Elbow Pathology Flashcards
What are the concave/convex components of the HumeroUlnar Joint?
Concave: trochlear notch of the ulna
Convex: trochlea of humerus
Which joint has a carrying angle + norms?
The HU joint: 11-14 men, 13-16 women
What is the resting position of the HU joint?
70 degrees elbow flexion, 10 degrees of supination
What is the closed pack position of the HU joint?
full elbow extension and supination
What is the capsular pattern of the HU joint?
flexion, extension
What are the concave/convex partners of the HumeroRadial joint?
Concave: head of the radius
Convex: Capitulum of the humerus
What is the resting position of the HR joint?
full elbow extension and supination
What is the closed pack position of the HR joint
Elbow flexed to 90 deg and supinated to 5 deg
What are the concave/convex partners of the proximal radioulnar joint
Concave: ulna
Convex: head of the radius
What is the resting position of the proximal RU jont
70 deg flexion 35 deg supination
What is the closed pack position of the proximal RU joint
5 deg supination
What is the capsular pattern of the prox. RU joint
pronation and supination equally limited
What are the medial ligaments of the elbow?
Ulnar Collateral Ligament w/anterior, transverse, and posterior bundle
Which bundle of the UCL is the primary restraint against valgus stress?
Anterior bundle
What are the lateral ligaments of the elbow?
Annular ligament
Lateral Radial Collateral Ligament
Lateral Ulnar Collateral ligament
Which lateral ligament wraps around the radial head?
Annular ligament
Which lateral ligament is associated w/ECRB and supinator
Lateral Radial collateral ligament
What are the primary flexors of the elbow?
Biceps, bracialis, bracioradialis
What are the weak flexors of the elbow?
PT
FCR
FCU
ECRL
What are the extensors of the elbow?
Triceps and anconeus
Where is the common extensor/supinator insertion?
Lateral epicondyle
Where is the common flexor/pronator insertion?
Medial epicondyle
List some pathologies that can occur at the lateral elbow
Lateral epicondylitis
Posterior interosseous nerve syndrome
Radial Tunnel Syndrome
Osteochondritis dissecans
panners disease
Osteochondral degenerative changes
Lateral collateral ligament injury
Synovitis & bursitis
Capitellum fracture
Radial head fracture
Cervical origin (C6-7)
What is the mechanism of injury for Lateral Epicondylitis
Overuse/insidious onset from manual labor actiities (could be due to a repetitive microtrauma)