1. The head of radius –
The head of the radius is at the top
of the radius bone and below the elbow. The head of radius is
cylindrical, with a concave articulating surface like a shallow cup
that articulates with the capitellum of the humerus.
2. Glenoid cavity – the head of
Glenoid cavity or glenoid fossa is a
shallow cavity on a bone into which another bone fits to form a
joint. The border of the scapula, glenoid cavity articulates with
the head of the humerus to form a shoulder joint.
3. Manubrium – sternal end of
Manubrium is the superior portion of
the sternum and forms a sternal angle. The sternum consists of
manubrium, body, and xiphoid process.
4. Radial notch of ulna – the head
The radial notch is a narrow oblong
depression of ulna that articulates with the head of the radius to
form a joint called pivotal joint.
5. Ulnar notch of radius – the head
The ulnar notch or sigmoid cavity
articulated with the head of ulna.
6. Olecranon fossa of humerus –
Olecranon process of ulna
The olecranon fossa, the posterior
surface of the condyle is the triangular depression on the
posterior surface of the distal humerus.