QCM : Elbow Pathologies and Examination Techniques — 9 questions

Explication

Radial tunnel syndrome involves compression of the posterior interosseous nerve (PIN), a branch of the radial nerve, as it passes through the radial tunnel. This nerve is responsible for motor innervation to some forearm extensor muscles, and its compression causes pain without motor deficits, distinguishing it from other nerve entrapments.

Explication

Lateral epicondylitis predominantly involves degeneration of the extensor tendons, especially the extensor carpi radialis brevis, at the lateral epicondyle, which is often caused by overuse or repetitive stress.

Explication

The primary role of clinical history assessment is to gather detailed information about the patient's symptoms, onset, and related factors, which helps guide the diagnosis and subsequent management.

Explication

Cozen's test, which involves resisted wrist extension, is frequently used to provoke lateral epicondylitis symptoms, confirming tendinopathy of the extensor tendons.

Explication

A musculoskeletal examination is a comprehensive clinical assessment that combines patient history, visual inspection, palpation, range of motion testing, and special tests to diagnose joint, tendon, ligament, or nerve pathology.

Explication

Radial tunnel syndrome is a compressive neuropathy of the posterior interosseous nerve (PIN), causing pain without causing motor weakness or sensory deficits, because it is a purely motor nerve.

Explication

Lateral collateral ligament injuries compromise lateral elbow stability, often leading to instability, subluxation, or dislocation, especially during varus stress.

Explication

Features like joint locking, swelling, and instability during physical assessment help identify intra-articular pathology such as loose bodies or cartilage lesions.

Explication

MRI provides detailed images of soft tissues, making it ideal for diagnosing tendinopathy, ligament injuries, and nerve entrapment around the elbow.