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CT MSK > UE: Arthrology > Flashcards

UE: Arthrology Flashcards

1
Q

What type of joint is the Sternoclavicular Joint?

What bones are involved?

A

Sellar Joint

Manubrium (clavicular notch)

Clavical (sternal facet)

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2
Q

What ligaments are involved in the Sternoclavicualr Joint?

(4)

A

Costoclavicular L. (clavical’s sternal end to first rib)

Anterior/Posterior Sternoclavicular L. (thickened fibrous capsule on Ant/Post end respectively)

Interclavicular L. (sternal end of clavical to contralateral side)

Remember: Sternoclavicular Ligaments CAPI

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3
Q

What type of joint is the acromioclavicular Joint?

What bones are involved?

A

Planar Joint

Acromial Facet on Clavicle

Acromion on Scapula

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4
Q

What ligaments are involved for Acromioclavicular Joint?

A

Acromioclavicular L. (acromion to clavicle)

Coracoclavicular L.: two parts make it up

  • Trapezoid L.
  • Conoid L.
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5
Q

Shoulder seperation is caused due to the injury of what joint?

A

Acromioclavicular Joint

Rupture of Acromioclavicular L.

NOTE: it can seperate with or without rupture of the coracoclavicular L.

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6
Q

What type of joint is the Glenohumeral Joint?

What bones are involved?

What components deepen and support the joint?

A

Spheroidal Joint

Glenoid Cavity of Scapula (Scapular Head)

Glenoid Labrum and Head of Humerus

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7
Q

Including ligaments, the Glenoid Labrum and Articular Capsule also support the Glenohumeral Joint. Specifically, the Articular Capsule involves 2 structures, the Fibrous Capsule and the Synovial Membrane.

Describe what the 2 openings on the Fibrous Capsule allow to pass through?

Describe the Synovial Membrane

A

Fibrous capsule allows passage of the Long Head of the Biceps Brachii and Subscapular Bursa

The Synovial Membrane lines the Fibrous Capsule and houses the Bursae of Glenohumeral Joint

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8
Q

Describe the 2 bursae found in the synovial membrane of the glenohumeral joint in terms of location

Which one communicates with the Synovial Membrane?

A

Subscapular Bursa

Between the Subscapularis T. and Scapular Neck

Communicates with synovial membrane

Subacromial Bursa

Between Deltoid M., Supraspinatus T. and Articular Capsule

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9
Q

What ligaments support the Glenohumeral Joint?

What ligament encapsulates the long head of the biceps brachii?

A

Glenohumeral L. (glenoid labrum and supraglenoid Tubercle to Anatomical Humeral Neck)

Coracohumeral L. (coracoid process to greater tubercle of humerus)

Transverse Humeral L. (greater humeral tubercle to lesser humeral tubercle)

Coracoacromial L. (coracoid process to acromion)

Transverese Humeral L. encapsulates the long head of the biceps brachii

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10
Q

What is the name of the osseoligamentous arch that prevents the superior displacement of the Humerus from Glenoid Cavity?

A

Coracoacromial Arch

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11
Q

Why is the glenohumeral joint so susceptible to dislocation ?

Because of the Coracoacromial Arch, dislocation of the glenohumeral joint occurs most commonly in what two directions?

A

High mobility and relative instability

Anteriorly and Inferiorly

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12
Q

What type of joint is the Elbow joint?

What bones are involved?

What ligaments?

A

Ginglymus Synovial Joint (Hinge)

Humeral Epicondyles, Trochlear Notch of Ulna, and Head of Radius

Ulnar Collateral (Medial Epicondyle to Coronoid Process and Olecranon)

Radial collateral L. (Lateral Epicondyle to annular L. of radial head)

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13
Q

The elbow joint has two subset joint types that are called what?

A

Humeroulnar Joint

Humeroradial Joint

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14
Q

The Ulnar Collateral L. has the following 3 bands.

Which of these is strongest and cord shaped?

Which is weakest and fan shaped?

Which deepens the socket for Humeral Trochlea?

A

Anterior Band: strongest and cord shaped

Posterior Band: weakest and fan shaped

Oblique Band: Deepens socket for Humeral Trochlea

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15
Q

What are the Bursa od the Elbow Joint? (6)

A

Olecranon Bursa (3 subtypes)

Subcutaneous Bursa of Medial Humeral Epicondyle

Subcutaneous Bursa of Lateral Humeral Epicondyle

Bursa of Anconeus

Bursa at Origin of Extensor Carpii Radialis Brevis M.

