Pectineus Muscle: Difference between revisions

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==Description==
==Introduction==
[[File:Anterior Hip Muscles.png|thumb|Pectinus Muscle]]
The pectineus muscle is a hip adductor, one of a group of five large muscles on the medial thigh. The other hip adductors include the adductor longus, adductor brevis, adductor magnus, and gracilis muscles.


is a flat, quadrangular muscle, situated at the anterior part of the upper and medial aspect of the thigh. The pectineusmuscleis the most anterior dductor of the [[Hip Anatomy|hip]] 3">Mosby's [https://en.wikipedia.org/wiki/Mosby%27s_Medical,_Nursing_%26_Allied_Health_Dictionary Medical,Nursing & Allied Health Dictionary,Fourth Edition,].,1994.
Activities that use thismuscleinclude:running,skating,kicking a soccer ball,playing basketball.,


Itcanbe classifiedinthe medial compartment of thigh(when the function is emphasized)orthe anterior compartment of thigh (when the nerve is emphasized)3" />.
An adductor straincanoccurinthis muscle during sporting activitiesorin a fatigues muscle. Treatment often includes physiotherapy.[[File:前臀部肌肉.png|thumb|Pectinus Muscle]]


==起源==
==Anatomy==
It has the most superior attachmentofall thethighadductors, originating from the pectineal line of pubis onthesuperior pubic ramus. The muscle then slides overthesuperior marginofsuperior pubic ramus and courses posterolaterally down thethigh, sometimes being partially divided into a larger anterior(superficial) layer and smaller posterior (deep)layer. The layers are innervated by different nerves0">Moore,.[https://www.amazon.com/Clinically-Oriented-Anatomy-Keith-Moore/dp/1451119453.Clinically Oriented Anatomy (7th ed).] (2014).
Pectineus can be classified in the medial compartmentof thigh(whenthefunction is emphasized) ortheanterior compartmentof thigh (when the nerve is emphasized)3">Mosby's[https://en.wikipedia.org/wiki/Mosby%27s_Medical,_Nursing_%26_Allied_Health_Dictionary Medical, Nursing & Allied Health Dictionary, Fourth Edition,]., 1994.


== Insetion ==
'''Origin''': pectineal line (pecten pubis) and adjacent bone of pelvis
' ' '插入' ' ':oblique line extending from base of lesser trochanter to linea aspera on posterior surface of femur
'''Action''': adducts and flexes thigh at hip joint
'''Arterial supply''': superficial part by medial circumflex femoral artery and deep part by the anterior branch of obturator arteryRadiopedia [https://radiopaedia.org/articles/pectineus-muscle Pectineus] Available:https://radiopaedia.org/articles/pectineus-muscle (accessed 15.1.2022)
[[File:Pectineus Muscle anatomy.jpg|thumb|fleshy Pectinus]]
[[File:Pectineus Muscle anatomy.jpg|thumb|fleshy Pectinus]]
Pectineus muscle inserts into the posterior surface of femur, along the pectineal line and proximal part of linea aspera.
'''Nerve supply'''
==Nerve supply==
Pectineus is predominately innervated by [[Femoral Nerve|the femoral nerve]] (L2, L3)]. However, in some people pectineus may receive innervation from two separate nerves of the [[Lumbar Plexus|lumber plexus]]Standring,. [https://archive.org/details/graysanatomyanat0000unse/page/518 Gray's Antomy (41tst ed.)]. (2016).


This composite innervation reflects the dual compartmentalisation ofpectineusinto boththe anterior and medialcompartments of thethigh. In these cases the anterior part of the muscle sitsisinnervated by the femoral nerve (L2, L3), a feature of muscles oftheanterior thigh. While the posterior, smaller part of the muscle is supplied by a branch of[[ObturatorNerve|obturatornerve]](L2, L3), the accessory[[Obturator Nerve|obturator nerve]]name=":1"/>.
Thepectineusis considered a transitional muscle betweenthe anteriorthighand medial thigh; thisisdue to innervation mainly fromthe [[FemoralNerve|femoralnerve]]and also sometimes from the[[Obturator Nerve|obturator nerve]].>Glenister R, Sharma S. [https://www.statpearls.com/articlelibrary/viewarticle/32250/ Anatomy, bony pelvis and lower limb, hip.] StatPearls [Internet]. 2021 Jul 26. Available:https://www.statpearls.com/articlelibrary/viewarticle/32250/(accessed 15.1.2022)</ref>


== Blood supply ==
== Blood supply ==
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This surface of pectineus is covered with the deep layer of fascia lata that separates it from the femoral artery, femoral vein and great saphenous vein that course through the femoral triangle.
This surface of pectineus is covered with the deep layer of fascia lata that separates it from the femoral artery, femoral vein and great saphenous vein that course through the femoral triangle.


