Gracilis
起源al Editor- Eric Henderson
Top Contributors-Eric Henderson,Lucinda hampton,Candace Goh,Joao CostaandVidya Acharya
Introduction[edit|edit source]
The gracilis is a spiral unipennatemusclein themedial thigh compartment.
The gracilis:
- Assists with hip adduction, knee flexion, and knee internal rotation.
- It is innervated by the anterior branch of theobturator nerve.
- Crosses at both thehipandkneejoints.
- The gracilis may is prone to strain injuries, resulting inadductor tendinopathyeg common in soccer, hockey, football, and basketball athletes[1].
Anatomy[edit|edit source]
起源
The gracilis muscle originates from the inferior ischiopubic ramus, and body ofpubis.[2]
Insertion
The gracilis muscle decends almost vertically down the leg and inserts on the medialtibiaat thePes anserinus.[2]The pes anserinus is also the attachment site of theSartoriusandSemitendinosus.
Nerve
The gracilis muscles is innervated by the anterior branch of the obturator nerve (L2-L4). The anterior branch of the obturator nerve also innervates the长内收肌, and sometimesadductor brevis.[2]
There are 5 to 7 muscle fiber bundle compartments in the gracilis muscle, with nerve branches coursing along each compartment, indicating possible independentneuromuscularcompartment functioning.[1]
Artery
The gracilis muscle receivesbloodsupply from the medial circumflexfemoral artery.[2]
Image: Gracilis muscle (highlighted in green) - anterior view[3]
Function[edit|edit source]
Due to its attachment on the tibia, the gracilis flexes the knee, adducts the thigh, and medially rotate the tibia on the femur.[4]
Physiotherapy Relevance[edit|edit source]
- Groin strain/adductor tendinopathy commonly occur in high impact sports that involve ballistic movements or stretching eg soccer, hockey, baseball. Tearing of the muscles usually occur at proximal region near bony attachments at the pelvis[5]
- In women, the muscular volume of the medial vastus is greater than in men, while the volume of the gracilis muscle (and the sartorius muscle) is smaller. This predisposes females toACL injurycompared to males.[1]
- Surgeons may use the gracilis tendon in reconstruction surgery of the ACL[1]
- Pes anserine bursitis是一种囊的炎症状态conjo吗ined insertion of the sartorius, gracilis and semitendinosus. Pes anserine bursitis is commonly seen in patients who have obese, have osteoarthritis, and female.[1]
Assessment and Treatment[edit|edit source]
SeeAdductor TendinopathyGroin Injuries
This 1 minute video is titled "Applied Kinesiology - Manual Muscle Testing: Gracilis"
Resources[edit|edit source]
This video from KenHub on anatomy of gracilis.[6]
References[edit|edit source]
- ↑1.01.11.21.31.4Bordoni B, Varacallo M. Anatomy, bony pelvis and lower limb, thigh quadriceps muscle. Available:https://www.statpearls.com/ArticleLibrary/viewarticle/22380(accessed 19.1.2022)
- ↑2.02.12.22.3Marieb EN, Hoehn K. Human anatomy & physiology. 10th ed. Boston, Ma: Pearson; 2016.
- ↑股薄肌(highlighted in green) - anterior view image - © Kenhubhttps://www.kenhub.com/en/library/anatomy/gracilis-muscle
- ↑Gracilis. Available from:https://rad.washington.edu/muscle-atlas/gracilis/(accessed 15 May 2018).
- ↑Teach Me Anatomy. Muscles in the Medial Compartment of the Thigh. Available from:https://teachmeanatomy.info/lower-limb/muscles/thigh/medial-compartment/(Accessed on 19 May 2020)
- ↑Gracilis muscle video - © Kenhubhttps://www.kenhub.com/en/library/anatomy/gracilis-muscle
