Cow metatarsal vs metacarpal

The metatarsals and metacarpals of a cow have structural similarities with a few dissimilarities. Here, I will help you to point out the differentiating features of a cow metatarsal vs metacarpal with diagrams.

Quick answer: the cow metatarsal vs metacarpal shows differentiating features in length, surfaces of their bodies, and dorsal longitudinal grooves.

Thus, this article might help you to understand the comparative osteology of the manus and pes segments of limb bones of a cow skeleton.

What are the metatarsal and metacarpal in the cows?

Well, the metatarsals are the bones of the cow’s hindlimb that form the sub-section of the pes region. Whereas, the metacarpals are the bones of the cow’s forelimb that form the sub-section of the manus region.

Here, Figure 1 shows the location of metatarsals and metacarpals from the cow’s limb bones. It also shows the formation of the sub-segments of the pes and manus of the cow’s hindlimb and forelimb, respectively.

The metacarpal bone is structurally similar to the metacarpal bone. So, you might know the ideal features of the cow metacarpal first. Then, you may easily compare the metacarpal bone with the metatarsal, with the key differentiating points.

[For examination preparation or if you want to know the learning strategy of the cow’s metatarsal, you should follow the ways of the metacarpal bone’s description.]

Both the cow’s metatarsal and metacarpal are formed by the fusion of large metatarsals and metacarpals (III, IV), respectively. Again, you will also find a small metatarsal bone (II) and a small metacarpal bone (V) in a cow’s limb that attaches to the large bone on their respective aspect.

Here, Figure 2 shows the number of large and small metatarsals and metacarpals from the cow’s hindlimb and forelimb.

The attachment of the small bone to the large metatarsals and metacarpals can be a comparison/ differentiating feature. But, major differentiating/ comparison features will be found in the length, surfaces of the bodies of metatarsals and metacarpals, and in the appearance of longitudinal grooves.

Cow metatarsal vs metacarpal – comparison table

Here, Table 1 shows the key differentiating/ comparison features of the cow metatarsal vs metacarpal bones –

Features	Cow metatarsals	Cow metacarpals
Location of bone	Hindlimb (back)	Forelimb (front)
Sub-segment formation	Forms metatarsus of pes segment	Forms metacarpus of manus segment
Length of bone	Longer (more)	Short (less)
Number of large bones	Two Large metatarsal IIILarge metatarsal IV	TwoLarge metacarpal IIILarge metacarpal IV
Number of small bone	One Small metatarsal II	One Small metatarsal V
Shaft of the large bone	Four sided	Dorso-ventrally compressed
Surfaces of the shaft	Four surfacesDorsal surface Planter surface Lateral surface Medial surface	Two surfaces Dorsal surface Palmar surface
Longitudinal groove	More deep and wide	Shallow and narrow
Facet for small bone	Medial aspect of the proximal extremity	Lateral aspect of the proximal extremity

Thus, you may easily differentiate/ compare the cow’s metatarsals from the metacarpals with the features of their shaft. Here, Figure 3 shows the various differentiating osteological features of cow metatarsals from the metacarpals.

Length of the cow metatarsal vs metacarpal bones

The length of the metatarsals is more than that of the metacarpals in a cow skeleton. Nacambo et al. also showed that the average length of the cow’s metatarsals was 18.81±1.03 centimeters in their research manuscript. In contrast, the average length of the cow’s metacarpals was 16.78±0.95 centimeters.

They also measured the length of large metatarsals III and IV, and large metacarpals III and IV from both right and left limbs.  In each case, the length of the cow’s metatarsals was more than that of the metacarpals.

Here, Table 2 shows the average length of the cow’s metatarsals and metacarpals from both right and left limbs.

Length of the cow’s metatarsals
Right metatarsal bones		Left metatarsal bones
Metatarsal III	Metatarsal IV	Metatarsal III	Metatarsal IV
18.50 cm	18.82 cm	18.40 cm	18.75 cm
Length of the cow’s metacarpals
Right metatarsal bones		Left metacarpal bones
Metacarpal III	Metacarpal IV	Metacarpal III	Metacarpal IV
16.65 cm	16.75 cm	16.68 cm	16. 74 cm

Sources: (Sonnet et al., 2025; Nacambo et al.,2007; and  Azarpajouh et al.,2021.)

These similar features are also observed in the camel metacarpals and metatarsal bones (Allouch, G. M. & El-shambari, 2022). Again, the length of the goat’s metatarsals is also more than their metacarpals (Azarpajouh et al., 2021).

Here, Figure 4 shows the longer metatarsal bone and comparatively shorter metacarpal bones from the cow’s hindlimb and forelimb, respectively.

Shaft with surfaces in the cow’s metatarsals and metacarpals

The appearance of the shaft of the cow metatarsal vs metacarpal bones shows a remarkable variation. Here, the metatarsal bone present a four-sided shaft, whereas the metacarpal has dorso-ventrally (dorsal and palmar aspects) compressed shaft.