Bicipitoradial Bursa

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16
Q

Where would you find the following bursa?

SubQ Bursa of Medial Humeral Epicondyle

Bursa of Anconeus

Bursa @ Origin of Extensor Carpi Radialis Brevis

Bicipitoradial Bursa

A

SubQ Bursa of Medial Humeral Epicondyle: SubQ CT over medial humeral epicondyle

Bursa of Anconeus: b/w anconeus and lateral humeral epicondyle

Bursa @ Origin of Extensor Carpi Radialis Brevis: b/w lateral humeral epicondyle and Extensor Carpi Radialis BRevis M.

Bicipitoradial Bursa: b/w biceps brachii T and radial tuberosity

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17
Q

Which of the following subsets of olecranon bursa is b/w the Triceps Brachii T. and olecranon?

A. Subtendinous Olecranon Bursa

B. Intratendinous Olecranon Bursa

C. Subcutaneus Olecranon Bursa

A

Subtendinous Olecranon Bursa

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18
Q

The elbow is capable of being dislocated in what direction due to force along the long acis of the forearm?

Elbow dislocation usually invovles what L. tear?

A

Posteriorly

Ulnar Collateral L.

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19
Q

What are the 2 most common Elbow Bursa to become inflamed?

Which one is associated with Students elbow?

What is the bursitis that’s called student’s elbow caused by?

A

Bicipitoradial Bursa

Subcutaneous Olecranon Bursa

Subcutaneous Olecranon Bursistis is associated with Student’s Elbow, and is caused by excessive friction b/w skin and olecranon

20
Q

The Radioulnar Joint has 3 different articulations.

What are the names of these articulations/joints?

What are their Joint types?

A

Proximal Radioulnar Joint

Trochoid

Middle Radioulnar Joint

Syndesmosis

Distal Radioulnar Joint

Trochoid

21
Q

The Interosseous membrane and Oblique cord of the Radiulnar joint is associated with what articulation?

A. Proximal Radioulnar Joint

B. Middle Radioulna Joint

C. Distal Radioulna Joint

A

Middle Radioulna Joint

22
Q

Which articulation of the Radioulnar Jointis an L-shaped joint found between ulna head and ulnar notch of the radius laterally, and articular disk inferiorly

A. Proximal Radioulnar Joint

B. Middle Radioulna Joint

C. Distal Radioulna Joint

A

Distal Radioulna Joint

23
Q

What is “Pulled Elbow” or “Nursemaid’s Elbow”?

A

Usually occurs from pulling the arm of a child

Occurs when the Radial Head is dislocated out of the Annular L. at varying degrees

NOTE: Annular L. Starts at the coronoid process of the ulna, around the radial head, and back to the ulna

24
Q

What is the Sacciform Recess?

What structures does it protrude out from in the proximal and distal radioulnar joint?

A

Small pocket of synvoial membrane that protrudes out

Proximal Radioulnar Joint: from under Annular L.

Distal Radioulnar Joint: from under fibrous capsule

25
Q

T/F: The Fibrous capsule of the Radioulnar joint is deficient superiorly and mostly associated with the Distal Radioulnar Joint

A

True

26
Q

What type of Joint is the Radiocarpal Joint?

What bones are involved? (include 3 carpals)

A

Condyloid

Location:

Distal end of radius

Articular disc of Distal Radioulnar Joint

Scaphoid, Lunate, Triquetrum

27
Q

What ligaments are associated with the Radiocarpal Joint? (6)

A

Palmar/Dorsal Radiocarpal L.

Palmar/Dorsal Ulnocarpal L.

Radial Collateral L. of Wrist

Ulnar Collateral L. of Wrist

28
Q

What radiocarpal joint Ligament is this?

1 band from Radius across scaphoid to Lunate

1 band from Radius to Capitate

A

Palmar Radiocarpal L.

29
Q

What radiocarpal joint Ligament is this?

1 oblique band from Radius across Lunate to Triquetrum

A

Dorsal Radiocarpal L.

30
Q

What radiocarpal joint ligament is this?

1 band from Ulnar Head to the Lunate

1 band from Ulnar Head to Triquetrum

A

Palmar Ulnocarpal L.

31
Q

All of the following Ligaments of the Radiocarpal Joint send at least one band to the TRiquetrum except?

