Symmetry analysis of talus bone

Islam, Kamrul; Dobbe, Ashlee; Komeili, Amin; Duke, Kajsa; El‐Rich, Marwan; Dhillon, Sukhvinder; Adeeb, Samer; Jomha, Nadr M.

doi:10.1302/2046-3758.35.2000264

Cited by 42 publications

(16 citation statements)

References 23 publications

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“…The high degree of symmetry is in line with earlier studies that have demonstrated a high degree of symmetry in the lower extremity (Latimer and Lowrance, 1965). Specifically for the hindfoot, a strong degree of symmetry was demonstrated for the whole talus (Islam et al, 2014), the calcaneus (Stephan et al, 2014) and tibia, fibula, talus, and calcaneus (Tümer et al, 2018). A clear cause for the asymmetry in type 12100% 80The diagonal with bold numbers represent the corresponding classifications between the two observers.…”

Section: Bilateral Symmetrysupporting

confidence: 87%

“…Despite the known variation only two studies analyzed the degree of bilateral symmetry of the facet joints: one describing the pattern of calcaneal facets (Ragab et al, 2003), and another one describing the surface area and three-dimensional (3D) orientation of the calcaneal facets (Stephan et al, 2014). In general, literature describing the bilateral symmetry of the hindfoot is scarce (Shultz and Nguyen, 2007;Islam et al, 2014;Tümer et al, 2018). This is remarkable since many surgeons use the contralateral noninjured side as reference for anatomical reduction in case of a fractured bone (Pierre et al, 2010;Dobbe et al, 2011;Young et al, 2013;Ten Berg et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Bilateral symmetry of the subtalar joint facets and the relationship between the morphology and osteoarthritic changes

et al. 2019

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There is a paucity in the literature regarding bilateral symmetry between the facets of the subtalar joint. Often surgeons use the contralateral side as a reference when dealing with a fracture or other joint pathology. Moreover, the presence of osteoarthritic (OA) changes in the subtalar joint is suggested to have a relation with its morphology. In this study, we addressed both these issues. Forty pairs of cadaveric tali and calcanei were analyzed by dissection and measurement. Twenty pairs of asymptomatic calcanei were morphologically analyzed by computer tomography imaging. In the cadaveric feet, the length and width of the facets, the number and interfacet connections, the intersection angle, and the presence of OA changes were registered. In the healthy feet, the orientation and curvature of the posterior facet were analyzed based on cylinder fittings. Bilateral symmetry was tested with paired Student's t tests. Significant associations between morphometric parameters and the presence of OA changes were tested with generalized estimating equation logistic regression models. The morphometric data demonstrated a high degree of bilateral symmetry. The types of tali and calcanei between left and right differed in about one‐fifth of the individuals. No significant interactions were found between morphological parameters and the presence of OA changes. Only age had a significant association. There was a high degree of symmetry in the subtalar joints facets. No significant associations were found between OA changes and morphological features, whereas other studies did. Further research is needed to explore this relationship in further detail. Clin. Anat., 33:997–1006, 2020. © 2019 Wiley Periodicals, Inc.

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Section: Bilateral Symmetrysupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Bilateral symmetry of the subtalar joint facets and the relationship between the morphology and osteoarthritic changes

et al. 2019

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“…For example, surgeons assume the bilateral symmetry of the human skeletal system for surgery purposes. Also, Islam et al demonstrated the symmetric morphology of some human bones [ 21 ]. Thus, the mirror technique offers relatively accurate patient data and minimises imaging difficulties for the patient.…”

