Comparative anatomy of the Radius and ulna

Radius
While in the human the radius and ulna are separated by an interosseus space and articulate only at their extremities, allowing for significant capability of supination and pronation, these movements are much more limited in domestic animals due to the gradual fusing of the two bones. The extreme case is exhibited by the horse.

The radius forms the shaft-like rod of the distal limb, which is bowed to varying degrees amongst species. It articulates proximally with the distal humerus, caudally with the ulna, and distally with the carpus. Medially on the distal articular process, a styloid process projects, which is mirrored laterally by the ulna.

Ulna
The Ulna's greatest contribution to functional anatomy is in the formation of the olecranon, or the point of the elbow, which gives rise to the attachment of the triceps muscle. The olecranon articulates with the humerus via its anconeal process. The olecranon develops as an apophysis, i.e.. from a separate site of ossification. The trochlear notch on the cranial aspect of the ulna articulates with the large trochlea of the humerus which forms the main elbow joint capable of flexion and extension. Just distal to the trochlear notch, a large medial coronoid process and a smaller lateral coronoid process can be seen. Distally (where unfused), the lateral styloid process articulates with the ulnar carpal bone.

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[vbNasreenFatima]

Thanks for uploading vet lecture videos...it's really hard to find vet lecture... thank u so much .... Plz upload more.. we really need it🙏🙏🙏

[alara]

Thank you so much for the very informative video please keep making

[mohamudmohamed]

It was really very informative and interesting anatomy lessons, Please a video on carpal, tarsal, metacarpal, metatarsal and phalanges of ox, goat and sheep.
Thanks

[asmaahassan]

Great and interesting explanation, you make it very easy and fun to know more ..thank you so much

[saraalneyadi]

smooth explanation, you make this seem very easy dr😁

[Harryjainhari]

Thank you sir iam so numb about anatomy while I listening your class I really gratified the way of your explanation now I am enjoying anatomy with listing your class

[EkamdeepKaur-tdmc]

It was really v. Informative, , plz make a video on carpal and metacarpal bones too..

[BennaCaique]

Thank you for doing such great videos! Extremely appreciated😇

[abdullahsherief]

sir your vedios are so helpful .thankyou for the greate works.

[ismitabaduwal]

Thank you so much sir for such a informative video❤️

[vikramjeetsingh]

Thank you sir, this video was very helpful!

[basantikafle]

Thank you Sir!
For sharing lecture it becomes knowledge and helpful plz share pdf of it also if possible

[usamiakahiko]

Thank you doctor you help me so much I hope I can be like you and I can describe every each bone clearly 😍✨🌹

[samilikewow]

Plz upload video of carpals and metacarpals

[albraaayman]

Please, what is the name of the program you are working on?

[ramyasris]

Sir medial and lateral is soo confusing what to do

[w_zk]

thanks doctor please i want a sesamoid bones from you🥺💔

[iloveindia]

Sir i have no rotation in my hand 13 years old fracture.also high pain some times the head of ulna and radius are fuse together. Can I get my hand to rotation by surgery ???iam now 26 old ..