UE Arthrology Flashcards
What is the sternoclavicular joint?
Sellar/saddle synovial joint between the clavicular notch of the manubrium and sternal facet on the sternal end of the clavicle
Which ligaments hold the sternoclavicular joint together?
Costoclavicular L, anterior and posterior sternoclavicular L, and interclavicular L
What is the acromioclavicular joint?
Planar synovial joint between the acromial facet on the acromial end of the clavicle and the facet on the acromion of the scapula
Which ligaments are responsible for holding the acromioclavicular joint together?
Acromioclavicular L and coracoclavicular L (composed of trapezoid and conoid Ls)
What is the acromioclavicular joint susceptible to?
Injury and separation often referred to as shoulder separation and is capable of separating with or without rupture of the coracoclavicular L
What is the glenohumeral joint?
Spheroidal synovial joint between the glenoid cavity of the scapular head which is deepened and supported by the glenoid labrum and the head of the humerus
The articular capsule of the glenohumeral joint is open in two places to allow the passage of what?
The long head of the biceps T and communication with the subscapular bursa
Which bursa are present in the glenohumeral joint?
Subscapular and subacromial bursa
Which ligaments hold the glenohumeral joint together?
Glenohumeral L, coracohumeral L, transverse humeral L, coracoacromial arch
Describe the coracoacromial arch
Osseoligamentous arch preventing superior displacement of the humerus from the glenoid cavity
Includes the coracoacromial L
What is the glenohumeral joint susceptible to?
Dislocation due to its mobility and relative instability
Due to the presence of coracoacromial arch dislocation of the glenohumeral joint most commonly occurs anterior or inferiorly
What is the elbow joint?
Ginglymus/hinge synovial joint between the humeral condyle, the trochlear notch of the ulna and head of the radius
What is the humeroulnar joint?
Trochlear notch of ulna wrapping around humeral trochlea
Held together by the ulnar collateral L (made of 3 bands)
What is the humeroradial joint?
Humeral capitulum articulating with the fovea of the radial head
Held together with the radial collateral L (fan shaped)
What is the elbow capable of?
Being dislocated posteriorly in response to force transmitted along the long axis of the forearm
Usually involves a tear in the ulnar collateral L
What are the two common bursa of the elbow to become inflamed?
Subcutaneous bursa of the olecranon bursa and the bicipitoradial bursa