Investigation of Os Coxae in Horses Using Geometric Morphometry Method

Abstract

In contrast to normal morphometric measurements, geometric morphometry is a method that can explain the differences and variations on the x-y coordinates of the specified points on a 2D plane. In this method, two-dimensional samples, such as pictures or x-rays, are used. The study aims to investigate the right os coxae of 23 adults (12 males, 11 females) horses geometrically. Photographs were taken from each sample at 120 centimeters distance and landmarks were made on these samples. 13 determining landmarks were used on os coxae. Medial endpoint of the narrowest section of the body of ilium and medial endpoint of ischial spine points were found to be statistically significant in terms of female and male distinction (P < 0.001). It was seen that the remaining points in the ventrolateral section did not have a statistically significant difference in gender discrimination. However, the difference between the genders in the ventral endpoint of coxal tuber and midpoint of coxal tuber in the dorsolateral section was statistically significant (P < 0.001). The difference between females and males is visually indicated using the morphology program. In females, it was observed that the points in the inner region are more lateral than males. Gender analysis studies can be conducted on materials such as bone using the morphometric results obtained as a result of such modeling studies.

Evaluation of sex differences in pelvis and femur x‐ray images in British shorthair cats by geometric morphometric method

“…This indicates that the pelvis exhibits differences between sexes in terms of shape. In a geometric morphometric study focusing on sex differences and conducted on the coxae of horses (Gündemir et al., 2020b), it has been observed that some anatomical points show statistically significant differences between sexes. However, in this study, the photographs of the coxae were taken from a lateral perspective, and there are not many matching points with our study.…”

“…Study on the wing shapes of vinegar flies (Gidaszewski et al., 2009), comparison on the shells of turtles (Duro et al., 2021), turkey (Gündemir, Özkan, Dayan, & Aydoğdu, 2020) and quail (Szara et al., 2022) cranium comparisons, study on horse os coxae (Gündemir et al., 2020b) can be given as examples for sexual dimorphism studies using geometric morphometry technique.…”

Pelvis shape analysis with geometric morphometry in crossbreed cats

“…Studies examining os coxae with geometric morphometry are available in the literature (Gündemir, Özkan, İnce, et al, 2020). In the study performed in horses, it was said that the ventral endpoint of the coxal tuber and mid-end of the coxal tuber were more lateral in males.…”

“…In studies in which mostly skulls were used, differences in shape between sexes were revealed as well as differences between species (Demircioglu, Demiraslan, et al, 2021; Gündemir, Özkan, Dayan, et al, 2020; Gürbüz et al, 2020, 2022; Szara et al, 2022). In these studies, it was reported that shape analysis was performed by using x‐ray images as well as 2D photographs (Gündemir, Özkan, İnce, et al, 2020). However, there are limited studies on shape analysis about the pelvis, which is an important structure in terms of shape (Waltenberger et al, 2021).…”

Investigating metacarpi of Hamdani sheep via different measurement and modelling methods: A methodological study

“…Thus, it is important for anatomical and morphometric studies on the sheep breeds to reveal the breed-specific characteristics. In the literature, there are morphologic and morphometric studies on the metacarpus of different sheep breeds (Demiraslan, Gürbüz, Aslan, & Akbulut, 2015;Gündemir, Pazvant, Jashari, & Dayan, 2020;Gürbüz, Demiraslan, Kırbaş, & Aslan, 2018;Pazvant et al, 2015).…”