Piriforme Ir para: navegação, pesquisa

Anatomy^[1]

Origin

• Anterior aspect of the sacrum at the level of about S2 through S4
• Sacrotuberous ligament
• Periphery of the greater sciatic notch

Insertion

• Superior and medial aspects of the greater trochanter.

Nerve

Artery

• The arterial supply is from the inferior gluteal, superior gluteal and internal pudendal arteries, all branches of the internal iliac artery^[2].

Function^[1][3]

• Lateral Rotation of the hip when it is extended (that is when in standing).
• Abduction of the hip when it is flexed.
• Aids slightly in tilting pelvis laterally.
• Also aids in tilting pelvis posteriorly by pulling the sacrum down towards the thigh^[4].

Clinical relevance

The piriformis muscle can be used to locate the sciatic nerve. This nerve enters the gluteal region inferiorly to the piriformis. If the lateral rotators of the hip are tight they may exert pressure on the sciatic nerve, producing pain radiating into the lower extremity.^[1][5] This is known as [5]

Assessment

Palpation

It may be palpable indirectly through the gluteus maximus into the greater sciatic notch.

Test

Treatment

Strengthening

[6]

Stretching

Manual techniques

^[8]

References

1. ↑ ^1.01.11.21.3 Oatis, C. A., (2009). Kinesiology : the mechanics and pathomechanics of human movement (2nd ed). Baltimore : Lippincott Williams & Wilkins.
2. ↑ Accessed from:↑ Moore, K. L., Dalley, A. F., Agur, A. M. R. (2014). Clinically oriented anatomy (7th ed).Philadelphia : Lippincott Williams & Wilkins.
3. ↑ Kendal, McCreary, Provance; Muscle Testing and Function with Posture and Pain;4th Edition; Piriformis muscle and its relationship to Sciatic Pain; Page No 365.
4. ↑ ^5.05.1 ↑ Robert Kelty Piriformis Strengthening Available fromhttps://www.youtube.com/watch?time_continue=72&v=9Gu7OjxbYKo
   
5. ↑ stoneclinicPT Stretching: Piriformis Stretch Available from ↑ Brent Brookbush Piriformis Static Manual Release (Soft Tissue Mobilization) Available from function gtElInit() { var lib = new google.translate.TranslateService(); lib.setCheckVisibility(false); lib.translatePage('en', 'pt', function (progress, done, error) { if (progress == 100 || done || error) { document.getElementById("gt-dt-spinner").style.display = "none"; } }); }