Posterior to pectineus are the [[Adductor Magnus|adductor magnus]], [[Adductor Brevis|adductor brevis]] and [[Obturator Externus|obturator externus]] muscles, and the anterior branch of [[Obturator Nerve|obturator nerve]].
Posterior to pectineus are the [[Adductor Magnus|adductor magnus]], [[Adductor Brevis|adductor brevis]] and [[Obturator Externus|obturator externus]] muscles, and the anterior branch of [[Obturator Nerve|obturator nerve]].>Moore,. [https://www.amazon.com/Clinically-Oriented-Anatomy-Keith-Moore/dp/1451119453 .Clinically Oriented Anatomy (7th ed).] (2014) >>Standring,. [https://archive.org/details/graysanatomyanat0000unse/page/518 Gray's Antomy (41tst ed.)]. (2016)>


== Action ==
== Action ==

Revision as of 06:22, 15 January 2022

起源al Editor-Abdallah Ahmed Mohamed Top Contributors-Abdallah Ahmed Mohamed,Lucinda hampton,Kim JacksonandVidya Acharya

Introduction[edit|edit source]

The pectineus muscle is a hip adductor, one of a group of five large muscles on the medial thigh. The other hip adductors include the adductor longus, adductor brevis, adductor magnus, and gracilis muscles.

Activities that use this muscle include: running, skating, kicking a soccer ball, playing basketball.,

An adductor strain can occur in this muscle during sporting activities or in a fatigues muscle. Treatment often includes physiotherapy.

Pectinus Muscle

Anatomy[edit|edit source]

Pectineus can be classified in the medial compartment of thigh(when the function is emphasized) or the anterior compartment of thigh (when the nerve is emphasized)[1].

起源: pectineal line (pecten pubis) and adjacent bone of pelvis

Insertion: oblique line extending from base of lesser trochanter to linea aspera on posterior surface of femur

Action: adducts and flexes thigh at hip joint

Arterial supply: superficial part by medial circumflex femoral artery and deep part by the anterior branch of obturator artery[2]

fleshy Pectinus

Nerve supply

耻骨肌被认为是transitional muscle between the anterior thigh and medial thigh; this is due to innervation mainly from thefemoral nerveand also sometimes from theobturator nerve.[3]

Blood supply[edit|edit source]

The superficial part of the muscle is supplied by the medial circumflex femoral artery, a branch of the femoral artery. Deep portion of the muscle is vascularised by the anterior branch of obturator artery, itself a branch of the internal iliac artery.

Relation[edit|edit source]

The muscle lies in the frontal plane and medially to,adductor longus. While laterally, it is related to thepsoas majormuscle and the medial circumflex femoral artery and vein.

The anterior surface of pectineus forms the medial part of the floor of femoral traingle together with adductor longus.

This surface of pectineus is covered with the deep layer of fascia lata that separates it from the femoral artery, femoral vein and great saphenous vein that course through the femoral triangle.

Posterior to pectineus are theadductor magnus,adductor brevisandobturator externusmuscles, and the anterior branch ofobturator nerve.[4][5]

Action[edit|edit source]

Due to the course of its fibers, pectineus both flexes and adducts the thigh at thehip joint当它收缩。当下肢在一个natomical position, contraction of the muscle first causes flexion to occur at the hip joint. This flexion can go as far as the thigh being at a 45 degree angle to the hip joint[6].

At that point, the angulation of the fibers is such that the contracted muscle fibers now pull the thigh towards the midline, producing thigh adduction[6].

Injury[edit|edit source]

The pectineus muscle can become injured by overstretching; specifically, by stretching a leg or legs too far out to the side or front of the body. Pectineus injuries can also be caused by rapid movements like kicking or sprinting, changing directions too quickly while running, or even by sitting with a leg crossed for too long.[5]

Symptoms of the injury[edit|edit source]

The most common symptom of an injured pectineus muscle ispain. Other may include bruising,swelling,tenderness and stiffness[4].

Treatment[edit|edit source]

Treatment of pectinus muscle injury is ask patient to protect the injured from movements and objects that might cause further injury; minimize activities that use the pectinus muscle, like walking and running, in order to allow the muscle time toheal; and ice the injury to decrease and prevent swelling, as well as help decrease any pain.icing shouhd be performed 15:20 minutes every few hours[4].

References[edit|edit source]

  1. ↑Mosby'sMedical, Nursing & Allied Health Dictionary, Fourth Edition,., 1994
  2. ↑RadiopediaPectineusAvailable:https://radiopaedia.org/articles/pectineus-muscle(accessed 15.1.2022)
  3. ↑Glenister R, Sharma S.Anatomy, bony pelvis and lower limb, hip.StatPearls [Internet]. 2021 Jul 26. Available:https://www.statpearls.com/articlelibrary/viewarticle/32250/(accessed 15.1.2022)
  4. ↑4.04.14.2Moore,..Clinically Oriented Anatomy (7th ed).(2014)
  5. ↑5.05.1Standring,.Gray's Antomy (41tst ed.). (2016)
  6. ↑6.06.1Palastanga,. .Anatomy and human movement: structure and function (6th ed.).(2012)
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