Computational models are useful tools to study the biomechanics of human joints. Their predictive performance is heavily dependent on bony anatomy and soft tissue properties. Imaging data provides anatomical requirements while approximate tissue properties are implemented from literature data, when available. We sought to improve the predictive capability of a computational foot/ankle model by optimizing its ligament stiffness inputs using feedforward and radial basis function neural networks. While the former demonstrated better performance than the latter per mean square error, both networks provided reasonable stiffness predictions for implementation into the computational model.
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http://dx.doi.org/10.1155/2017/3602928 | DOI Listing |
Foot Ankle Int
January 2025
Royal National Orthopaedic Hospital NHS Trust, Foot & Ankle Unit, Stanmore, United Kingdom.
Background: Ankle and hindfoot fusion in the presence of large bony defects represents a challenging problem. The purpose of this study was to evaluate outcomes of patients who underwent ankle-hindfoot fusions with impaction bone grafting (IBG) with morselized femoral head allograft to fill large bony void defects.
Methods: This was a 3-center, retrospective review of a consecutive series of 49 patients undergoing ankle or hindfoot fusions with femoral head IBG for filling large bony defects.
Foot Ankle Int
January 2025
Foot and Ankle Surgery Department, Honghui Hospital of Xi'an Jiaotong University, Xi'an, China.
Background: Calcaneal fracture malunion (CFM) commonly occurs with multiple pathologic changes and progressive pain and difficulty walking. The purpose of this study was to propose a modified 3-plane joint-preserving osteotomy for the treatment of CFM with subtalar joint incongruence, and to compare its efficacy to subtalar arthrodesis.
Methods: A retrospective comparative analysis of the data of 56 patients with CFM admitted from January 2017 to December 2022 was performed.
Foot Ankle Int
January 2025
Division of Foot and Ankle, Department of Orthopaedic Surgery, Duke University School of Medicine, Durham, NC, USA.
Background: Hallux valgus (HV) is a complex, multiplanar deformity. In this study, we examined the interrelationships between various components of this deformity using weightbearing computed tomography (WBCT). We hypothesized that the severity of traditional axial plane deformities would correlate with malpositioning of the metatarsosesamoid complex, first-ray coronal rotational deformity, and malalignment of the hindfoot and midfoot.
View Article and Find Full Text PDFJ Biomech
January 2025
UNC-NC State Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina at Chapel Hill, 1407, Engineering Building III, 1840 Entrepreneur Drive, Raleigh, NC 27695, USA. Electronic address:
Continuous relative phase (CRP) quantifies coordination for cyclic motions as the difference in the phase portrait locations between its constituent coordinates and has been widely used in populations with neuromuscular impairments. Continuous analyses, like statistical parameter mapping (SPM), provide greater resolution than traditional techniques that first compress CRP across a section of the cycle to a single point, like mean average relative phase (MARP). However, both analyses neglect the effect of intermediate event timing (e.
View Article and Find Full Text PDFFoot Ankle Int
January 2025
University Center for Orthopaedics, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus at TU Dresden, Dresden, Germany.
Background: Bosworth fractures (BFs) with entrapment of a fibular fragment behind the posterior malleolus (PM) are rare but potentially serious injuries to the ankle. Despite an increased awareness through a more regular use of computed tomography (CT) scanning, there is still a scarcity of clinical outcome studies.
Methods: Over a course of 25 years, data on 23 patients treated for BF at our institutions (mean age 44 years) were collected prospectively.
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