The elbow joint is formed by three bones: the humerus, radius, and ulna. The head of the radius attaches to the humerus via the capitullum, while the lower part of the ulna attaches via the trochlear notch. The radius also attaches to the ulna at the radial notch. The wrist joint is formed by the radius connecting to wrist bones, not the ulna bone. The two long bones of the forearm are the radius and ulna.

1. Elbow joint , radius and ulna
bone.
•Presented by - vikash yadav.
Guided by - Rahimi.A.V. sir.

2. Elbow joint
• This joint is very useful for making
connection betweenforearm, arm and hand.
•This elbow joint is made up of three bones
and ligaments -
• 1. Humerus.
• 2. Radius.
• 3. Ulna.

3. Elbow joint
• Head of Radius is attached to humerus
by the capitullum part.
•Lower part of ulna joint which we called
trochlear notch joins with the trochlear
part of humerus.
• Radius is also joins with ulna at radial
notch.

4. Anterior part of elbow joint
•

5. Posterior view of elbow joint

6. Radius bone

7. Anterior view of radius

8. Posterior view of radius

9. Upper and lower end of radius
and shaft region.
• Upper end :-having disc shaped head covered with
hyaline cartilage.
• Neck :-radial tuberosity is present just below to
neck to medial side. Its posterior part is rough and
anterior part is smooth.
• Shaft :-have three borders and three surfaces.
• 3borders :- anterior , posterior , interosseous
borders.
• 3 surfaces :- anterior , posterior , lateral surface.

10. How to identify whether it bone of right and
left hand

11. Ulna bone
• The ulna is a long bone found in the forearm that stretches
from the elbow to the smallest finger, and when in anatomical
position, is found on the medial side of the forearm. It is
broader close to the elbow, and narrows as it approaches the
wrist.
• Close to the elbow, the ulna has a bony process, the olecranon
process, a hook-like structure that fits into the olecranon fossa
of the humerus. This prevents hyperextension and forms a
hinge joint with the trochlea of the humerus. There is also a
radial notch for the head of the radius, and the ulnar
tuberosity to which muscles attach.
• Close to the wrist, the ulna has a styloid process.

12. Anterior view of ulna

13. How can we determine that it is
right hand ulna or left hand ulna

14. Wrist joint
• This joint is also formed by radius and
wrist bones not the ulna bone.
• Inferior surface bears triangular area
for scaphoid bone and medial
quadrangular area for lunate.

15. Wrist joint

16. My question
• Which bones formed elbow joint.
• Which bones are form wrist joint.
• Name the bones of forearm.

17. Thanks