What are the boundaries and contents of the cubital fossa?
Being triangular, the cubital fossa has three borders: Superior (base) – an imaginary line between the medial and lateral epicondyles of the humerus. Medial – the lateral boundary of the pronator teres. Lateral – the medial border of the brachioradialis.
Does the median nerve run through the cubital fossa?
The median nerve descends into the cubital fossa, where it lies deep to the bicipital aponeurosis and median cubital vein. The median nerve has no branches in the axilla or arm, but it does supply articular branches to the elbow joint.
What are the borders of the cubital tunnel?
The cubital tunnel is a space of the dorsal medial elbow which allows passage of the ulnar nerve around the elbow. It is bordered medially by the medial epicondyle of the humerus, laterally by the olecranon process of the ulna and the tendinous arch joining the humeral and ulnar heads of the flexor carpi ulnaris.
What separates the median cubital vein from the median nerve?
It was separated from the nerve only by the thin antebrachial fascia. The medial cutaneous nerve of the forearm crossed those veins anteriorly, just at the point where the vein opened into the basilic vein.
What forms the superior boundary of the cubital fossa?
The superior border – also known as the base – of the cubital fossa, is formed by an imaginary line that runs from the medial epicondyle of the humerus (bone of arm) to the lateral epicondyle of the humerus.
Is ulnar nerve in cubital fossa?
The ulnar nerve is also in the area, but is not in the cubital fossa; it occupies a groove on the posterior aspect of the medial epicondyle of the humerus.
Why injury to the radial nerve in the cubital fossa will not cause wrist drop?
Because of the radial nerve’s innervation of the extensor muscles of the wrist and digits, those whose radial nerve function has been compromised cannot actively extend them. As such, the hand hangs flaccidly in a position of flexion when the patient attempts to bring the arm to a horizontal position.
What happens if the ulnar nerve is damaged?
The ulnar nerve is what creates the shock-like sensation when you hit the funny bone in your elbow. You may lose sensation and have muscle weakness in your hand if you damage your ulnar nerve. This is known as ulnar nerve palsy or ulnar neuropathy.
What is the cubital fossa?
The cubital fossa is an area of transition between the anatomical arm and the forearm. It is located in a depression on the anterior surface of the elbow joint. It is also called the antecubital fossa because it lies anteriorly to the elbow (Latin cubitus) when in standard anatomical position.
What is cubital fossa Mnemonic?
A useful mnemonic to remember the contents of the cubital fossa is, from medial to lateral: My Brother Throws Rad Parties.