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'''Vastus Medialis'''
{{Short description|Muscle in the human body}}
{{Use dmy dates|date=October 2023}}


The '''Vastus Medialis''' is one of the four muscles in the [[Quadriceps muscle|quadriceps group]], located in the [[Human leg|leg]]. It is the most medial, or inner, of the quadriceps muscles. The Vastus Medialis originates from the lower part of the [[Femur|femur]], and attaches to the [[Patella|patella]] via the [[Quadriceps tendon|quadriceps tendon]].
==Vastus medialis==
The '''vastus medialis''' is a muscle located in the anterior compartment of the [[thigh]]. It is one of the four muscles that make up the [[quadriceps femoris]] muscle group. The vastus medialis is situated medially in the thigh and is responsible for extending the [[knee joint]].


== Anatomy ==
==Anatomy==
The vastus medialis originates from the [[intertrochanteric line]] and the medial lip of the [[linea aspera]] of the [[femur]]. It inserts into the [[quadriceps tendon]], which attaches to the [[patella]], and continues as the [[patellar ligament]] to the [[tibial tuberosity]].


The Vastus Medialis is located medially in the thigh and extends to the medial border of the patella. It originates from a continuous line of attachment on the femur, which begins on the front and middle side (anteromedially) on the intertrochanteric line of the femur. It also extends down and back (posteriorly) on the medial lip of the linea aspera and to the medial supracondylar line of the femur. The fibers converge onto the medial part of the quadriceps tendon and the medial border of the patella.
===Structure===
The vastus medialis is divided into two parts: the vastus medialis longus (VML) and the vastus medialis oblique (VMO). The VMO is particularly important for stabilizing the patella and is often targeted in rehabilitation exercises for [[patellofemoral pain syndrome]].


== Function ==
==Function==
The primary function of the vastus medialis is to extend the knee. It plays a crucial role in activities such as walking, running, and jumping. The VMO component is also important for maintaining proper alignment of the patella during knee extension.


The primary function of the Vastus Medialis is to extend the [[Knee|knee]]. It also plays a role in stabilizing the patella and tracking it during knee flexion and extension.
==Clinical significance==
Weakness or dysfunction of the vastus medialis, particularly the VMO, can lead to [[patellar tracking disorder]]s and [[knee pain]]. Strengthening exercises targeting the vastus medialis are often prescribed in physical therapy to address these issues.


== Clinical significance ==
==Images==
<gallery>
File:Gray245.png|Diagram of the quadriceps muscle group.
File:Vastus_medialis_muscle.png|Location of the vastus medialis.
File:Gray550.png|Muscles of the thigh.
File:Anatomical_dissection2.JPG|Anatomical dissection showing the vastus medialis.
File:Slide8rrr.JPG|Cross-section of the thigh showing the vastus medialis.
File:Slide6www.JPG|Detailed view of the vastus medialis.
File:Slide5CCCC.JPG|Vastus medialis in relation to other thigh muscles.
File:Slide5FFFFF.JPG|Vastus medialis and surrounding structures.
File:Slide10WWWW.JPG|Vastus medialis in a dissected specimen.
File:Slide2EA.JPG|Vastus medialis in a cadaveric specimen.
</gallery>


Weakness or dysfunction of the Vastus Medialis, and particularly its most distal segment, can potentially lead to [[Patellofemoral pain syndrome|patellofemoral pain syndrome]] (PFPS) or dislocation of the patella. Exercises that target the Vastus Medialis, such as the [[Leg extension|leg extension]], are often prescribed for treating PFPS.
==Related pages==
* [[Quadriceps femoris]]
* [[Knee joint]]
* [[Patellar tracking disorder]]


== See also ==
==References==
* [[Vastus intermedius]]
* Moore, K. L., Dalley, A. F., & Agur, A. M. R. (2013). ''Clinically Oriented Anatomy''. Lippincott Williams & Wilkins.
* [[Vastus lateralis]]
* Neumann, D. A. (2010). ''Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation''. Elsevier Health Sciences.
* [[Rectus femoris muscle]]
 
== References ==
<references />


[[Category:Muscles of the lower limb]]
[[Category:Muscles of the lower limb]]
[[Category:Hip muscles]]
[[Category:Thigh muscles]]
{{Muscles of lower limb}}
{{stub}}

Revision as of 00:44, 10 February 2025

Muscle in the human body



Vastus medialis

The vastus medialis is a muscle located in the anterior compartment of the thigh. It is one of the four muscles that make up the quadriceps femoris muscle group. The vastus medialis is situated medially in the thigh and is responsible for extending the knee joint.

Anatomy

The vastus medialis originates from the intertrochanteric line and the medial lip of the linea aspera of the femur. It inserts into the quadriceps tendon, which attaches to the patella, and continues as the patellar ligament to the tibial tuberosity.

Structure

The vastus medialis is divided into two parts: the vastus medialis longus (VML) and the vastus medialis oblique (VMO). The VMO is particularly important for stabilizing the patella and is often targeted in rehabilitation exercises for patellofemoral pain syndrome.

Function

The primary function of the vastus medialis is to extend the knee. It plays a crucial role in activities such as walking, running, and jumping. The VMO component is also important for maintaining proper alignment of the patella during knee extension.

Clinical significance

Weakness or dysfunction of the vastus medialis, particularly the VMO, can lead to patellar tracking disorders and knee pain. Strengthening exercises targeting the vastus medialis are often prescribed in physical therapy to address these issues.

Images

  • Diagram of the quadriceps muscle group.
    Diagram of the quadriceps muscle group.
  • Location of the vastus medialis.
    Location of the vastus medialis.
  • Muscles of the thigh.
    Muscles of the thigh.
  • Anatomical dissection showing the vastus medialis.
    Anatomical dissection showing the vastus medialis.
  • Cross-section of the thigh showing the vastus medialis.
    Cross-section of the thigh showing the vastus medialis.
  • Detailed view of the vastus medialis.
    Detailed view of the vastus medialis.
  • Vastus medialis in relation to other thigh muscles.
    Vastus medialis in relation to other thigh muscles.
  • Vastus medialis and surrounding structures.
    Vastus medialis and surrounding structures.
  • Vastus medialis in a dissected specimen.
    Vastus medialis in a dissected specimen.
  • Vastus medialis in a cadaveric specimen.
    Vastus medialis in a cadaveric specimen.

Related pages

References

  • Moore, K. L., Dalley, A. F., & Agur, A. M. R. (2013). Clinically Oriented Anatomy. Lippincott Williams & Wilkins.
  • Neumann, D. A. (2010). Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. Elsevier Health Sciences.
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