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Anatomy > Hip Ligaments & Joint Structures > Flashcards

Hip Ligaments & Joint Structures Flashcards

1
Q

Acetabular Labrum - Function

A

Fibrocartilage

  1. Increase bony fit - increase diameter & depth of acetabulum
  2. Decrease compressional stress (distribute force)
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2
Q

Path of Foveolar Artery

A

Comes off Obturator Artery –> through Acetabular notch (gap in articular cartilage) –> fovea capitis, supplies femoral head

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3
Q

Transverse Ligament (location/function)

A

Across acetabular notch (links bone to same bone- unusual!) Intrinsic
1. Protective barrier - lets foveolar artery pass without getting pinched

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4
Q

Ligamentum Teres of Head of Femur

A

Acetabular notch to head of femur, intrinsic

1. Surrounds foveolar artery to protect it

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5
Q

Iliofemoral Ligament

A

AIIS & Acetabular rim –> Intertrochanteric line
Capsular lig, anterior femur, forms upside down “Y”
1. Limits hyperextension
2. Limits Adduction

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6
Q

Pubofemoral Ligament

A

Superior pubic ramus –> inferior femoral neck
Capsular, inside of femoral neck
1. Limits hyperextension
2. Limits ABDuction

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7
Q

Ischiofemoral Ligament

A

Ischial acetabular rim –> Intertrochanteric line
Capsular, posterior, wraps around anteriorly
1. Limits hyperextension
2. Limits Internal rotation

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8
Q

Close packed position of hip

A

Hyperextension (3 ligaments pull joint closer together)

More prone to sublux in flexion

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9
Q

Sacroiliac Joint - type

A

Gliding synovial joint

Articular surface: auricular surface of ilium

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10
Q

Anterior Sacroiliac Ligament

A

Anterior auricular margins of sacrum & ilium

Capsular

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11
Q

Posterior sacroiliac ligament

A

PSIS & Auricular margins of sacrum & ilium

Capsular

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12
Q

Iliolumbar ligament

A

L4-L5 Transverse Process –> Iliac crest & anterior sacroiliac lig (Capsular)

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13
Q

Sacrotuberous ligament

A

Extrinsic
Anterior sacrum –> Ischial tuberosity
Prevent anterior tilt of sacrum (“tail sticking out)

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14
Q

Sacrospinous Ligament

A

Anterior sacrum –> Ischial spine
Extrinsic, deeper
Prevent anterior tilt of sacrum (tail sticking out)

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15
Q

Greater and Lesser Sciatic Foramina Boundaries

A

Greater: Greater sciatic notch, sacrotuberous lig, sacrospinous lig

Lesser: Lesser sciatic notch, sacrotuberous lig, sacrospinous lig (Sacrospinous divides foramina)

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16
Q

Greater Sciatic Foramen Contents (from superior to inferior)

A 
Sup Gluteal A & N
Piriformis
Inferior Gluteal A & N
Sciatic N
Post. Fem Cutaneous N
Pudendal N
Internal Pudendal A
17
Q

Lesser Sciatic Foramen contents

A

Obturator Internis
Internal Pudendal Artery
Pudendal N

18
Q

Sagittal Plane Normal ROM

A

140º Flexion –> 20º Hyperextension

19
Q

Frontal Plane Normal ROM

A

50º ABDuction

30º Adduction

20
Q

Transverse Plane Normal ROM

A

30º ER

40º IR

21
Q

Pelvic Tilt Right + movements at hip + agonists

A

Right side pelvis falls inferior
L hip Adduction (Contralateral agonist)
R hip ABDuction (Ipsilateral agonist)

22
Q

Criteria to be Primary Mover for a motion

A
  1. Greatest XS area (force production: size vs pennation angle)
  2. Greatest moment arm (line of pull furthest from axis)
23
Q

Self Antagonistic Muscles - examples

A
  • Adductor magnus (ant flexes + IR, post extends + ER)
  • Gluteus maximus (upper ABD, lower Add)
  • Glut med & min (ant. flex/IR, post. ext/ER)
24
Q

Trendelenburg/Duchenne Gait

A

Weak hip adductors

Stance phase: pelvis drops to contralateral side OR trunk lean over stance leg to stop pelvic drop

25
Q

Anteversion of femoral head

A

Transverse plane, line from head of femur to greater troch

15º anteversion is normal (head facing anteriorly)

26
Q

Origin on Ischial Tuberosity (6)

A 
Gemellus  inferior
Quadratus femoris
Biceps femoris long head
Semimembranosus
Semitendinosus
Adductor magnus (+ ischial ramus)
27
Q

Insertion on Greater Trochanter (6)

A 
Gluteus medius
Gluteus minimus
Piriformis
(medial greater troch:)
Gemelli superior & inferior & obturator internis
28
Q

Attachments to fibular head (6)

A
  1. Biceps Femoris
  2. Peroneus longus (+ prox lat fibula)
  3. Soleus (+ neck, soleal line tibia)
  4. Lateral collateral ligament
  5. Arcuate popliteal ligament
  6. Ant&post ligaments of fibular head

Anatomy (7 decks)

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