Gluteal Region and Posterior Thigh Flashcards

1
Q

Walking pattern caused by unilateral weakness of the hip abductors, mostly the gluteal musculature

A

Trendelenburg gait

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2
Q

Nerve damage that could cause Trendelenburg gait

A

Superior gluteal nerve or 5th lumbar spine lesion

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3
Q

Syndrome that involves variants of the sciatic nerve, such as the premature separation of sciatic nerve branches

A

Piriformis syndrome

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4
Q

Hamstring muscles

A

Semitendinosus, Semimembranosus, Biceps femoris long head

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5
Q

3 common features of hamstring muscles

A
  1. Proximal attachment to ischial tuberosity deep to gluteal maximus muscle
  2. Distal attachment to the bones of the legs (span two joints, provide extension at hip joint and flexion at knee joint)
  3. Innervation by the tibial division of the sciatic nerve
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6
Q

Nerves that emerge inferior to the piriformis muscle (5)

A

Pudendeal nerve, Nerve to obturator internus, posterior cutaneous nerve of the thigh, Sciatic nerve, and inferior gluteal nerve

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7
Q

nerve that emerges superior to the piriformis muscle

A

Superior gluteal nerve

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8
Q

Nerve that is a dorsal division of the sacral plexus, L4, L5, S1

A

Superior gluteal nerve

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9
Q

Nerve that is a dorsal division of the sacral plexus, L5, S1, S2

A

Inferior gluteal nerve

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10
Q

Superior, middle, and inferior cutaneous nerves that supply the skin of the gluteal region; are small branches of the posterior rami of sacral nerves

A

Cluneal nerves

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11
Q

Terminal division of the femoral nerve in the lower leg

A

Saphenous nerve

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12
Q

Nerve that is a ventral division of the sacral plexus; L4, L5, S1

A

Nerve to quadratus femoris

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13
Q

Nerve that is a ventral division of the sacral plexus; L5, S1, S2

A

Nerve to obturator internus

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14
Q

Nerve that is a ventral division of the sacral plexus; S2, S3, S4

A

Pudendel nerve

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15
Q

Nerve that supplies the external anal sphincter and structures in the perineum

A

Pudendal nerve

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16
Q

Nerve that is made up of dorsal and ventral divisions of the sacral plexus; L4, L5, S1, S2, S3

A

Sciatic nerve

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17
Q

Nerve that is made up of dorsal and ventral divisions of the sacral plexus; S1, S2, S3

A

Posterior cutaneous nerve of the thigh

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18
Q

Branches of the posterior cutaneous nerve of the thigh

A

Perineal branch and gluteal branches

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19
Q

The perineal branch of the posterior cutaneous nerve of the thigh innervates this

A

Sensation to the perineum

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20
Q

The gluteal branches of the posterior cutaneous nerve of the thigh supply this region

A

Posteroinferior quadrant of skin of gluteal region

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21
Q

Artery that enters the gluteal region through the greater sciatic foramen superior to piriformis.
Divides into superficial and deep branches

A

Superior gluteal artery

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22
Q

Artery that enters the gluteal region through the greater sciatic foramen inferior to piriformis. Descends on the medial side of the sciatic nerve and participates in the cruciate anastomosis of the thigh

A

Inferior gluteal artery

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23
Q

Artery that enters the gluteal region through the greater sciatic foramen; descends posterior to the ischial spine and enters the perineum through lesser sciatic foramen.

