Elbow Anatomy and Injuries

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Elbow Anatomy and Injuries

• PED 477
• Spring 2009

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Elbow Anatomy - bones

• Humerus
• medial epicondyle
• lateral epicondyle
• Radius
• Ulna
• Olecranon

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Elbow Anatomy - joint

• Humeroulnar
• Stable hinge
• Similar to knee

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Elbow Anatomy - Ligaments

• LCL
• Ulna and radius to humerus
• MCL
• Ulna to humerus

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Ligamentous Structures

• Stabilizing ligaments
• 1. Radial collateral

LCL
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Ligamentous Structures

• Ulnar collateral

MCL
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Elbow Anatomy - muscles

• Flexors (3 Bs)
• Biceps
• long (bicipital groove) and short head (coracoid)
• Brachioradialis
• Brachialis
• Extensors
• Triceps
• Anconeus

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Elbow Flexors
Biceps Brachii
P long head - supraglenoid tubercle short
head - coracoid process D radial tuberosity A
elbow flexion forearm supination
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Elbow Flexors
Brachialis
P Anterior surface of distal humerus D
ulnar tuberosity A elbow flexion
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Elbow Flexors
Brachioradialis
P lateral supracondylar ridge of
humerus D radial styloid process A elbow
flexion
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Elbow Extenders
Triceps brachii
P long head - infraglenoid tubercle lateral
- posterior humerus medial - posterior
humerus D olecranon process A elbow extension
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Elbow Pathology

• Tendonitis (epicondylitis)
• Medial (golfers elbow)
• flexor mass
• Lateral (tennis elbow)
• extensor mass
• Grip size
• Pressure point

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Elbow Pathology

• Sprains
• Capsular
• MCL/LCL
• Dislocations
• Rare due to stability
• Almost always posterior
• Bursitis
• Result of direct trauma
• Pad and protect

• Fracture/disocation