bng-345: lecture 15 the shoulder anatomy disease final friday nov. 20, 8:30- 10:30 am
DESCRIPTION
The Shoulder Joint Ball and Socket Joint In shoulder region there are 3 joints: Glenohumeral Joint (GH) Sternoclavicular Joint (SC) Acromioclavicular joint (AC)TRANSCRIPT
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BNG-345: Lecture 15
The ShoulderAnatomyDisease
Final Friday Nov. 20, 8:30-10:30 AM
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Learning Objectives
Identify the bones of the shoulderIdentify the ligaments of the shoulderIdentify the muscles and their main functions
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The Shoulder JointBall and Socket JointIn shoulder region there are 3 joints:
Glenohumeral Joint (GH)Sternoclavicular Joint (SC)Acromioclavicular joint (AC)
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Bones of Shoulder Girdle
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Scapula
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Humerus
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Clavicle
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Glenohumeral JointComprised of the rounded medial anterior surface of the humerus and the glenoid fossa
The shallow surface of the GH joint and the connective tissue at the joint allows the arm a large degree of motion
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Sternoclavicular Joint
At the medial end of the clavicle and the manubrium, which is the top most portion of the sternum
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Acromioclavicular Joint
Where the acromial process of the scapula meets the clavicle
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Acromioclavicular Joint
Joint where the Acromiol process of scapula meets the clavicle
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LigamentsGlenoid Labrum
Fibrocartilage rim around the glenoid cavityDeepens the shallow cavityContributes little to joint stability
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MusclesThe deep muscle group that moves the shoulder are the rotator cuff muscles
primary function is to keep the head of the humerus in the glenoid fossahelp rotate the shoulder in many directions
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Muscles
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Bursa
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Osteoarthritis
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Learning Objectives
Identify the bones of the shoulderIdentify the ligaments of the shoulderIdentify the muscles and their main functions