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Flashcards in Bones of the Upper Limb Deck (6)
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0
Q

Which bone of the forearm articulates with the humerus?

A

Ulna

1
Q

Describe the membrane which attaches the radius and ulna.

When is it tense or relaxed?

A

Interosseus membrane. Fibrous connective tissue

Tense in pronation, relaxed in supination

3
Q

Describe articulation of the ulna.

A

On extension of the forearm, moves into the olecranon fossa on the posterior of the humerus.

4
Q

What two bones does the clavicle articulate with?

A

Sternum and acromium

5
Q

You have done an x-ray on a patient complaining of shoulder pain on articulation. The gap between the glenoid cavity and the head of the humerus appears smaller than usual. Why?

A

The patient has arthritis.

The gap is smaller due to the loss of hyaline cartilage in the joint.

6
Q

State the bones of the hand, from lateral to medial and proximal to distal.

A

Scaphoid, lunate, triquetrium, pisiform, trapezium, trapezioid, capitate, hamate