Updated: 1/2/2022

Piriformis

0%
Topic
Review Topic
0
0
0%
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Flashcards
5
N/A
N/A
Questions
2
0
0
100%
0%
Evidence
3
0
0
0%
0%
Videos / Pods
3
Topic
Images
https://upload.orthobullets.com/topic/10073/images/obturator-internus.jpg
  • Summary
      • Piriformis
      • Origin
      • Anterior surface of sacrum and gluteal surface of ilium at the margin of the greater sciatic notch
      • Insertion
      • Superior border of greater trochanter
      • Action
      • External rotator of the hip joint; also helps abduct the hip if it is flexed
      • Innervation
      • Piriformis nerve (L5, S1, S2)
      • Arterial supply
      • Superior and inferior gluteal and internal pudendal arteries

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Flashcards (5)
Cards
1 of 5
Questions (2)

(OBQ11.258) Which of the following muscles originates from the ventral surface of the sacrum?

QID: 3681

Obturator internus

15%

(805/5390)

Obturator externus

4%

(233/5390)

Quadratus femoris

5%

(247/5390)

Piriformis

73%

(3954/5390)

Superior gemellus

2%

(123/5390)

L 3 C

Select Answer to see Preferred Response

(OBQ07.16) The inferior and superior gluteal nerves are designated as such based on their relationship to what structure?

QID: 677

The gluteus maximus

3%

(159/5116)

The gluteus minimus

4%

(207/5116)

The piriformis muscle

78%

(3993/5116)

The sciatic nerve

2%

(111/5116)

The sacrospinous ligament

12%

(613/5116)

L 1 C

Select Answer to see Preferred Response

Evidence (3)
VIDEOS & PODCASTS (6)
EXPERT COMMENTS (5)
Private Note