Angular dimensions and squatting facets in human dry tali of South Indian origin

Q4 Medicine

Italian journal of anatomy and embryology Pub Date : 2018-01-01 DOI:10.13128/IJAE-24157

S. Narayanan, N. Shankar, V. Kishan, V. Balasubramanyam

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Abstract

The angular dimensions of the talus are indicative of its biomechanical role in load transmission. Squatting facets on the neck of the talus are indicative of habitual squatting. The primary objective of this study was to estimate the strength of association between the talar angles and the presence of squatting facets. The secondary objectives were to estimate the side differences in the angular dimensions and to assess the reliability of the method. One hundred and sixty dry tali of unknown sex were studied. The neck angle, vertical angle, torsion angle, trochlear surface angle and depth angle were measured using a photographic method. The presence of squatting facets was noted. The mean and standard deviation of those angles were 108.3 ± 5.23, 89.87 ± 3.97, 37.57 ± 5.62, 9.7 ± 3.3 and 156 ± 5.1 degrees respectively. The neck, vertical and depth angles were significantly higher on the left side. There were significant positive correlations between the neck and vertical angles, the neck and depth angles and the torsion and depth angles. Squatting facets were noted in 90 of the 160 (56%) of the tali. The torsion angle was significantly higher in tali with squatting facets. Intraobserver and inter-observer reliability of the methods were found to be good to excellent. The findings of this study indicate the factors that can possibly influence the magnitude of the talar angles. This data can be useful for designing talar prostheses and analyzing the biomechanical interface of the hind foot bones.

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南印度起源的人类干塔利的角尺寸和蹲面

距骨的角度尺寸表明其在载荷传递中的生物力学作用。距骨颈部的深蹲切面表明习惯性深蹲。本研究的主要目的是估计距骨角和蹲足关节面之间的关联强度。次要目标是估计角度尺寸的侧面差异，并评估该方法的可靠性。对160株性别不明的干tali进行了研究。采用摄影法测量颈角、垂角、扭转角、滑车表面角和深度角。注意到蹲面的存在。这些角度的平均值和标准差分别为108.3±5.23度、89.87±3.97度、37.57±5.62度、9.7±3.3度和156±5.1度。左侧颈角、垂直角和纵深角明显较高。颈部与垂直角、颈部与深度角、扭转角与深度角之间存在显著正相关。在160个tali中，有90个(56%)存在下蹲面。深蹲关节的扭转角度明显更高。结果表明，该方法在观察者内部和观察者之间的信度从良好到优异。本研究结果提示了可能影响距骨角大小的因素。该数据可用于设计距骨假体和分析后脚骨的生物力学界面。

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来源期刊

Italian journal of anatomy and embryology Medicine-Embryology

CiteScore

0.20

自引率

0.00%

发文量

期刊介绍： The Italian Journal of Anatomy and Embryology, founded in 1901 by Giulio Chiarugi, Anatomist at Florence University, is a peer-reviewed journal sponsored by the Italian Society of Anatomy and Embryology. The journal publishes original papers, invited review articles, historical article, commentaries, obituitary, and book reviews. Its main focus is to understand anatomy through an analysis of structure, function, development and evolution. Priority will be given to studies of that clearly articulate their relevance to the anatomical community. Focal areas include: experimental studies, contributions based on molecular and cell biology and on the application of modern imaging techniques; comparative functional morphology; developmental biology; functional human anatomy; methodological innovations in anatomical research; significant advances in anatomical education. Studies that are essentially descriptive anatomy are appropriate only if they communicate clearly a broader functional or evolutionary significance. All papers should be submitted in English and must be original works that are unpublished and not under consideration by another journal. An international Editorial Board and reviewers from the anatomical disciplines guarantee a rapid review of your paper within two to three weeks after submission.