Transcript The Shoulder

BNG-345: Lecture 15
The Shoulder
Anatomy
Disease
Final Friday
Nov. 20, 8:3010:30 AM
Learning Objectives
Identify the bones of the shoulder
Identify the ligaments of the shoulder
Identify the muscles and their main
functions
The Shoulder Joint
Ball and Socket Joint
In shoulder region there
are 3 joints:
Glenohumeral Joint
(GH)
Sternoclavicular
Joint (SC)
Acromioclavicular
joint (AC)
Bones of Shoulder
Girdle
Scapula
Humerus
Clavicle
Glenohumeral Joint
Comprised 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
Sternoclavicular Joint
At the medial end of
the clavicle and the
manubrium, which is
the top most portion of
the sternum
Acromioclavicular
Joint
Where the acromial
process of the scapula
meets the clavicle
Acromioclavicular
Joint
Joint where the
Acromiol process of
scapula meets the
clavicle
Ligaments
Glenoid Labrum
Fibrocartilage rim
around the glenoid
cavity
Deepens the
shallow cavity
Contributes little to
joint stability
Muscles
The 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 fossa
help rotate the
shoulder in many
directions
Muscles
Bursa
Osteoarthritis
Learning Objectives
Identify the bones of the shoulder
Identify the ligaments of the shoulder
Identify the muscles and their main
functions