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Comparison of Two Methods for the Measurement of Medial and Lateral Metapodial Bones in Karagouniko Sheep (Ovis aries, L. 1758) and Hellenic Goat (Capra hircus, L. 1758).

Pourlis A, Chatzis T, Katsoulos P - Anat Res Int (2014)

Bottom Line: Complementarily, the lengths of medial and lateral metapodials in these species were compared.Afterwards, each bone was scanned and the same lengths were digitally measured twice using commercial software.In goats, the lateral length of both metacarpals and metatarsals was significantly higher than medial length (P < 0.05); in sheep the lateral length was significantly higher compared to the medial one only in metatarsal bones (P < 0.05).

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Anatomy, Histology & Embryology, Faculty of Veterinary Medicine, University of Thessaly, 224 Trikalon Street, 43100 Karditsa, Greece.

ABSTRACT
The objective of this study was to compare the metapodial lengths of sheep and goats measured with a caliper with those measured using a 2-dimensional digital method. Complementarily, the lengths of medial and lateral metapodials in these species were compared. The limbs of 30 ewes and 30 goats were used. After preparation, the lateral and medial length of the metacarpals and metatarsals were measured twice with a caliper. Afterwards, each bone was scanned and the same lengths were digitally measured twice using commercial software. Data analysis revealed strong linear relationship between the two methods but the absolute relative deviation of the measurements with the caliper was significantly higher than those with the 2-dimensional method (P < 0.05). All lengths measured with the caliper were significantly higher compared to those measured with the 2-dimensional method (P < 0.05). In goats, the lateral length of both metacarpals and metatarsals was significantly higher than medial length (P < 0.05); in sheep the lateral length was significantly higher compared to the medial one only in metatarsal bones (P < 0.05). In conclusion, the 2-dimensional method is more accurate for the measurement of the metapodials' length than the caliper and there is asymmetry between the medial and lateral metapodials in these species.

No MeSH data available.


Bland-Altman plots showing the difference between bone lengths (cm) of goats obtained with the caliper and the 2-dimensional method plotted against the mean of the 2 methods.
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fig3: Bland-Altman plots showing the difference between bone lengths (cm) of goats obtained with the caliper and the 2-dimensional method plotted against the mean of the 2 methods.

Mentions: The regression analysis according to Passing and Bablok revealed the equations presented in Table 1 between the metapodial lengths obtained with the caliper and the 2-dimensional method. The analysis of Bland and Altman plots for sheep (Figure 2) and goats (Figure 3) indicates that the two methods are linear and the 2-dimensional method is adequate for the measurement of the lengths of metacarpal and metatarsal bones in these animal species. The precision was over 97% for all bones in both sheep and goats (Table 1) confirming the strong linear relationship between the metapodial lengths measured by the two methods. The accuracy represents a bias correction factor, which measures the deviation of the best-fit line from the 45° line through the origin. In the present study the accuracy was over 97% in all comparisons indicating that the best-fit line almost fits the 45° line.


Comparison of Two Methods for the Measurement of Medial and Lateral Metapodial Bones in Karagouniko Sheep (Ovis aries, L. 1758) and Hellenic Goat (Capra hircus, L. 1758).

Pourlis A, Chatzis T, Katsoulos P - Anat Res Int (2014)

Bland-Altman plots showing the difference between bone lengths (cm) of goats obtained with the caliper and the 2-dimensional method plotted against the mean of the 2 methods.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4230196&req=5

fig3: Bland-Altman plots showing the difference between bone lengths (cm) of goats obtained with the caliper and the 2-dimensional method plotted against the mean of the 2 methods.
Mentions: The regression analysis according to Passing and Bablok revealed the equations presented in Table 1 between the metapodial lengths obtained with the caliper and the 2-dimensional method. The analysis of Bland and Altman plots for sheep (Figure 2) and goats (Figure 3) indicates that the two methods are linear and the 2-dimensional method is adequate for the measurement of the lengths of metacarpal and metatarsal bones in these animal species. The precision was over 97% for all bones in both sheep and goats (Table 1) confirming the strong linear relationship between the metapodial lengths measured by the two methods. The accuracy represents a bias correction factor, which measures the deviation of the best-fit line from the 45° line through the origin. In the present study the accuracy was over 97% in all comparisons indicating that the best-fit line almost fits the 45° line.

Bottom Line: Complementarily, the lengths of medial and lateral metapodials in these species were compared.Afterwards, each bone was scanned and the same lengths were digitally measured twice using commercial software.In goats, the lateral length of both metacarpals and metatarsals was significantly higher than medial length (P < 0.05); in sheep the lateral length was significantly higher compared to the medial one only in metatarsal bones (P < 0.05).

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Anatomy, Histology & Embryology, Faculty of Veterinary Medicine, University of Thessaly, 224 Trikalon Street, 43100 Karditsa, Greece.

ABSTRACT
The objective of this study was to compare the metapodial lengths of sheep and goats measured with a caliper with those measured using a 2-dimensional digital method. Complementarily, the lengths of medial and lateral metapodials in these species were compared. The limbs of 30 ewes and 30 goats were used. After preparation, the lateral and medial length of the metacarpals and metatarsals were measured twice with a caliper. Afterwards, each bone was scanned and the same lengths were digitally measured twice using commercial software. Data analysis revealed strong linear relationship between the two methods but the absolute relative deviation of the measurements with the caliper was significantly higher than those with the 2-dimensional method (P < 0.05). All lengths measured with the caliper were significantly higher compared to those measured with the 2-dimensional method (P < 0.05). In goats, the lateral length of both metacarpals and metatarsals was significantly higher than medial length (P < 0.05); in sheep the lateral length was significantly higher compared to the medial one only in metatarsal bones (P < 0.05). In conclusion, the 2-dimensional method is more accurate for the measurement of the metapodials' length than the caliper and there is asymmetry between the medial and lateral metapodials in these species.

No MeSH data available.