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The quadratus femoris is a flat, quadrilateral skeletal muscle. Located on the posterior side of the hip joint, it is a strong external rotator and adductor of the thigh,^[2] but also acts to stabilize the femoral head in the Acetabulum.

CourseEdit

It originates on the lateral border of the ischial tuberosity of the ischium of the pelvis.^[1] From there, it passes laterally to its insertion on the posterior side of the head of the femur: the quadrate tubercle on the intertrochanteric crest and along the quadrate line, the vertical line which runs downward to bisect the lesser trochanter on the medial side of the femur. Along its course, quadratus is aligned edge to edge with the inferior gemellus above and the adductor magnus below, so that its upper and lower borders run horizontal and parallel.^[3]

At its origin, the upper margin of the adductor magnus is separated from it by the terminal branches of the medial femoral circumflex vessels.

A bursa is often found between the front of this muscle and the lesser trochanter. Sometimes absent.

Quadratus femoris muscle

Additional imagesEdit

Right femur. Posterior surface.
Structures surrounding right hip-joint.
Nerves of the right lower extremity Posterior view.
Quadratus femoris muscle
Muscles of Thigh. Anterior views.

NotesEdit

^ ^a ^b Thieme Atlas of Anatomy (2006), p 424
^ Platzer (2004), p 238
^ Mcminn (2003), p 166

ReferencesEdit

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

Mcminn, R.M.H. (2003). Last's Anatomy Regional and Applied. Elsevier Australia. ISBN 0-7295-3752-8.
Platzer, Werner (2004). Color Atlas of Human Anatomy, Vol 1: Locomotor system (5th ed.). Thieme. ISBN 3-13-533305-1. (ISBN for the Americas 1-58890-159-9.)
Thieme Atlas of Anatomy. Thieme. 2006. ISBN 978-1-60406-062-1.

External linksEdit

147849294 at GPnotebook
PTCentral
Anatomy photo:13:st-0409 at the SUNY Downstate Medical Center

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UpToDate Contents

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English Journal

Ultrasound-guided Sciatic Nerve Block in Overweight and Obese Patients: A Randomized Comparison of Performance Time Between the Infragluteal and Subgluteal Space Techniques.

Abdallah FW, Chan VW, Koshkin A, Abbas S, Brull R.SourceFrom the * Department of Anesthesia, St Michael's Hospital; and † Department of Anesthesia, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada.
Regional anesthesia and pain medicine.Reg Anesth Pain Med.2013 Nov-Dec;38(6):547-52. doi: 10.1097/AAP.0000000000000016.
BACKGROUND AND OBJECTIVES: Despite ultrasound (US) guidance, sciatic nerve block (SNB) remains among the least performed peripheral blocks. By targeting the tissue plane between the gluteus maximus and quadratus femoris muscles, the US-guided subgluteal space technique may facilitate the performance
PMID 24121610

Ultrasound-guided perineural steroid injection to treat intractable pain due to sciatic nerve injury.

Wang JC, Chiou HJ, Lu JH, Hsu YC, Chan RC, Yang TF.SourceDepartment of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital, No. 201, Section 2, Shih-Pai Road, Beitou District, Taipei, 11217, Taiwan, ROC.
Canadian journal of anaesthesia = Journal canadien d'anesthésie.Can J Anaesth.2013 Sep;60(9):902-6. doi: 10.1007/s12630-013-9987-6. Epub 2013 Jun 27.
PURPOSE: Sciatic neuropathy is a rare but serious complication of cardiac surgery. Neuropathic pain following nerve injury can be severely debilitating and largely resistant to treatment. We present a case of this complication where ultrasound-guided perineural steroid injection at the site of the s
PMID 23807495

Non-femoroacetabular impingement.

Blankenbaker DG, Tuite MJ.SourceDepartment of Radiology, Clinical Science Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792-3252, USA. dblankenbaker@uwhealth.org
Seminars in musculoskeletal radiology.Semin Musculoskelet Radiol.2013 Jul;17(3):279-85. doi: 10.1055/s-0033-1348094. Epub 2013 Jun 20.
Femoroacetabular impingement is one of the causes of hip pain leading to acetabular labral tears and cartilage damage that may lead to the development of early osteoarthritis. More recently other causes of impingement have been recognized that may be the culprit for the painful hip. These causes inc
PMID 23787982

Japanese Journal

大腿骨頭回転骨切り術における栄養血管血流と術後肢位

末永英慈,野口康男,神宮司誠也,首藤敏秀,中島康晴,山本卓明,宮西圭太,岩本幸英
整形外科と災害外科 49(3), 951-956, 2000-09-25
… After rotating femoral head, the nutritional artery was checked by using ultrasound sonography in fibrofatty tissue beneath divided quadratus femoris muscles and the blood flow was continuously measured while decreasing the angle of hip flexion. …
NAID 10010026490

大腿方形筋の欠損を認めた両特発性大腿骨頭壊死の1例

浦上泰英,野口康男,神宮司誠也,首藤敏秀,中島康晴,岩本幸英
Hip joint 25, 240-242, 1999-10-25
NAID 10009326724

A Variant of the First Perforating Artery Passing Immediately below the Quadratus Femoris : a Case Report and a Study of the Territorial Relationship between the Perforating Artery and the Descending Branch of the Medial Circumfiexus Femoral Artery

Imai Tomoyuki,Murakami Gen
1998-12-01
… The authors encountered an anatomical variant in which the first perforating artery (FPA) emerged posteriorly immediately below the quadratus femoris muscle. …
NAID 120001797029

「大腿方形筋」

Quadratus femoris muscle
	The quadratus femoris and nearby muscles
	Muscles of the gluteal and posterior femoral regions with quadratus femoris muscle highlighted
Details
Origin	Ischial tuberosity
Insertion	Intertrochanteric crest
Artery	Inferior gluteal artery
Nerve	Nerve to quadratus femoris (L4-S1)
Actions	lateral rotation and adduction of thigh
Identifiers
Latin	musculus quadratus femoris
Dorlands; /Elsevier	m_22/12550374
TA	A04.7.02.015
FMA	22321
	Anatomical terms of muscle [edit on Wikidata]