Section: Discussionmentioning

confidence: 99%

Application of 3D–printed and patient-specific cast for the treatment of distal radius fractures: initial experience

et al. 2017

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BackgroundDistal radius fracture is common in the general population. Fracture management includes a plaster cast, splint and synthetic material cast to immobilise the injured arm. Casting complications are common in those conventional casting technologies. 3D printing technology is a rapidly increasing application in rehabilitation. However, there is no clinical study investigating the application of a 3D–printed orthopaedic cast for the treatment of bone fractures. We have developed a patient-specific casting technology fabricated by 3D printing. This pioneering study aims to use 3D–printed casts we developed for the treatment of distal radius fractures, to provide the foundation for conducting additional clinical trials, and to perform clinical assessments.MethodTen patients with ages between 5 and 78 years are involved in the clinical trial. Patients are applied 3D–printed casts we developed. Orthopaedic surgeons carried out a six-week follow-up to examine clinical outcomes. Two questionnaires were developed for the assessment of clinical efficacy and patients’ satisfaction. These questionnaires are completed by physicians and participating patients.ResultsA 3D–printed cast creates a custom-fitted design to maintain the fractured bone alignment. No loss of reduction is found in all patients. Compartment syndrome and pressure sores are not present. Patient comfort gets positive scores on the questionnaire. All (100%) of the patients opt for the 3D–printed cast instead of the conventional plaster cast.DiscussionA patient-specific, 3D–printed cast offers a proper fit to immobilise an injured arm and holds the fracture reduction appropriately. A custom-fitted structure reduces the risk of pressure-related complications due to the high and concentrated local stress. The ventilated and lightweight design minimises interference with a patient’s daily activities and reduces the risk of cutaneous complications. Patients express a strong preference for using a 3D–printed cast instead of a plaster cast. Limitations of the novel cast include a slight odour after heavy sweating and the relatively high cost due to the limitations of current 3D printing technologies.ConclusionsThis pioneering study is the first clinical trial on the application of a 3D–printed cast for the treatment of forearm fractures. The novel casting technology heals the fracture effectively without casting complications. The 3D–printed cast is patient-specific and ventilated as well as lightweight, and it features both increased patient comfort and satisfaction.

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“…Islam et al conducted a study on the morphology of the right and left tali in the same living subjects using a CT database with contributions by 3D analyses [18]. They found a strong degree of symmetry between the two sides [18]. However, their measurements were derived from simulations made from CT images [18].…”

Section: Plos Onementioning

confidence: 99%

“…They found a strong degree of symmetry between the two sides [18]. However, their measurements were derived from simulations made from CT images [18]. Based on measurement of the actual talus with no need for simulation, the present study combined data collection via systematic Vernier caliper measurement of morphometric profiles and 3D scans using a 3D scanner to obtain geometric measurement parameters of the human talus.…”

Section: Plos Onementioning

confidence: 99%

Morphometric geometric differences between right and left human tali: A cadaveric study of fluctuating asymmetry via systematic measurement and three-dimensional scanning

et al. 2020

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Background Little is known about differences in the size and morphology of the right and left human tali. The present study demonstrates differences between right and left talar morphometric geometric profiles as fluctuating asymmetry in matched pairs of cadaveric specimens. Methods In total, 24 tali were collected in this study. All eligible tali were systematically measured with a Vernier caliper and three-dimensional laser scanner, which provided data for further analysis regarding the talar morphometric geometric profiles. Data were calculated to demonstrate differences between the right and left talar profiles using a matched-pair method, including the general size of the talus. Results The average talar length was 53.5 mm, the average talar dome height was 31.2 mm, and the average talar body width was 41.3 mm. The average anterior trochlear width, middle trochlear width, posterior trochlear width, and trochlear length were 31.8, 31.2, 28.3, and 30.7 mm, respectively. Eleven matched pairs of intact tali were eligible for the matched-pair study. Paired t-tests showed significant differences in the talar dome height (P = 0.019), middle trochlear width (P = 0.027), and posterior trochlear width (P = 0.016) between the right

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Symmetry analysis of talus bone

Cited by 42 publications

References 23 publications

Bilateral symmetry of the subtalar joint facets and the relationship between the morphology and osteoarthritic changes

Bilateral symmetry of the subtalar joint facets and the relationship between the morphology and osteoarthritic changes

Application of 3D–printed and patient-specific cast for the treatment of distal radius fractures: initial experience

Morphometric geometric differences between right and left human tali: A cadaveric study of fluctuating asymmetry via systematic measurement and three-dimensional scanning

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