Thus, the cow metatarsal’s shaft possesses four distinct surfaces –

• Dorsal surface: This surface presents a deep longitudinal/vertical groove.
• Planter surface: it is almost flat and present shallow longitudinal median groove.
• Medial surface: it is smooth, flat, and wide above.
• Lateral surface: this surface is nearly flat and smooth.

But the cow metacarpal’s shaft possesses only two surfaces –

• Dorsal surface: this surface is convex and presents a shallow longitudinal/vertical groove.
• Palmar surface: the palmar (caudal) surface of metacarpals is nearly flat and smooth. It also presents a shallow longitudinal groove.

Thus, you may easily differentiate the cow’s metatarsal bones from the metacarpals with the features of a four-sided shaft.

Here, Figure 5 shows the shaft and its surfaces of the cow’s metatarsals and metacarpals.

Dorsal longitudinal groove on the metatarsal and metacarpal

The dorsal longitudinal groove on the cow’s metatarsal is deep and wide compared to the metacarpal bone. Here, the proximal foramen on the longitudinal groove appears in the metacarpal, but is absent in the cow’s metacarpal.

Again, the longitudinal groove on the plantar surface of the cow’s metatarsal is shallow, like the metacarpal bone. This longitudinal groove also lacks the proximal foramen.

Here, Figure 6 shows the deep and shallow dorsal longitudinal grooves from the cow’s metatarsal and metacarpal bones, respectively.

Location of the cow’s small metatarsal II and small metacarpal V

The cow’s small metatarsal is a small quadrilateral bone measuring about 2.5 centimeters. Whereas the cow’s small metacarpal is an ill-developed bone measuring about 4 – 5 centimeters.

Thus, the length of the cow’s metatarsal is less than that of the small metacarpal bone.

Again, you will find the variation in the location/ attachment of the small metatarsal or metacarpal with the large metatarsal or metacarpal.

Here, the cow’s small metatarsal (II) is located on the caudomedial aspect of the proximal extremity of large metatarsal III. You will find a small facet on its anterior face for articulation with the large metatarsal III bone.

However, the cow’s small metacarpal V is located at the proximal extremity of the lateral border of the large metacarpal IV.

Here, Figure 7 shows the location of the cow’s small metatarsal and small metacarpal bones with large metatarsal III and large metacarpal IV.

Another differentiating feature between the cow’s metatarsal and metacarpal

The osteological features from the proximal and distal extremities of the cow’s metatarsals are almost similar to those of the metacarpals. But a little variation may be found in the proximal medial facet and distal condyles of the cow’s metatarsals and metacarpals.

The medial facet on the proximal extremity of the cow’s metatarsal is larger than the metacarpals. But the appearance is oval and a little different than these of the metacarpal.

Again, the width of the lateral and medial condyles of the cow’s metatarsal is less than that of the metacarpal condyles. Similar differentiating osteological also found in the goat’s metatarsal and metacarpal bones (Sonnet et al., 2025).

Cow metatarsal vs metacarpal bone diagrams

Here, Figure 8 shows the different osteological features between the cow metatarsal and metacarpal bones. It presents all the similarities and dissimilarities of the cow’s metatarsal and metacarpal bones.

Conclusion

So, the cow metatarsal vs metacarpal presents the most important differentiating features in their shaft. The shaft is four-sided in the cow’s metatarsal and presents dorsal, plantar, lateral, and medial surfaces. Whereas, the cow’s metacarpal is compressed in the dorso-palmar aspect and presents convex dorsal and flat palmar surfaces.

Again, the appearance of the dorsal longitudinal grooves on both cow’s metatarsal and metacarpal is also unique. It is deeper and wider on the dorsal surface of the cow’s metatarsal than that of the metacarpal.

References

• Nacambo et al., Difference in the length of the medial and lateral metacarpal (MT) and metatarsal condyles in calves and cows-a post-mortem study. Anatomia, histologia, embryologia, 2007; 36(6), 408–412.
• Ghosh, R. K. : Primary veterinary anatomy, 2nd Edn.Current Books International, Kolkata.
• Rowen D. Frandson, W. Lee Wilke, and A. Dee: Anatomy and physiology of farm animals, 4th edn.Wiley-Blackwell, USA.
• Azarpajouh, S., Munita, M.P. & Calderón Díaz, J.A. Length of metacarpal and metatarsal bones in five Iranian sheep breeds and their associations with ungula measurements. BMC Vet Res 17, 376 (2021).
• Dyce, K. M., W. O. Sack and CSG Wensing : Text Book of Veterinary Anatomy, Lea & Febiger. Philadelphia
• Allouch and El-shambari, Comparative morphological study of the  metacarpal and metatarsal (MT) bones of the camel. Open Veterinary Journal, , 2022; 12 (5), 649-656.
• Nickel, R. Schummer, A. and Seiferle, E.: The anatomy of domestic animals, 1st Edn. Verlag Paul Parey, Berlin.
• Sonnet et al., Morphometric analysis of distal condyles and identification of right and left metacarpal bones from the goat. Journal of Research in Veterinary Sciences, 2025; 5 (3), 278-282.