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Title: Gross Anatomy of Clavicle
Description: its a easy and best way to memorise clavicle's gross anatomy
Description: its a easy and best way to memorise clavicle's gross anatomy
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ZeSurge Medical Book Series
Human Gross Anatomy
UPPER LIMB
Made by : Dr Rana Muhammad Zeeshan
Contact us : www
...
com/ZeSurge3687
CLAVICLE
Main Features:1
...
3
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5
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Only long bone that lies horizontally
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First bone to start ossify
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No medullary cavity
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Side Determination:1
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2
...
3
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Sex Determination:1
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Made by : Dr Rana Muhammad Zeeshan
Contact us : www
...
com/ZeSurge3687
2
...
Gross Feature and Attachments:Clavicle is divided into two main parts according to morphology
1
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2
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Ends
Two ends are present named as Medial End and Lateral end
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Also called sternal end
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Is quadrangular in shape
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Articulates with the clavicular notch of the manubrium sternii to form the
sternoclavicular joint
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Also articulates with first costal cartilage
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Fibrous capsule all round of sternoclavicular joint
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Articular disc attached posterosuperiorly
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Interclavicular ligament superiorly
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Also called acromial end
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Flattened from above downward
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Facet present of scapula to from the acromioclavicular joint
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Joint capsule of acromioclavicular ligament
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Flattened from above downward
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Has two borders anterior and posterior
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Has two surfaces superior and inferior
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Anterior border is concave forward
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Posterior border is convex backward
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Anterior border gives origin to deltoid
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Posterior border gives insertion to trapezius
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Superior surface is subcutaneous
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Inferior surface present an elevation conoid tubercle and ridge trapezoid ridge
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Conoid tubercle and trapezoid ridge give attachment to conoid and trapezoid part of
coracoclaricular ligament
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Round in shape
2
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Surfaces:1
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3
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Anterior surface is convex forward
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Superior surface is rough in its medial part
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5
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Attachment:1
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3
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Anterior surface gives origin to pectoralis major
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Oval impression an inferior surface give attachment to costoclavicular ligament
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Nutrient Artery:Branch of suprascapular artery (branch of thyro-cervical trunk)
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2 centers in shaft
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Appear at 5th-6th week and fuse on 45th day
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1 centre at medial end
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Appear during 15th-17th years and fuse during 21-22 years
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Are often caused by an indirect force transmitted from an
outstretched hand through the bones of the forearm and arm to
the shoulder during a fall
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The weakest part of the clavicle is the junction of its middle and
lateral thirds
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Made by : Dr Rana Muhammad Zeeshan
Contact us : www
...
com/ZeSurge3687
The trapezius muscle is unable to hold the lateral fragment up
owing to the weight of the upper limb; thus, the shoulder drops
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The lateral fragment of the clavicle may be pulled medially by the
adductor muscles of the arm, such as the pectoralis major
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A fracture of the clavicle is often incomplete in younger children
...
Made by : Dr Rana Muhammad Zeeshan
Contact us : www
...
com/ZeSurge3687
Title: Gross Anatomy of Clavicle
Description: its a easy and best way to memorise clavicle's gross anatomy
Description: its a easy and best way to memorise clavicle's gross anatomy