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Mechanism of injury most associated with clavicle fracture
Fall on outstretched hand
Surface that lies against ribs
What is the costal surface (subscapular fossa)?
Most common fracture site of proximal humerus
What is the surgical neck?
Structure separating greater & lesser tubercles
What is the intertubercular sulcus (bicipital groove)?
Bone transmitting weight to axial skeleton
What is the clavicle?
Why the clavicle protects neurovascular structures
What is that it acts as a strut holding the shoulder laterally, preventing compression of subclavian vessels and brachial plexus?
Landmark dividing supraspinous & infraspinous fossae
What is the spine of the scapula?
Structure at risk in midshaft fracture
What is the radial nerve?
Surface containing deltoid tuberosity
What is the anterolateral surface of the humerus?
Bone forming glenohumeral joint socket
What is the scapula?
Reason fracture commonly occurs at medial 2/3 & lateral 1/3 junction
What is a structural weak point where curvature changes and forces are transmitted?
Structure lateral to suprascapular notch
What is the coracoid process?
Region commonly fractured in children
What is the supracondylar region?
Fossa receiving olecranon during extension
What is the olecranon fossa?
Bone forming glenohumeral joint head
What is the humerus?
Functional consequence of clavicle fracture on shoulder movement
What is drooping of the shoulder with limited abduction of the arm?
Attachment site above glenoid cavity
What is the supraglenoid tubercle?
Clinical importance of poor blood supply at upper-middle junction
What is risk of delayed healing or avascular necrosis?
Surface shape difference between upper & lower shaft
What is upper half rounded and lower half triangular?
Structures forming elbow articulation
What are the trochlea and capitulum?
Developmental significance of clavicle being first bone to ossify
What is that it undergoes early intramembranous ossification and plays a key role in early upper limb support?
Feature indicating dorsal surface
What is the convex surface containing the spine of the scapula?
Why medial epicondyle prominence matters clinically
What is increased vulnerability of the ulnar nerve?
Directional description of humeral head (3 directions)
What is medially, backward, and upward?
Relationship between capitulum and radial head
What is that the capitulum articulates with the head of the radius?