A. Palmar Radiocarpal L

B. Dorsal Radiocarpal L

C. Palmar Ulnocarpal L.

D. Dorsal Ulnocarpal L.

A

Palmar Radiocarpal L

Instead sends a band to the Lunate and the Capitate

32
Q

What radiocarpal Joint L. is this?

Ulnar head to the Triquetrum

A

Dorsal Ulnocarpal L.

33
Q

Where do the following ligaments of the radiocarpal joint traverse?

Radial Collateral L. of the Wrist

Ulnar Collateral L. of the Wrist

A

Radial Collateral L. of the wrist

Radial Styloid Process to Scaphoid

Ulnar Collateral L. of the wrist

Ulnar Styloid process to Triquetrum

34
Q

What type of joint is the Intercarpal Joint?

What are the associating Ligaments?

NOTE: Scapholunate, Lunotriquetrum, Pisotriquetrum, Pisohamate, Trapeziotrapezoid, Capitate, Trapeziocapitate

A

Planar Joint

Anterior/Posterior Intercarpal L. (b/w carpal bones Ant/Post)

Interosseous Intercarpal L. (joint space b/w carpal bones)

Pisohamate L (b/w pisiform and hook of hamate)

35
Q

What type of joint is the 1st Carpometacarpal joint?

Bones involved?

Ligaments?

A

Sellar Joint

Trapezium to 1st Metacarpal

Palmar/Dorsal Carpometacarpal L

36
Q

What type of joint is 2nd-5th Carpometacarpal Joints?

Bones involved?

Ligaments?

A

Planar Joint

Distal Carpal row to 2-5 metacarpal

Palmar/Dorsal Carpometacarpal L.

Pisometacarpal L: (assoc. w/ 5th metacarpal)

Radiate Carpal L. (capitate to bases of Metacarpal base

37
Q

Pisometacarpal L. joins what other ligament that is a continuation of what flexor muscle tendon?

A

Pisometacarpal L. joins Pisohamate L. as a continuation of the Flexor Carpi Ulnaris T.

38
Q

Intermetacarpal Joint type

Ligaments

A

4 Planar Synovial Joints

Palmer/Dorsal Intermetocarpal L.

Interosseus Intermetacarpal L.

39
Q

What type of joint are the Metacarpophalangeal Joints?

Ligaments?

A

5 Condyloid Joints

Palmar L.

Medial Collateral L.

Lateral Collateral L.

Deep Transverse Metacarpal L. (joins palmar L. of the medial 4 metacarpophalangeal joint)

40
Q

What ligament is strained in Bull Rider’s Thumb?

What bones could potentially be avulsed?

A

Sprain of the LAteral Collateral L of the metacarpophalange joint

Lateral Part of the proximal phalanx of thumb

41
Q

What is Skier’s THumb” or “Game Keeper’s Thumb”?

A

Rupture of both colalteral ligaments of the 1st metacarpophlangeal joints that causes hyperabduction of that joint

42
Q

What type of joint are the interphalangeal joints?

What interphalangeal joint types are specific to phalanges 2-5?

Ligaments?

A

Ginglymus Joint (Hinge)

Prximal and Distal Interphalangeal Joints

Palmar L.

Medial Collateral L.

Lateral Collateral L.

43
Q

Name this Ligament Correctly

A

Lateral Collateral L. of the Proximal Interphalangeal Joint of the 3rd Digit

or

Lateral Collateral L. of the 2nd Proximal Interphalangeal Joint

44
Q

T/F: In Interphalangeal Joints, the Palmar L. is a thickened anterior aspect of the articular capsule, and the Medial/Lateral Collateral L. insert onto the Palmar L.

A

True

45
Q

What joint is affected, and how is the joint affected in “Baseball finger” or “Mallet Finger”?

A

Hyperflexion of the distal interphalangeal joint

Can cause avulsion of long extensor tendons away from the distal phalanx

46
Q

What is Dupuytren Contracture?

A

Disease that causes the shortening, thickening, and fibrosis of the palmar aponeurosis and fascia

Causes the partial flexion of the 4th and 5th digits

47
Q

What is a ganglion cyst?

How does it form?

A

Ganglion cyst is a painless lumb that forms due to accumulation of fluid that arsies from irritating synovial sheaths

Infections of the synovial sheath can cause swelling in specific configurations that follow the shape of the sheaths

CT MSK (20 decks)

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