10-13 Joints UE Flashcards Preview

Anatomy EXAM 1 > 10-13 Joints UE > Flashcards

Flashcards in 10-13 Joints UE Deck (21):
1

Shoulder Glenohumeral Joint [4]

1. Multiaxial
2. Synovial
3. Ball&socket joint
4. MOST easily dislocated

2

What is the purpose of the Joint Capsule?

Surrounds the joint and permits its movement

3

Coracohumeral ligament

Attaches Coracoid process to Humeral GREATER tubercle

4

Glenohumeral ligament

ALL AROUND LIGAMENT WRAP attaching [scapula Supraglenoid tubercle] to [humerus ANT lesser tubercle]

5

Transverse humeral ligament [2]

1. Spans Humerus greater & lesser tubercles

2. Holds Bicep Long head tendon in place

6

Glenoid labrum

fibrocartilaginous ligament surrounding Glenoid cavity margin>> that deepens the Socket

7

What is the purpose of the [Bursae] and where can you find it? (3)

Allow greater ease of movements

a. subacromial
b. subdeltoid
c. subscapular

8

1. Acromioclavicular Joint (AC)

2. What ligaments does it contain [2]

B: This joint is found where?

1. Synovial planar joint that allows gliding movement during arm movement & scapula rotation

2. Contains acromioclavicular ligament & 2 Coracoclavicular ligaments

B: between Acromion & Clavicle

9

A: Describe the [ Humero-ulnar joint ]
B: Describe its Joint Capsule

C: Name and Describe the ligament it houses?

A: Uniaxial, synovial ginglymus hinge joint
B: surrounds joint and permits flexion & extension

C: ULNAR COLLATERAL LIGAMENT=triangular ligament w/distinct bands tht connects [medial epicondyle] to
[elbow coronoid & olecranon process]

10

[ Humeroradial joint ]
A: Describe its Joint Capsule

B: Name and Describe the ligament it houses?

A: Surrounds capitulum and radius head

B: RADIAL COLLATERAL LIGAMENT= weak but posterolaterally stable ligament that attaches lateral epicondyle to radial notch of ulna and annular ligament

11

A: Describe the [Proximal Radio-ulnar joint]

B: Name and Describe the ligament it houses? [3]

A: Uniaxial synovial pivot joint

B: ANNULAR LIGAMENT=
1. surrounds radial head & ulna radial notch
2. Keeps radius head in notch
3. Enables pronation & supination

12

Interosseous Membrane [2]

syndesmosis fibrous joint that unites radius & ulna AND divides forearm into ANT/POST compartments

13

A: Describe the [ Distal Radio-ulnar Joint ]
B: Describe its Joint Capsule [3]

C: Name and Describe the ligament it houses? [2]

A: uniaxial, synovial joint
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B:
1.extends from ulnar head around ulnar notch of radius
2. Allows pronation & supination
3. thin superiorly
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C: PALMAR & DORSAL RADIOULNAR LIGAMENTS: extend transversely between radius & ulna; and the articular disc binds bones together

14

A: Describe the [ Radiocarpal joint ]

B: Describe its Joint Capsule [2]

C: Name and Describe the 3 ligaments it houses?

D: What is the PRIMARY function of all 3 ligaments?

A: Biaxial, synovial ellipsoid joint
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B:
1. extends from radius to [scaphoid, lunate & triquetrum]

2. provides minimal support but enables EFAa (flexion, extension, ABduction, aDDuction) & wrist circumduction
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C: [Dorsal Radiocarpal] = weak ligament
[Volar Palmar Radiocarpal] = strong & stabilizing
[Radial collateral ] = helps stabilize carpal proximal row

D: CONNECTS RADIUS TO
[SCAPHOID,LUNATE & TRIQUETRUM]

15

Ulnar-carpal Joint [2]

1. extends from Ulna Styloid process to medial side of dorsal triquetral, pisiform & palmar flexor retinaculum

2. Articular disc covers Ulna distal end

16

Intercarpal Joints

2) These bones are joined by which ligaments?

synovial plane joints that enable gliding and sliding movements

2) Intercarpal Joints are joined by ANT, POST & interosseous ligaments

17

Carpometacarpal Joints

2. Which ligament is the strongest?

plane, synovial joints (EXCEPT THUMB) that allows movements

2. DORSAL LIGAMENT

18

Trapeziometacarpal joint "TMC"

Biaxial, saddle joint that allows EFAa (Extension, Flexion, ADDuction, aBduction) & [Thumb circumduction/opposition]

19

Metacarpophalangeal Joint

Biaxial, condyloid synovial joint that allows EFAa & [individual finger circumduction]

EFAa=Extension, Flexion, ADDuction, aBduction

20

Interphalangeal Joint

2) How are medial & lateral COLLATERALS related to these joints?

3) How are PALMAR LIGAMENTS related to these joints?

uniaxial, synovial joint that allows FLEXION & EXTENSION ONLY

2) m/L COLLATERALS obliquely prevent side-to-side abduction & Adduction movements

3) PALMAR LIGAMENTS prevent hyperextension

21

How do the 4 Rotator Cuff Muscles (____) attribute to the Shoulder Joint

[SitS] Rotator Cuff muscles help stabilize the shallow shoulder joint articulation w/out inhibiting the extensive shoulder ROM