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Anatomy > Ligaments > Flashcards

Ligaments Flashcards

1
Q

Anterior Sternoclavicular Ligament Function

A

Resists retraction and depression, reinforces joint capsule

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2
Q

Posterior Sternoclavicular Ligament Function

A

Resists protraction and depression, reinforces joint capsule

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3
Q

Interclavicular Ligament Function

A

Restricts depression

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4
Q

Costoclavicular Ligament Function

A

Restricts elevation, protraction, and retraction; according to Groh and Wirth (2011), primary restraint to longitudinal rotation

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5
Q

AC ligaments Function

A

Restricts anterior and posterior movement of the distal clavicle with respect to the scapula (Bontempo and Mazzocca, 2010)

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6
Q

CC ligament (trapezoid and conoid ligaments) Function

A

Primary restraint to vertical translation of the AC Joint, strengthens connection of the scapula and clavicle, promotes scapulohumeral motion (Bontempo and Mazzocca, 2010)

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7
Q

Trapezoid ligament Function

A

Restraint to compression forces at the AC joint (Bontempo and Mazzocca, 2010)

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8
Q

Conoid ligament Function

A

The primary restraint to vertical translation at larger degrees of AC joint translation (Bontempo and Mazzocca, 2010)

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9
Q

Superior GH ligament Function

A

Adduction; inferior and anterior-posterior translation of humeral head

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10
Q

Middle GH ligament Function

A

Anterior translation of humeral head (especially in 45-60° of abduction); external rotation

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11
Q

Inferior GH ligament

(anterior band, posterior band, and axillary pouch) Function

A

Axillary pouch: 90° of abduction, combined with anterior-posterior and inferior translations
Anterior band: 90° of abduction and full external rotation; anterior translation
Posterior band: 90° of abduction and full internal rotation

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12
Q

Coracohumeral ligament Function

A

Adduction; inferior translation of humeral head; external rotation

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13
Q

Glenoid labrum Function

A

50% of overall depth of glenoid fossa; increases contact area with humeral head, stabilizes joint

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14
Q

Biceps brachii (long head) Function

A

In active state, restricts anterior translation of humeral head

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15
Q

Rotator cuff muscles (Supraspinatus, infraspinatus, subscapularis, teres minor) Function

A

Provide actively stabilizes GH joint during dynamic activities

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16
Q

Anterior Sacroiliac Ligament Function

A

Provides stabilization to anterior aspect of SI joint

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17
Q

Iliolumbar Ligament Function

A

Provides stabilization to anterior aspect of SI joint; counters motion of L4 and L5 on pelvis

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18
Q

Interosseous SI Ligaments Function

A

Resists nutation

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19
Q

Long Posterior Sacroiliac Ligament Function

A

Resists counter-nutation

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20
Q

Short Posterior Sacroiliac Ligament Function

A

Provide stability to posterior aspect of SI joint

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21
Q

Sacrotuberous Ligament Function

A

Resists nutation

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22
Q

Sacrospinous Ligament Fxn

A

Resists nutation

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23
Q

Superior pubic ligament Fxn

A

Debatable whether it stabilizes the joint or is functionally insignificant

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24
Q

Inferior (arcuate or subpubic) pubic ligament Fxn

A

Insufficient data supporting purpose

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25
Q

Anterior pubic ligament Fxn

A

Maintains stability of pubic symphysis
Superficial fibers connect with the insertions of rectus abdominis and external/internal abdominal oblique tendons
Possibly blends with interpubic disc

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26
Q

Posterior pubic ligament Fxn

A

Unknown purpose

27
Q

Interpubic disc Fxn

A

Site of connective tissue fibers; aids in providing stability to pubic symphysis

28
Q

Iliofemoral ligament (Y-ligament) Fxn

A

Taut in extension, external rotation, and internal rotation

29
Q

Pubofemoral ligament Fxn

A

Taut in abduction, extension, and external rotation

30
Q

Ischiofemoral ligament Fxn

A

Taut in extension, adduction, and internal rotation

31
Q

Medial collateral ligament Fxn

A

Resists valgus, extension, extremes of axial rotation

32
Q

Lateral collateral ligament Fxn

A

From lateral epicondyle of femur to head of fibula Resists varus, extension, extremes of axial rotation

