Uploaded June 2025 | Updated September 2026, 2 weeks ago

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Content:
00:00 Introduction & Content
01:20 Clavicle Anatomy
03:02 Joints of the Clavicle
03:19 Sternoclavicular Joint
04:06 Acromioclavicular Joint
05:29 Why do we have a Clavicle?
07:47 Clinical Relevance
08:42 Possible causes of pain in the Clavicle
09:53 Symptoms of Clavicle Injury
10:17 Clinical Tests of Clavicle Injuries
11:01 Treatment of Clavicle Injury

Clavicle (Collarbone) Anatomy | Structure, Joints & Clinical Relevance

Structures covered in this video:

Clavicle Anatomy – Parts:
• Sternal end (Extremitas sternalis)
• Acromial end (Extremitas acromialis)
• Body of the clavicle (Corpus claviculae)
• Sternal facet (Facies articularis sternalis)
• Acromial facet (Facies articularis acromialis)
• Subclavian groove (Sulcus musculi subclavii)
• Conoid tubercle (Tuberculum conoideum)
• Trapezoid line (Linea trapezoidea)
• Impression for costoclavicular ligament

Joints Formed by the Clavicle:
• Sternoclavicular joint (Articulatio sternoclavicularis)
 • Clavicular notch of manubrium (Incisura clavicularis)
• Acromioclavicular joint (Articulatio acromioclavicularis)

Ligaments of the Clavicle:
• Costoclavicular ligament (Ligamentum costoclaviculare)
• Interclavicular ligament (Ligamentum interclaviculare)
• Anterior sternoclavicular ligament
• Acromioclavicular ligament
• Coracoclavicular ligament
 • Conoid ligament (Ligamentum conoideum)
 • Trapezoid ligament (Ligamentum trapezoideum)
• Coracoacromial ligament (Ligamentum coracoacromiale)

Associated Muscles:
• Subclavius
• Pectoralis major
• Sternocleidomastoid
• Trapezius
• Deltoid

Neurovascular Structures Protected by the Clavicle:
• Brachial plexus
• Subclavian artery
• Subclavian vein

Functional Anatomy:
• Clavicle as a strut
• Force transmission from upper limb to axial skeleton
• S-shape acting as a shock absorber
• Scapular suspension and positioning

Clinical Anatomy and Conditions Discussed:
• Clavicle fracture (Middle third most common)
• Clavicle dislocation
• Acromioclavicular joint injury
 • AC joint step-off
 • Cross-body adduction test
 • Piano key sign
 • O'Brien’s test
• Sternoclavicular joint dislocation or arthritis
• Distal clavicular osteolysis (Weightlifter’s shoulder)
• Cleidocranial dysplasia (Absence of clavicle)
• Neurovascular injury signs (Pulse, cap refill, sensory loss)

Imaging Techniques Mentioned:
• AP clavicle X-ray
• CT scan for subtle fractures or joint evaluation
• MRI for osteolysis or soft tissue pathology
• Chest X-ray to rule out associated rib fractures or pneumothorax

Treatment Options:
• Conservative management (sling, NSAIDs, physiotherapy)
• Surgical fixation (for displaced or unstable fractures)
• Grading of AC joint injuries (Type I–III)
• Distal clavicle excision (arthroscopic or open)

Sources:
• Kozlowski, T. (2017). Memorix Anatomy, 2nd ed.
• Standring S. (2020). Gray’s Anatomy, 42nd edition
• Tubbs RS, Shoja MM, Loukas M. (2016). Bergman’s Encyclopedia of Human Anatomic Variation
• White TD, Folkens PA. (2005). The Human Bone Manual

Programs used: Complete Anatomy, Biorender, PowerPoint