関: quadriceps femoris、quadriceps muscle、rectus femoris、vastus lateralis、vastus medialis

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『広大な』,広範囲な / (数・量・程度などにおいて)ものすごい,ばく大な

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/02/08 02:55:04」(JST)

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The vastus intermedius (/ˈvæstəs ˌɪntərˈmiːdi.əs/) (Cruraeus) arises from the front and lateral surfaces of the body of the femur in its upper two-thirds, sitting under the rectus femoris muscle and from the lower part of the lateral intermuscular septum. Its fibers end in a superficial aponeurosis, which forms the deep part of the quadriceps femoris tendon.

The vastus medialis and vastus intermedius appear to be inseparably united, but when the rectus femoris has been reflected^{[when defined as?]} a narrow interval will be observed extending upward from the medial border of the patella between the two muscles, and the separation may be continued as far as the lower part of the intertrochanteric line, where, however, the two muscles are frequently continuous.

Due to being the deeper middle-most of the quadriceps muscle group, the intermedius is the most difficult to stretch once maximum knee flexion is attained. It cannot be further stretched by hip extension as the rectus femoris can, nor is it accessible to manipulate with massage therapy to stretch the fibres sideways as the vastus lateralis and vastus medialis are.

Additional images

Right femur. Anterior surface.
Right femur. Posterior surface.
Muscles of the iliac and anterior femoral regions.
Cross-section through the middle of the thigh.
Cross section through thigh.
Vastus intermedius muscle
Vastus intermedius muscle
Muscles of thigh. Cross section.
Muscles of Thigh. Anterior views.

References

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

External links

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UpToDate Contents

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English Journal

Association between retinal vasculature and muscle mass in older people.

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Late-onset Becker muscular dystrophy: Refining the clinical features and electrophysiological findings.

Beltran Papsdorf T1, Howard JF Jr1, Chahin N1.
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EMG spectral differences among the quadriceps femoris during the stretch reflex.

Beck TW1, Simmons JL1, Defreitas JM2.
Muscle & nerve.Muscle Nerve.2015 Nov;52(5):826-31. doi: 10.1002/mus.24625. Epub 2015 Sep 3.
INTRODUCTION: The purpose of this study was to examine the electromyographic (EMG) spectral characteristics of the quadriceps femoris muscles during tendon tap stretch reflexes.METHODS: Sixteen healthy subjects (mean ± SD age = 21.2 ± 2.8 years) performed tendon tap reflexes of the leg
PMID 25728166

Japanese Journal

野球投手の身体における深層筋と浅層筋の形態的特性 (創立50周年記念号)

九州共立大学研究紀要 = Study journal of Kyushu Kyoritsu University 6(1), 57-62, 2015
NAID 120005772444

若年女性の下肢筋力と中間広筋厚の関連および握力の測定意義

ヘルスプロモーション理学療法研究 = Japanese journal of health promotion and physical therapy 3(4), 173-176, 2014-01
NAID 40019960386

The Relationship between Quadriceps Thickness, Radiological Staging, and Clinical Parameters in Knee Osteoarthritis

Journal of Physical Therapy Science 26(6), 931-936, 2014
NAID 130004432159

Related Pictures

★リンクテーブル★

リンク元	「中間広筋」「vastus lateralis」「quadriceps muscle」「rectus femoris」「vastus medialis」
関連記事	「vast」「intermedius」

「中間広筋」

Vastus intermedius muscle
	Muscles of lower extremity
Details
Origin	Anterolateral femur
Insertion	Quadriceps tendon
Artery	Femoral artery
Nerve	Femoral nerve
Actions	Extension of knee joint
Identifiers
Latin	Musculus vastus intermedius
TA	A04.7.02.022
FMA	22433
	Anatomical terms of muscle [edit on Wikidata]