Joints of Shoulder Region Flashcards
The GH joint has approximately a _____ degree angle of clination.
135
The articular surfaces of the humerus is __x larger than the area offered by the glenoid cavity.
3
What is the radius of the humeral head?
30mm
What is the labrum made up of?
fibrocartilage
What is the articular surface of the GH joint covered by?
hyaline cartilage
How many intrinsic ligaments of the GH joint are there?
3
What are the names of the intrinsic ligaments of the GH joint?
superior, middle and inferior band
In _____ percent of the population the synovial membrane becomes continuous with the underlying bursae, which may lead to issues with inflammation.
30
What is the main target of OA at the GH joint?
hyaline cartilage
The LH of biceps is ____capsular and ____synovial.
intra;extra
What is the test for bicipital tenosynovitis?
supination with arm at 90 degrees
There is no pure adduction at the GH joint (T/F)
True
Does medial or lateral rotation have more movement?
medial
What controls extension of the GH joint?
coracohumeral lig
What ligaments resist abduction of the GH joint?
GH ligaments
Does medial or lateral rotation stretch the GH ligaments more?
lateral
What type of joint is the AC joint?
synovial planar
How do the coraco-clavicular ligaments support AC joint?
By supporting clavicle
The coracoacromial ligaments does not provide support to the AC joint (T/F)
TRUE
What is the range of elevation and depression of the clavicle?
10cm;3 cm
What is the range of protraction and retraction of the clavicle?
10cm;3cm
What is the range of rotation of the clavicle?
30 degrees
What type of joint is the SC joint?
synovial saddle
What are the 3 intrinsic SC ligaments?
anterior, posterior and superior
The ________ ligament runs between the first rib and the clavicle.
costoclavicular
What is the intraarticular disc of the SC joint made up of?
fibrocartilage
When is axial rotation of the clavicle necessary?
when abducting past 90 degrees
What muscle assists in axial rotation of the clavicle?
subcalvius
What is the only synovial joint connecting the upper limb to torso?
SC joint
Where does the superior angle of the scapula sit?
2nd rib
where does the inferior angle of the scapula sit?
7th rib
What is the av. range of protraction and retraction at scapula?
15cm
What is the av. range of depression and elevation of the scapula ?
10-12cm
What is the av. range of rotation of the scapula?
60 degrees
There is a ratio of __:__ for moments of abduction and rotation at the scapula, which is known as _________ rhythm.
2:1; scapulothoracic
