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MSK Exam 1 > 8: Anteromedial Thigh > Flashcards

8: Anteromedial Thigh Flashcards

1
Q

How do saphenous N and saphenous branch of descending genicular A leave the adductor canal?

A

Through medial canal

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2
Q

What do superficial inguinal LNs drain?

A

External iliac LNs

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3
Q

What do deep inguinal LNs drain into?

A

External iliac LNs

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4
Q

Location of superficial vs deep inguinal LNs

A

Superficial: in superficial fascia deep to inguinal ligament
Deep: medial to femoral V in femoral canal

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5
Q

Femoral Hernia

A

Small loop of SI can protrude through femoral ring into femoral canal

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6
Q

Population where femoral hernias are more common

A

Women

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7
Q

Common innervation of anterior thigh with exception

A

Femoral N (except psoas major and minor)

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8
Q

Nine separate muscles of the anterior thigh

A
  1. Iliacus
  2. Psoas major
  3. Psoas minor
  4. Pectineus
  5. Sartorius
  6. Rectus femoris
  7. Vastus lateralis
  8. Vastus medialis
  9. Vastus intermedius
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9
Q

Chief flexor of the thigh

A

Iliopsoas

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10
Q

Innervation of the three parts of the iliopsoas

A
  1. Iliacus: femoral N
  2. Psoas major: L1-3 anterior rami
  3. Psoas minor: L1-2 anterior rami
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11
Q

Iliopsoas O and I

A

O: lateral portion of bodies T12-L5, sacrum
I: lesser trochanter

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12
Q

Pectineus A

A

Adduct and flex thigh (acts like a medial muscle of thigh but technically anterior)

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13
Q

Pectineus O and I

A

O: pectineal line of pubis
I: pectineal line of femur

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14
Q

Longest muscle in body

A

Sartorius

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15
Q

Sartorius O and I

A

O: ASIS
I: pes anserinus

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16
Q

Three tendons that make up the pes anserinus

A

Sartorius, gracilis, semitendinosis

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17
Q

Sartorius A

A

Flex, abduct, laterally rotate thigh + flex leg

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18
Q

Four quadriceps muscles

A

Rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

19
Q

Which muscle of the quads passes two joints?

A

Rectus femoris

20
Q

O for rectus femoris vs vastus muscles

A

Rectus femoris O: AIIS

Vastus O: shaft of femur

21
Q

Common insertion of quadriceps femoris

A

Tibial tuberosity

22
Q

A of rectus femoris vs vastus muscles

A

Rectus femoris: extend leg + flex thigh

Vastus: extend leg

23
Q

Chief extensor of the leg

A

Quadriceps femoris

24
Q

What does the quadriceps tendon eventually form?

A

Patellar ligament

25
Q

Osgood-Schlatter

A

Child’s quads pull on patellar ligament, tendon pulls away from tibia -> pain and swelling; some children may form new bone growth, causing a bony lump in that spot

26
Q

Medial thigh common innervation and one exception

A

Obturator N (besides hamstring part of adductor magnus)

27
Q

What is the only adductor / medial thigh muscle to cross the knee joint?

A

Gracilis

28
Q

Gracilis O and I

A

O: pubis body, inferior ramus
I: superior tibia

29
Q

Gracilis A

A

Adduct thigh, flex and medially rotate leg

30
Q

Adductor longus O and I

A

O: body of pubis inferior to pubic crest
I: middle 1/3 of linea aspera

31
Q

Adductor brevis and longus action

A

Adduct and flex thigh

32
Q

Adductor brevis relation to pectineus and adductor longus

A

Deep to both

33
Q

Adductor brevis O and I

A

O: pubis
I: proximal linea aspera

34
Q

Largest adductor muscle

A

Adductor magnus

35
Q

Adductor portion of adductor magnus: O and I

A

O: ischiopubic ramus
I: gluteal tuberosity, linea aspera, medial supracondylar line

36
Q

Hamstring portion of adductor magnus O and I

A

O: ischial tuberosity
I: adductor tubercle

37
Q

innervation for adductor vs hamstring portion of adductor magnus

A

Adductor: obturator N
Hamstring: tibial N from Sciatic N

38
Q

Adductor vs hamstring portion of adductor magnus: action

A

Adductor: adducts and flexes thigh
Hamstring: adducts and extends thigh

39
Q

Obturator externus relation to pectineus

A

Deep to pectineus

40
Q

Obturator Externus O and I

A

O: external margins of obturator foramen
I: trochanteric fossa

41
Q

Obturator externsus A

A

Laterally rotates thigh

42
Q

What is strained/stretched in a “groin pull”?

A

Proximal attachments of thigh adductor/flexor muscles

43
Q

Hilton’s Law

A

Nerves that supply motor branches to muscles crossing a joint also provide branches to skin over the muscles and to periarticular tissues

44
Q

Spinal cord level for a joint

A

Joints always have nerves from more than one level of the spinal cord

MSK Exam 1 (25 decks)

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