A

Internal pudendal artery

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24
Q

The perforating arteries of the thigh enter the posterior compartment by perforating the aponeurotic portion of these structures

A

Adductor magnus muscle and medial intermuscular septum

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25
Q

The perforating arteries of the posterior thigh continue to the anterior compartment by piercing this structure

A

Lateral intermuscular septum

26
Q

Action of the gluteus maximus muscle

A

Extends thigh and assists in lateral rotation; rising from sitting

27
Q

Innervation of the gluteus maximus muscle

A

Inferior gluteal nerve

28
Q

Action of the gluteus medius muscle

A

Abduct and medially rotate thigh; keep pelvis level

29
Q

Innervation of the gluteus medius muscle

A

Superior gluteal nerve

30
Q

Action of the gluteus minimus muscle

A

Abduct and medially rotate thigh; keep pelvis level

31
Q

Innervation of the gluteus minimus muscle

A

Superior gluteal nerve

32
Q

Action of the tensor fasciae latae muscle

A

Abduct and medially rotate thigh; keep pelvis level

33
Q

Innervation of the tensor fasciae latae muscle

A

Superior gluteal nerve

34
Q

Action of piriformis muscle

A

Laterally rotate extended thigh and abduct flexed thigh; steady femoral head

35
Q

Innervation of piriformis muscle

A

Branches of anterior rami S1 and S2

36
Q

Action of obturator internus

A

Laterally rotate extended thigh and abduct flexed thigh; steady femoral head

37
Q

Innervation of obturator internus

A

Nerve to obturator internus

38
Q

Action of gemellus superior muscle

A

Laterall rotate extended thigh and abduct flexed thigh; steady femoral head

39
Q

Innervation of gemellus superior muscle

A

Nerve to obturator internus

40
Q

Action of gemellus inferior muscle

A

Laterally rotate extended thigh and abduct flexed thigh; steady femoral head

41
Q

Innervation of gemellus inferior muscle

A

Nerve to quadratus femoris

42
Q

Action of quadratis femoris muscle

A

Laterally rotates thigh; steadies femoral head in acetabulum

43
Q

Innervation of quadratis femoris muscle

A

Nerve to quadratus femoris

44
Q

Action of semitendinosus muscle

A

Extend thigh; flex leg and rotate it medially when knee is flexed. Can extend trunk when thigh and leg are flexed.

45
Q

Innervation of semitendinosus muscle

A

Tibial division of sciatic nerve

46
Q

Action of semimembranosus muscle

A

Extend thigh; flex leg and rotate it medially when knee is flexed. Can extend trunk when thigh and leg are flexed.

47
Q

Innervation of semimembranosus muscle

A

Tibial division of sciatic nerve

48
Q

Action of biceps femoris muscle long head

A

Flexes leg and rotates it laterally when knee is flexed; extends thigh

49
Q

Innervation of biceps femoris muscle long head

A

Tibial division of sciatic nerve

50
Q

Action of biceps femoris muscle short head

A

Flexes leg and rotates it laterally when knee is flexed

51
Q

Innervation of biceps femoris muscle short head

A

Common fibular division of sciatic nerve

52
Q

Muscle(s) innervated by inferior gluteal nerve

A

Gluteus maximus

53
Q

Muscle(s) innervated by superior gluteal nerve

A

Gluteus medius, Gluteus minimus, Tensor fasciae latae

54
Q

Muscle(s) innervated by nerve to obturator internus

A

Obturator internus, Gemellus superior

55
Q

Muscle(s) innervated by nerve to quadratus femoris

A

Quadratus femoris, Gemellus inferior

56
Q

Muscle(s) innervated by tibial divsion of sciatic nerve

A

Semitendinosus, Semimembranosus, Biceps femoris long head

57
Q

Muscle(s) innervated by common fibular division of sciatic nerve

A

Biceps femoris short head

58
Q

Posterior thigh and gluteal muscles that act in lateral rotation of the thigh (6)

A

Gluteus maximus, Piriformis, Obturator internus, Gemellus superior, Gemellus inferior, Quadratus femoris

59
Q

Posterior thigh and gluteal muscles that act in medial rotation (5)

A

Gluteus medius, Gluteus minimus, Tensor fasciae latae, Semitendinosus, Semimembranosus

60
Q

Posterior thigh and gluteal muscles that act in abduction of the thigh (7)

A

Gluteus medius, Gluteus minimus, Tensor fasciae latae, Piriformis, Obturator internus, Gemellus superior, Gemellus inferior