Accessory obturator nerve: Difference between revisions
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== Accessory | ==Accessory obturator nerve== | ||
The '''accessory obturator nerve''' is a nerve in the human body that is present in approximately 10% of the population. It is considered an anatomical variant and | The '''accessory obturator nerve''' is a nerve in the [[human body]] that is present in approximately 10% of the population. It is considered an anatomical variant and is part of the [[lumbar plexus]]. | ||
== Anatomy == | ==Anatomy== | ||
The accessory obturator nerve arises from the ventral divisions of the third and fourth lumbar nerves (L3 and L4). It is a branch of the lumbar plexus, which is | The accessory obturator nerve arises from the ventral divisions of the third and fourth [[lumbar nerves]] (L3 and L4). It is a branch of the lumbar plexus, which is a network of nerves in the lower back that supplies the lower limb. | ||
The nerve descends along the medial border of the [[psoas major muscle]], and it passes over the superior pubic ramus. It then enters the thigh, where it supplies the [[pectineus muscle]]. | |||
== Function == | ==Function== | ||
The accessory obturator nerve | The primary function of the accessory obturator nerve is to innervate the pectineus muscle, which is involved in [[hip flexion]] and [[adduction]]. In some cases, it may also provide sensory innervation to the [[hip joint]] and the [[medial thigh]]. | ||
== Clinical | ==Clinical significance== | ||
The presence of the accessory obturator nerve can have clinical implications, particularly in surgical procedures involving the pelvis | The presence of the accessory obturator nerve can have clinical implications, particularly in surgical procedures involving the [[pelvis]] or [[hip joint]]. Surgeons must be aware of its possible presence to avoid inadvertent injury during operations such as [[hip replacement surgery]]. | ||
In | In cases where the accessory obturator nerve is present, it may contribute to the innervation of the hip joint, and its injury could lead to sensory deficits or weakness in the medial thigh. | ||
== Related | ==Related pages== | ||
* [[Lumbar plexus]] | * [[Lumbar plexus]] | ||
* [[Obturator nerve]] | * [[Obturator nerve]] | ||
* [[Pectineus muscle]] | * [[Pectineus muscle]] | ||
* [[ | * [[Hip joint]] | ||
==Gallery== | |||
<gallery> | <gallery> | ||
File:Gray822.png|Diagram of the lumbar plexus with the accessory obturator nerve. | File:Gray822.png|Diagram of the lumbar plexus with the accessory obturator nerve. | ||
File:Gray823.png|The | File:Gray823.png|The accessory obturator nerve in relation to the psoas major muscle. | ||
</gallery> | </gallery> | ||
[[Category:Peripheral nervous system]] | [[Category:Peripheral nervous system]] | ||
[[Category:Anatomy]] | [[Category:Anatomy]] | ||
Revision as of 21:22, 11 February 2025
Accessory obturator nerve
The accessory obturator nerve is a nerve in the human body that is present in approximately 10% of the population. It is considered an anatomical variant and is part of the lumbar plexus.
Anatomy
The accessory obturator nerve arises from the ventral divisions of the third and fourth lumbar nerves (L3 and L4). It is a branch of the lumbar plexus, which is a network of nerves in the lower back that supplies the lower limb.
The nerve descends along the medial border of the psoas major muscle, and it passes over the superior pubic ramus. It then enters the thigh, where it supplies the pectineus muscle.
Function
The primary function of the accessory obturator nerve is to innervate the pectineus muscle, which is involved in hip flexion and adduction. In some cases, it may also provide sensory innervation to the hip joint and the medial thigh.
Clinical significance
The presence of the accessory obturator nerve can have clinical implications, particularly in surgical procedures involving the pelvis or hip joint. Surgeons must be aware of its possible presence to avoid inadvertent injury during operations such as hip replacement surgery.
In cases where the accessory obturator nerve is present, it may contribute to the innervation of the hip joint, and its injury could lead to sensory deficits or weakness in the medial thigh.
Related pages
Gallery
-
Diagram of the lumbar plexus with the accessory obturator nerve. -
The accessory obturator nerve in relation to the psoas major muscle.