33
Q

Posterior capsule (oblique popliteal ligament and posterior-lateral capsule) Fxn

A

Resists extension, external rotation, varus

34
Q

Anterior cruciate ligament Fxn

A

Resists extension, anterior translation of tibia/posterior translation of femur, extremes of varus, valgus and axial rotation

35
Q

Posterior cruciate ligament Fxn

A

Resists flexion, posterior translation of tibia/anterior translation of femur, extremes of varus, valgus and axial rotation

36
Q

Menisci Fxn

A

Shock absorption

37
Q

Patellar ligament Fxn

A

Restricts excessive superior translation; attachment for quadriceps femoris

38
Q

Medial retinaculum Fxn

A

Restricts excessive lateral and superior translation

39
Q

Lateral retinaculum Fxn

A

Restricts excessive medial and superior translation

40
Q

Anterior tibiofibular ligament Fxn

A

Maintains articulation between tibia and fibula

41
Q

Posterior tibiofibular ligament Fxn

A

Maintains articulation between tibia and fibula

42
Q

Ligaments resisting DTFJ distraction

A

anterior tibiofibular, posterior tibiofibular, and interosseous tibiofibular ligament*

43
Q

Deltoid ligament Fxn

A

Limits eversion

44
Q

Anterior talofibular ligament Fxn

A

Resist inversion*, adduction and anterior glide of talus during plantarflexion

45
Q

Calcaneofibular ligament Fxn

A

Resists inversion (especially in dorsiflexed position) and posterior glide of talus during ankle dorsiflexion

46
Q

Posterior talofibular ligament Fxn

A

Stabilizes the talus within the mortise. Limits excessive abduction of the talus (especially in dorsiflexed position), inversion, and posterior glide of talus during dorsiflexion

47
Q

Inferior transverse ligament Fxn

A

Forms the posterior wall of the talocrural joint

48
Q

Interosseous talocalcaneal ligament

A

Bind talus with calcaneus;

Limits extremes of all motions

49
Q

Cervical ligament

A

Bind talus with calcaneus;

Limits extremes of all motions

50
Q

Calcaneofibular ligament (part of LCL)

A

Limits excessive inversion; Works with anterior talofibular ligament to limits inversion throughout ankle dorsiflexion and plantarflexion

51
Q

Tibiocalcaneal fibers of deltoid ligament (MCL)

A

Limits excessive eversion

52
Q

Lateral talocalcaneal ligament

A

Reinforce posterior joint capsule;

Secondary stabilizer

53
Q

Posterior talocalcaneal ligament

A

Reinforce posterior joint capsule;

Secondary stabilizer

54
Q

Plantar calcaneonavicular ligament (spring ligament) Fxn

A

Forms floor and medial wall of talonavicular joint

55
Q

Interosseous ligament (of subtalar joint)

A

Reinforce posterior joint capsule

56
Q

Tibionavicular fibers of deltoid ligament

A

Reinforce medial joint capsule

57
Q

Long plantar ligament

A

Reinforce plantar surface of calcaneocuboid joint Provide structural stability to lateral column of foot

58
Q

Short plantar ligament (plantar calcaneocuboid ligament)

A

Reinforce plantar surface of calcaneocuboid joint

Provide structural stability to lateral column of foot

59
Q

Transverse metatarsal ligaments

A

Restricts abduction by connecting metatarsals

60
Q

Annular ligament

A

Stabilizes the radial head against the ulna; restricts distraction of the radius and external rotation

61
Q

Quadrate ligament

A

Supports the capsule of the PRUJ throughout motion; limits the spin of radial head in supination and pronation

62
Q

Palmar radioulnar ligament

A

Limit supination

63
Q

Dorsal radioulnar ligament

A

Limit pronation

64
Q

Articular Disc of TFCC

A

Primary stabilizer of the DRUJ

Anatomy (5 decks)

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