Orthopaedics Flashcards
Which nerve is most likely to be damaged during a mid-shaft humeral fracture?
Radial nerve.
From which cord of the brachial plexus is the radial nerve formed?
Posterior cord.
The radial nerve runs deep with which artery?
Brachial artery.
The radial nerve and brachial artery lie where in the humeral shaft?
Within the spiral groove.
How is radial nerve sensory function tested?
Testing sensory integrity within the first dorsal webspace of the hand.
How is motor function of the radial nerve tested?
Testing extension of the wrist against resistance.
Which nerve passes medially to the radial nerve?
Ulnar nerve.
Fractures at the surgical neck of the humerus is most likely to cause damage to which nerve?
Axillary nerve.
The median nerve is formed by which cords of the brachial plexus?
Medial and lateral cords of the brachial plexus in the lower axillary region.
In the cubital fossa, the median nerve lies where in relation to the brachial artery?
In the cubital fossa, the median nerve lies medial to the brachial artery.
Where does the musculocutaneous nerve arise in the upper arm?
Posterior to pec minor, it then runs laterally to the axillary artery.
The musculocutaneous nerve runs between which two muscles on the undersurface of the biceps?
- Brachialis.
- Biceps brachii.
The musculocutaneous nerve terminates as which nerve of the forearm?
Lateral cutaneous nerve of the forearm.
Musculocutaneous nerve passes between the heads of which muscle?
Corachobrachialis.
A fracture of the surgical neck of the humerus is most likely to injure which artery?
The posterior humeral circumflex artery.
Also anterior humeral circumflex and axillary
