UE Arthrology Flashcards

1
Q

What is the sternoclavicular joint?

A

Sellar/saddle synovial joint between the clavicular notch of the manubrium and sternal facet on the sternal end of the clavicle

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2
Q

Which ligaments hold the sternoclavicular joint together?

A

Costoclavicular L, anterior and posterior sternoclavicular L, and interclavicular L

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3
Q

What is the acromioclavicular joint?

A

Planar synovial joint between the acromial facet on the acromial end of the clavicle and the facet on the acromion of the scapula

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4
Q

Which ligaments are responsible for holding the acromioclavicular joint together?

A

Acromioclavicular L and coracoclavicular L (composed of trapezoid and conoid Ls)

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5
Q

What is the acromioclavicular joint susceptible to?

A

Injury and separation often referred to as shoulder separation and is capable of separating with or without rupture of the coracoclavicular L

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6
Q

What is the glenohumeral joint?

A

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

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7
Q

The articular capsule of the glenohumeral joint is open in two places to allow the passage of what?

A

The long head of the biceps T and communication with the subscapular bursa

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8
Q

Which bursa are present in the glenohumeral joint?

A

Subscapular and subacromial bursa

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9
Q

Which ligaments hold the glenohumeral joint together?

A

Glenohumeral L, coracohumeral L, transverse humeral L, coracoacromial arch

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10
Q

Describe the coracoacromial arch

A

Osseoligamentous arch preventing superior displacement of the humerus from the glenoid cavity
Includes the coracoacromial L

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11
Q

What is the glenohumeral joint susceptible to?

A

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

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12
Q

What is the elbow joint?

A

Ginglymus/hinge synovial joint between the humeral condyle, the trochlear notch of the ulna and head of the radius

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13
Q

What is the humeroulnar joint?

A

Trochlear notch of ulna wrapping around humeral trochlea

Held together by the ulnar collateral L (made of 3 bands)

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14
Q

What is the humeroradial joint?

A

Humeral capitulum articulating with the fovea of the radial head
Held together with the radial collateral L (fan shaped)

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15
Q

What is the elbow capable of?

A

Being dislocated posteriorly in response to force transmitted along the long axis of the forearm
Usually involves a tear in the ulnar collateral L

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16
Q

What are the two common bursa of the elbow to become inflamed?

A

Subcutaneous bursa of the olecranon bursa and the bicipitoradial bursa

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17
Q

What is subcutaneous olecranon bursitis?

A

Sometimes called students elbow, dart throwers elbow and miner’s elbow
Results from excessive friction between the skin and the olecranon

18
Q

What is the radioulnar joint?

A

Three different articulations between the radius and ulna

19
Q

What is the proximal radioulnar joint?

A

Trochoid synovial joint

Primary site of supination and pronation

20
Q

Which ligaments hold the proximal radioulnar joint together?

A

Annular L

21
Q

The radial head is capable of what?

A

Being dislocated out of the annular L to varying degrees

This injury typically occurs from pulling on the arm of a child sometimes called Nursemaid’s elbow or pulled elbow

22
Q

What is the middle radioulnar joint?

A

Syndesmosis including the oblique cord between the ulna and radius + interosseous membrane

23
Q

What is the distal radioulnar joint?

A

Trochoid synovial joint between the head of the ulna and the ulnar notch of the radius laterally and the articular disc inferiorly

24
Q

What is the radiocarpal (wrist) joint?

A

Condylar synovial joint between the distal end of the radius plus the articular disc of the distal radioulnar joint and the scaphoid, lunate and Triquetrum bones

25
Q

Which ligaments hold the radiocarpal joint together?

A

Palmar and dorsal radiocarpal L, palmar and dorsal ulnarcarpal L, radial and ulnar collateral L

26
Q

What are the intercarpal joints?

A

Planar synovial joints including scapholunate, lunotriquetrum, pisotriquetrum, pisohamate, trapeziotrapezoid, capitohamate and trapeziocapitate

27
Q

Which ligaments hold the intercarpal joints together?

A

Posterior and anterior intercarpal L, interosseous intercarpal L

28
Q

What is the pisiform joint?

A

Articulation of the pisiform with the anterior surface of the triquetrum
Held together by pisohamate L (between pisiform and hook of hamate)

29
Q

What is the midcarpal joint?

A

Saddle synovial joint between proximal and distal rows of carpal bones

30
Q

What strengthens the midcarpal joint?

A

Anterior and posterior intercarpal L

Radial and ulnar collateral L of the wrist

31
Q

What is the 1st carpometacarpal joint?

A

Saddle synovial joint from trapezium to 1st metacarpal

Held together by palmar and dorsal carpometacarpal Ls

32
Q

What is the 2nd-5th carpometacarpal joints?

A

Planar synovial joint from distal carpal row to 2nd-5th metacarpal

33
Q

Which ligaments hold the 2-5th carpometacarpal joints together?

A

Palmar and dorsal carpometacarpal Ls
Pisometacarpal L
Radiate carpal L

34
Q

What are the intermetacarpal joints?

A

4 planar synovial joints between the bases of the 5 metacarpals
Held together by the dorsal and palmar intermetacarpal Ls as well as the interosseous intermetacarpal L

35
Q

What are the metacarpophalangeal joints?

A

5 condylar synovial joints held together by palmar L, medial and lateral collateral L as well as deep transverse metacarpal L

36
Q

What injury is common in individuals who ride a mechanical bull and is therefore now as bull rider’s thumb?

A

Sprain of the lateral collateral L and even avulsion of the lateral part of the proximal phalanx of the thumb

37
Q

Laxity or rupture of both collateral ligaments of the 1st metacarpophalangeal joints results in what?

A

Hyperabduction of that joint and is referred to as Skier’s thumb or game keeper’s thumb

38
Q

What is the 1st interphalangeal joint?

A

Ginglymus/ hinge synovial joint held together by palmar L, medial and lateral collateral Ls

39
Q

What are the proximal interphalangeal joints?

A

4 Ginglymus/hinge synovial joints that are the union between 2nd-5th proximal and intermediate phalanges
Held together by palmar, medial and lateral collateral Ls

40
Q

What are the distal interphalangeal joints?

A

4 Ginglymus/hinge synovial joints between 2nd-5th intermediate and distal phalanges
Held together by palmar L, medial and lateral collateral Ls

41
Q

Sudden hyper flexion of the distal IP joint can cause what?

A

Avulsion of the attachment of the long extensor tendon with that tendon away from the distal phalanx known as mallet finger or baseball finger