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Joints anatomy of shoulder girdle


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Joints anatomy of shoulder girdle


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Gentle Tiglon


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[Front]


what are ligaments in sterrnoclavicular joint?
what are ligaments in sterrnoclavicular joint?
[Back]


1anterior and posterior sternoclavicular lig. 2-interclavicular lig. 3-costoclavicular lig.

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Joints anatomy of shoulder girdle - Details

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What are ligaments in sterrnoclavicular joint?
1anterior and posterior sternoclavicular lig. 2-interclavicular lig. 3-costoclavicular lig.
What is the articulation of anterior and posterior sternoclavicular lig?
Articulates each clavicle with upper part of manubrium
What is the articulation of costoclavicular lig?
Links costal cartilage of the first rib with clavicle
What is the articulation of interclavicular lig?
Links two clavicles with each other by upper surface of manubrium.
What is the portions of acromioclavicular joint?
1-distal part of clavicle 2-acromion process of scapula
What helps the movement of AC joint?
Thick layer of cartilage called meniscus.
What are the ligaments of acromioclavicular joint?
1-Acromioclavicular ligament 2-Coracoclavicular ligament.
What is the articulation of acromioclavicular ligaament?
It articulates clavicle to the acromion process of scapula
What is the divisions of coracoclavicular ligament?
1-conoid ligament 2-trapezoid ligament
What is the articulation of coracoclavicular ligament?
It articulates clavicle with the coracoid process of scapula
What is the articulation of glenohumeral joint(shoulder joint)?
It articulates head of humerus and glenoid cavity of scapula.
What is the type of shoulder joint?
Synovial ball and socket joint
What is the action of shoulder joint?
The most movable joint ,it acts as multi axial(adduction,abduction,external and internal rotation,circumduction)
What is the movement that scapula done by shoulder joint?
Protraction, retraction, elevation, and depression
Why glenohumeral joint is unstable joint?
Because the of huemerus is larger than glenoid cavity
What makes the stability of shoulder joint?
Rotator cuff muscles, tendons, ligaments, and the Glenoid labrum.
What are the ligaments of glenohumeral joint?
1-glenohumeral ligament(superior, middle inferior) 2-coracohumeral ligament 3-transverse hemeral ligament
What is the articulation of glenohumeral ligament?
Articulates glenoid cavity with the head of humeras
What is the function of transvers ligament?
Strengthens the capsule and bridges the gap between the two tuberosities in hemerus.
What is the function of coracohumeral joint and from where it extends?
Strengthens the capsule above and stretches from the root of the coracoid process to the greater tuberosity of the humerus.
What is the glenoid labrum?
Is a fibrocartilaginous rim attached around the margin of the glenoid cavity in the scapula.
What is the function of glenoid labrum?
It deepens the articular cavity and protects the edges of the bone.
What is the capsule that covers shoulder joint?
Is a thin and lax structure surrounds the joint.
What is the articulation of capsule?
Medially to the margin of the glenoid cavity outside the labrum, laterally it is attached to the anatomic neck of the humerus
What is the function of capsule?
Allowing a wide range of movement for joint.
What strengths capsule?
Fibrous slips from the tendons of the rotator cuff muscles.
What is the function of synovial membrane?
Lines the capsule, attached to the margins of the cartilage covering the articular surfaces and it forms a tubular sheath around the tendon of the long head of the biceps brachii.
What is the extension of synovial membrane?
It extends through the anterior wall of the capsule to form the subscapularis bursa beneath the subscapularis muscle.