Brontekst bekijken van Tensor Vastus Intermedius

'''Tensor vastus intermedius''' is a muscle in the anterior compartment of thigh. It lies between the [[vastus medialis]] and the [[Vastus lateralis muscle|vastus lateralis]]. The structure has been previously reported<ref>{{Cite journal|title = Morphological variations of the human vastus lateralis muscle.|url = http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1256904/|journal = Journal of Anatomy|date = 1990-02-01|issn = 0021-8782|pmc = 1256904|pmid = 2323995|pages = 235–239|volume = 168|first = P L|last = Willan|first2 = M|last2 = Mahon|first3 = J A|last3 = Golland}}</ref><ref>{{Cite journal|url = |title = Anatomical variations in human quadriceps femoris muscles|last = Golland|first = JA|date = 1986|journal = J Anat|doi = |pmid = |access-date = |last2 = Mahon|first2 = M|last3 = Willan|first3 = PL|page = 263-264}}</ref> but has not been described nor illustrated in any textbook.<ref name=":0">{{Cite journal|title = A newly discovered muscle: The tensor of the vastus intermedius|url = http://onlinelibrary.wiley.com/doi/10.1002/ca.22680/abstract|journal = Clinical Anatomy|date = 2016-03-01|issn = 1098-2353|pages = 256–263|volume = 29|issue = 2|doi = 10.1002/ca.22680|language = en|first = K.|last = Grob|first2 = T.|last2 = Ackland|first3 = M.s.|last3 = Kuster|first4 = M.|last4 = Manestar|first5 = L.|last5 = Filgueira}}</ref> The term tensor vastus intermedius was given by Grob et al. in 2016.<ref name=":0">{{Cite journal|title = A newly discovered muscle: The tensor of the vastus intermedius|url = http://onlinelibrary.wiley.com/doi/10.1002/ca.22680/abstract|journal = Clinical Anatomy|date = 2016-03-01|issn = 1098-2353|pages = 256–263|volume = 29|issue = 2|doi = 10.1002/ca.22680|language = en|first = K.|last = Grob|first2 = T.|last2 = Ackland|first3 = M.s.|last3 = Kuster|first4 = M.|last4 = Manestar|first5 = L.|last5 = Filgueira}}</ref>

== Structuur ==
The tensor vastus intermedius muscle originates from the proximal part of [[femur]] specifically from the anterior part of the [[greater trochanter]].<ref name=":0">{{Cite journal|title = A newly discovered muscle: The tensor of the vastus intermedius|url = http://onlinelibrary.wiley.com/doi/10.1002/ca.22680/abstract|journal = Clinical Anatomy|date = 2016-03-01|issn = 1098-2353|pages = 256–263|volume = 29|issue = 2|doi = 10.1002/ca.22680|language = en|first = K.|last = Grob|first2 = T.|last2 = Ackland|first3 = M.s.|last3 = Kuster|first4 = M.|last4 = Manestar|first5 = L.|last5 = Filgueira}}</ref> The muscle lies anterior to the vastus intermedius but deep to the [[Rectus femoris muscle|rectus femoris]].The tendinous part of the muscle is closely related to, and sometimes fuses with, the [[aponeurosis]] of the vastus intermedius. Distally, it joins the [[quadriceps tendon]] and inserts to the medial aspect of the [[patella]].<ref name=":0">{{Cite journal|title = A newly discovered muscle: The tensor of the vastus intermedius|url = http://onlinelibrary.wiley.com/doi/10.1002/ca.22680/abstract|journal = Clinical Anatomy|date = 2016-03-01|issn = 1098-2353|pages = 256–263|volume = 29|issue = 2|doi = 10.1002/ca.22680|language = en|first = K.|last = Grob|first2 = T.|last2 = Ackland|first3 = M.s.|last3 = Kuster|first4 = M.|last4 = Manestar|first5 = L.|last5 = Filgueira}}</ref> It is supplied by the [[femoral nerve]] and the [[lateral circumflex femoral artery]]. 

=== Variaties ===
This muscle is categorised into five types according to morphology: the independent type, VI-type, VL-type, common type and two-belly type.<ref name=":0">{{Cite journal|title = A newly discovered muscle: The tensor of the vastus intermedius|url = http://onlinelibrary.wiley.com/doi/10.1002/ca.22680/abstract|journal = Clinical Anatomy|date = 2016-03-01|issn = 1098-2353|pages = 256–263|volume = 29|issue = 2|doi = 10.1002/ca.22680|language = en|first = K.|last = Grob|first2 = T.|last2 = Ackland|first3 = M.s.|last3 = Kuster|first4 = M.|last4 = Manestar|first5 = L.|last5 = Filgueira}}</ref> The independent type of the tensor vastus intermedius, also the most frequent type, has its tendon lying between the vastus intermedius and the vastus lateralis. For the VI-type and the VL-type, the tendinous part of the muscle is integrated into the fascia of the vastus intermedius and the vastus lateralis respectively. For the common type, it has a non-separable origin between the [[intertrochanteric line]] and greater trochanter. Two separate muscle bellies can be found for the two-belly types.

== Functie ==
The tensor vastus intermedius muscle tenses on the aponeurosis of the vastus intermedius and also medialises the action of the muscle. It also acts as a second tensor in addition to the [[Tensor fasciae latae muscle|tensor fasciae latae]].

== Zie ook ==
* [[musculus quadriceps femoris]] ''(vierhoofdige dijbeenspier)''