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What is the significance of the lateral antebrachial cutaneous nerve in distal bicep surgery?
Press to flip
It is a branch of the musculocutaneous nerve that is prone to injury during the procedure.
How is postrolateral rotatory instability diagnosed?
Through the pivot shift test involving axial load, supination, and valgus stress.
Identify the structures found in the cubital fossa.
The cubital fossa contains the pronator teres, brachioradialis, biceps muscle along with the radial nerve, brachial artery, and median nerve.
What is the role of the lateral ulnar collateral ligament in elbow stability?
It prevents post-trilateral instability and acts as a sling for the radial head, arising from the lateral humeral epicondyle and inserting into the crista supinatoris of the proximal ulna.
What are the components of the lateral collateral ligament complex?
The lateral ulnar collateral ligament, lateral radial collateral ligament, accessory lateral collateral ligament, and annular ligament.
Which muscles originate from the medial epicondyle of the elbow?
Pronator teres and the flexor muscles.
What are the names of the two epicondyles located at the lower end of the humerus?
Lateral and medial epicondyles
Which anatomical feature is a key anterior stabilizer of the elbow joint?
The unhumeral joint
What is the function of the radial recurrent arteries in relation to the biceps?
They are located above the biceps and supply blood to this area.
What structure houses the ulnar nerve, and where is it located?
The cubital tunnel, located on the medial side of the elbow.
Which ligament is considered the strongest stabilizer during valgus stress at 90° elbow flexion?
The anterior band of the Ulnar Collateral Ligament (MCL)
Name the tendons that make up the common extensor tendon on the lateral side of the elbow.
Extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, and extensor carpi ulnaris.
Describe the function of the coronoid process in elbow joint stability.
The coronoid process provides an anterior buttress to prevent posterior dislocation of the elbow. Fractures involving more than 50% of its height can lead to instability.
Which imaging technique is best for diagnosing MCL tears?
MRI
Explain the relationship between the triceps muscle and the posterior elbow.
The triceps muscle and tendon are key structures on the posterior side of the elbow.
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