of Bologna, 40126 Bologna, Italy
- Unit of Occupational Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
| | - Fulvio Dal Farra
- Department of Research, SOMA Osteopathic Institute Milan, 20126 Milan, Italy; (D.O.); (F.B.); (G.M.); (D.B.); (F.D.F.)
- Department Information Engineering, University of Brescia, Via Branze 38, 25123 Brescia, Italy
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Fallon Verbruggen F, Marenčáková J, Zahálka F. The relationship of three-dimensional foot morphology to clinical assessments and postural stability in adolescent male footballers. J Foot Ankle Res 2023; 16:50. [PMID: 37596668 PMCID: PMC10439672 DOI: 10.1186/s13047-023-00636-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 06/05/2023] [Indexed: 08/20/2023] Open
Abstract
BACKGROUND Foot morphology is associated with altered loading of the ankle-foot complex in adolescent footballers, predisposing to pain and injury. However, usual singular plane clinical assessments do not accurately capture the 3D nature of foot morphology. A new approach is 3D laser scanning, with statistical shape model techniques creating individual-to-group comparison. However, no research exists on the adolescent, football-playing foot. Furthermore, a link between 3D foot morphology, and usual clinical and performance measures would be beneficial for practical implementation. METHODS Four hundred forty-seven 3D foot scans from 224 elite male footballers (U12-U19) in bilateral stance were collected and further processed with statistical shape model techniques. Weighted shape parameters for individual principal components (Modes) were extracted for each foot. Centre of pressure displacement expressed as total travelled way in millimetres was calculated for bilateral and unilateral postural stability measures. Clinical assessments (Clarke's Angle, Resting Calcaneal Stance Position) were calculated on the 3D foot scans. Differences in weighted shape parameters, postural stability measures, and clinical assessments between age groups were determined by ANOVA. Correlations determined the relationship of Modes and clinical assessments to postural stability measures. Linear regression established if clinical assessments predicted the mode describing foot arch variation. RESULTS Age groups significantly differed for Mode 1 (foot length), Mode 2 (foot arch), and Mode 5 (tibial rotation relative to the foot) (p < 0.05). Resting Calcaneal Stance Position (r = .663) and Clarke's Angle (r = -.445) were low-to-moderately correlated to Mode 2 (both p < 0.001), and linear regression found they were both significant predictors of Mode 2, though only moderately (R2 = .522). There were low correlations of foot morphology to the postural stability tests. CONCLUSION This is the first study to describe the 3D foot morphology of male football-playing adolescents, and discover the differences between age groups. This will improve understanding and assessment of foot morphology in male adolescents because 2D techniques, as discovered in this study, do not strongly correlate to, nor predict, the 3D foot arch. Foot morphology was only lowly correlated to postural stability, thus a multifaceted program would be required for improvements.
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Affiliation(s)
- Ferdia Fallon Verbruggen
- Sport Research Centre, Faculty of Physical Education and Sport, Charles University, José Martího 269/31, Praha 6, 162 00, Prague, Czech Republic.
| | - Jitka Marenčáková
- Sport Research Centre, Faculty of Physical Education and Sport, Charles University, José Martího 269/31, Praha 6, 162 00, Prague, Czech Republic
| | - František Zahálka
- Sport Research Centre, Faculty of Physical Education and Sport, Charles University, José Martího 269/31, Praha 6, 162 00, Prague, Czech Republic
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Mei Q, Kim HK, Xiang L, Shim V, Wang A, Baker JS, Gu Y, Fernandez J. Toward improved understanding of foot shape, foot posture, and foot biomechanics during running: A narrative review. Front Physiol 2022; 13:1062598. [PMID: 36569759 PMCID: PMC9773215 DOI: 10.3389/fphys.2022.1062598] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022] Open
Abstract
The current narrative review has explored known associations between foot shape, foot posture, and foot conditions during running. The artificial intelligence was found to be a useful metric of foot posture but was less useful in developing and obese individuals. Care should be taken when using the foot posture index to associate pronation with injury risk, and the Achilles tendon and longitudinal arch angles are required to elucidate the risk. The statistical shape modeling (SSM) may derive learnt information from population-based inference and fill in missing data from personalized information. Bone shapes and tissue morphology have been associated with pathology, gender, age, and height and may develop rapid population-specific foot classifiers. Based on this review, future studies are suggested for 1) tracking the internal multi-segmental foot motion and mapping the biplanar 2D motion to 3D shape motion using the SSM; 2) implementing multivariate machine learning or convolutional neural network to address nonlinear correlations in foot mechanics with shape or posture; 3) standardizing wearable data for rapid prediction of instant mechanics, load accumulation, injury risks and adaptation in foot tissue and bones, and correlation with shapes; 4) analyzing dynamic shape and posture via marker-less and real-time techniques under real-life scenarios for precise evaluation of clinical foot conditions and performance-fit footwear development.
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Affiliation(s)
- Qichang Mei
- Faculty of Sports Science, Ningbo University, Ningbo, China,Research Academy of Grand Health, Ningbo University, Ningbo, China,Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand,*Correspondence: Qichang Mei, , ; Yaodong Gu, ,
| | - Hyun Kyung Kim
- School of Kinesiology, Louisiana State University, Baton Rouge, LA, United States
| | - Liangliang Xiang
- Faculty of Sports Science, Ningbo University, Ningbo, China,Research Academy of Grand Health, Ningbo University, Ningbo, China,Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Vickie Shim
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Alan Wang
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Julien S. Baker
- Centre for Health and Exercise Science Research, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
| | - Yaodong Gu
- Faculty of Sports Science, Ningbo University, Ningbo, China,Research Academy of Grand Health, Ningbo University, Ningbo, China,Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand,*Correspondence: Qichang Mei, , ; Yaodong Gu, ,
| | - Justin Fernandez
- Faculty of Sports Science, Ningbo University, Ningbo, China,Research Academy of Grand Health, Ningbo University, Ningbo, China,Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand,Department of Engineering Science, The University of Auckland, Auckland, New Zealand
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Boppana A, Anderson AP. Novel spacesuit boot design developed from dynamic foot shape modeling. FOOTWEAR SCIENCE 2021. [DOI: 10.1080/19424280.2021.1917702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Abhishektha Boppana
- Ann and H.J. Smead Department of Aerospace Engineering Sciences, University of Colorado Boulder, Boulder, CO, USA
| | - Allison P. Anderson
- Ann and H.J. Smead Department of Aerospace Engineering Sciences, University of Colorado Boulder, Boulder, CO, USA
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