MSK II FINAL Flashcards
(130 cards)
What is the most common cause of lateral elbow pain in individuals over 35 years old?
Lateral epicondylitis (tennis elbow).
What elbow injury is common in children under 5 years old and involves a radial head subluxation?
Nursemaid’s elbow.
What condition presents with insidious lateral elbow pain, locking, and decreased ROM in adolescents?
Osteochondritis dissecans.
What special test is used to assess medial (ulnar) collateral ligament integrity?
Valgus stress test at 20–30 degrees flexion.
A positive moving valgus stress test reproduces pain between what range of elbow flexion?
Between 70–120 degrees flexion.
What elbow injury involves axial compression, varus force, and external rotation leading to posterolateral rotatory instability?
Lateral (radial) collateral ligament (LCL) sprain.
What pathology would present with posterior elbow pain, catching, clicking, and is worsened by full extension?
Olecranon impingement syndrome.
Which elbow injury is associated with valgus extension overload in throwers?
Posterior elbow impingement.
What radiographic findings are associated with radiocapitellar chondromalacia?
Loss of joint space, marginal osteophytes, and possible loose bodies.
What is the expected end-feel for passive elbow flexion?
Soft-tissue approximation.
What is the expected end-feel for passive elbow extension?
Bony end-feel.
What are common differential diagnoses for medial elbow pain?
Medial epicondylitis, MCL sprain, ulnar nerve compression.
A patient has pain with axial load and supination-pronation at the radiocapitellar joint. What is a likely diagnosis?
Radiocapitellar chondromalacia.
What is a sign of significant elbow effusion seen on observation?
Loss of the elbow dimples.
What deformity results from a decreased carrying angle (<10 degrees)?
Cubitus varus (“gunstock deformity”).
What is the classic mechanism of injury for Nursemaid’s Elbow?
Sudden traction on an extended and pronated arm (radial head subluxation).
What symptom commonly indicates a radial head fracture?
Lateral elbow pain + inability to fully supinate/pronate.
What special test assesses ulnar nerve subluxation at the elbow?
Tinel’s sign over the ulnar groove.
What is the purpose of the “milking maneuver” special test?
Assesses medial (ulnar) collateral ligament integrity (valgus stress).
What pathology is characterized by crepitus, catching, locking, and lateral elbow pain during flexion and pronation-supination?
Radiocapitellar chondromalacia.
Loss of elbow extension with a springy end-feel should make you suspicious for what?
Intra-articular loose body.
Pain localized at the medial epicondyle worsened with resisted wrist flexion is most consistent with what diagnosis?
Medial epicondylitis (golfer’s elbow).
What nerve is most commonly injured with a medial elbow injury?
Ulnar nerve.
What exam finding is strongly suggestive of a loose body in the elbow joint?
Springy end-feel during extension.