Gracilis: Difference between revisions
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'''Origin''' | '''Origin''' | ||
The gracilis muscle originates from the inferior ischiopubic ramus, and body of pubis.<ref name=":0">Marieb EN, Hoehn K. Human anatomy & physiology. 10th ed. Boston, Ma: Pearson; 2016.</ref> | The gracilis muscle originates from the inferior ischiopubic ramus, and body of [[pubis]].<ref name=":0">Marieb EN, Hoehn K. Human anatomy & physiology. 10th ed. Boston, Ma: Pearson; 2016.</ref> | ||
'''Insertion''' | '''Insertion''' | ||
The gracilis muscle decends almost vertically down the leg and inserts on the medial tibia at the [[Pes Anserinus Bursitis|Pes anserinus]].<ref name=":0" /> The pes anserinus is also the attachment site of the [[Sartorius]] and [[Semitendinosus]]. | The gracilis muscle decends almost vertically down the leg and inserts on the medial [[tibia]] at the [[Pes Anserinus Bursitis|Pes anserinus]].<ref name=":0" /> The pes anserinus is also the attachment site of the [[Sartorius]] and [[Semitendinosus]]. | ||
'''Nerve''' | '''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 adductor longus, and sometimes [[Adductor Brevis|adductor brevis]].<ref name=":0" /> | 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 [[Adductor Longus|adductor longus]], and sometimes [[Adductor Brevis|adductor brevis]].<ref name=":0" /> | ||
There are 5 to 7 muscle fiber bundle compartments in the gracilis muscle, with nerve branches coursing along each compartment, indicating possible independent neuromuscular compartment functioning.<ref name=":2" /> | There are 5 to 7 muscle fiber bundle compartments in the gracilis muscle, with nerve branches coursing along each compartment, indicating possible independent [[Neuromuscular Adaptations to Exercise|neuromuscular]] compartment functioning.<ref name=":2" /> | ||
'''Artery''' | '''Artery''' | ||
The gracilis muscle receives blood supply from the medial circumflex femoral artery.<ref name=":0" /> | The gracilis muscle receives [[Blood Physiology|blood]] supply from the medial circumflex [[Femoral Artery|femoral artery]].<ref name=":0" /> | ||
== Function == | == Function == | ||
Due to | Due to its attachment on the tibia, the gracilis flexes the knee, adducts the thigh, and medially rotate the tibia on the femur.<ref>Gracilis. Available from: https://rad.washington.edu/muscle-atlas/gracilis/ (accessed 15 May 2018). </ref> | ||
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== Physiotherapy Relevance == | == Physiotherapy Relevance == | ||
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== Assessment and Treatment == | == Assessment and Treatment == | ||
See | See [[Adductor Tendinopathy]] [[Groin Strain|Groin Injuries]] | ||
{{#ev:youtube|DVfJW72bEAE}} | {{#ev:youtube|DVfJW72bEAE}} | ||
== Resources == | |||
== Resources | |||
<references /> | <references /> | ||
[[Category:Anatomy]] | [[Category:Anatomy]] | ||
[[Category:Muscles]] | [[Category:Muscles]] | ||
Revision as of 12:53, 19 January 2022
Original Editor - Eric Henderson
Top Contributors - Eric Henderson, Lucinda hampton, Joao Costa, Candace Goh and Vidya Acharya
Introduction[edit | edit source]
The gracilis is a spiral unipennate muscle in the medial thigh compartment.
The gracilis:
- Assists with hip adduction, knee flexion, and knee internal rotation.
- It is innervated by the anterior branch of the obturator nerve.
- Crosses at both the hip and knee joints.
- The gracilis may is prone to strain injuries, resulting in adductor tendinopathyeg common in soccer, hockey, football, and basketball athletes[1].
Anatomy[edit | edit source]
Origin
The gracilis muscle originates from the inferior ischiopubic ramus, and body of pubis.[2]
Insertion
The gracilis muscle decends almost vertically down the leg and inserts on the medial tibia at the Pes anserinus.[2] The pes anserinus is also the attachment site of the Sartorius and Semitendinosus.
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 adductor longus, and sometimes adductor brevis.[2]
There are 5 to 7 muscle fiber bundle compartments in the gracilis muscle, with nerve branches coursing along each compartment, indicating possible independent neuromuscular compartment functioning.[1]
Artery
The gracilis muscle receives blood supply from the medial circumflex femoral artery.[2]
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.[3]
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[4]
- 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 to ACL injury compared to males.[1]
- Surgeons may use the gracilis tendon in reconstruction surgery of the ACL[1]
- Pes anserine bursitis is an inflammatory condition of bursa of the conjoined 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]
See Adductor Tendinopathy Groin Injuries
Resources[edit | edit source]
- ↑ 1.0 1.1 1.2 1.3 1.4 Bordoni B, Varacallo M. Anatomy, bony pelvis and lower limb, thigh quadriceps muscle. Available:https://www.statpearls.com/ArticleLibrary/viewarticle/22380 (accessed 19.1.2022)
- ↑ 2.0 2.1 2.2 2.3 Marieb EN, Hoehn K. Human anatomy & physiology. 10th ed. Boston, Ma: Pearson; 2016.
- ↑ 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)
