Abstract
Figures and Tables
Fig. 1
Representative photographs showing the navicular bone. (A) Right navicular bone showing well-marked groove leading to vascular foramen (arrow) on dorsal surface. (B) Left navicular bone showing the measurements on dorsal surface of the navicular bone. RP, midpoint of navicular tuberosity; D1, the distance from the RP to the first vascular foramina; D2, the distance from the RP to the second vascular foramina; D3, the distance from the RP to the third vascular foramina; D4, the distance from the RP to the fourth vascular foramina; L, length of the navicular bone.
![acb-50-93-g001](/upload/SynapseData/ArticleImage/1049ACB/acb-50-93-g001.jpg)
Fig. 2
Representative photographs showing different surfaces of navicular bone. (A) Right navicular bone showing the oval type vascular foramina (arrows) on dorsal surface. (B) Left navicular bone showing the circular type vascular foramina (arrows) on the plantar surface. (C) Right navicular bone showing the circular type vascular foramina (arrow) on lateral surface. (D) Left navicular bone showing the oval type vascular foramina (arrows) on medial surface.
![acb-50-93-g002](/upload/SynapseData/ArticleImage/1049ACB/acb-50-93-g002.jpg)
Table 1
Showing the distribution of vascular foramina on different surfaces of navicle (n=100)
![acb-50-93-i001](/upload/SynapseData/ArticleImage/1049ACB/acb-50-93-i001.jpg)
Surface | Minimum number | Maximum number | Total number (%) |
---|---|---|---|
Dorsal | 3 | 10 | 604 (41.9) |
Plantar | 1 | 10 | 446 (30.9)a) |
Lateral | 1 | 6 | 280 (19.4)b) |
Medial | 0 | 4 | 112 (7.8)c) |
a)A statistically significant difference in total number of foramina on dorsal surface when compared to plantar surface by Mann-Whitney U test (U=2,755, P=0.001). b)A statistically significant difference in total number of foramina on dorsal surface when compared to lateral surface by Mann-Whitney U test (U=626.5, P=0.001). c)A statistically significant difference in total number of foramina on dorsal surface when compared to medial surface by Mann-Whitney U test (U=43, P=0.001).
Table 2
Showing the distribution of vascular foramina on different surfaces between right navicle (n=50) and left navicle (n=50)
![acb-50-93-i002](/upload/SynapseData/ArticleImage/1049ACB/acb-50-93-i002.jpg)
Surface | Side | Minimum number | Maximum number | P-value |
---|---|---|---|---|
Dorsal | R | 3 | 10 | 0.897 |
L | 3 | 10 | ||
Plantar | R | 1 | 10 | 0.327 |
L | 1 | 8 | ||
Lateral | R | 1 | 5 | 0.129 |
L | 1 | 6 | ||
Medial | R | 0 | 4 | 0.741 |
L | 0 | 3 |
Table 3
Showing the distances measured on dorsal surface of navicle (n=100)
![acb-50-93-i003](/upload/SynapseData/ArticleImage/1049ACB/acb-50-93-i003.jpg)
Difference between right and left sides was statistically not significant. R, right navicle; L, left navicle; D1, the distance from the midpoint of navicular tuberosity (RP) to the first foramina on the dorsal surface of the bone; D2, the distance from the RP to the second foramina on the dorsal surface of the bone; D3, the distance from the RP to the third foramina on the dorsal surface of the bone; D4, the distance from the RP to the fourth foramina on the dorsal surface of the bone; D5, the distance from the RP to the fifth foramina on the dorsal surface of the bone; D6, the distance from the RP to the sixth foramina on the dorsal surface of the bone; D7, the distance from the RP to the seventh foramina on the dorsal surface of the bone; D8, the distance from the RP to the eight foramina on the dorsal surface of the bone; D9, the distance from the RP to the ninth foramina on the dorsal surface of the bone; D10, the distance from the RP to the tenth foramina on the dorsal surface of the bone.