Vastus Medialis Oblique
Original Editor - Rafet Irmak
Top Contributors - Admin, Ananya Bunglae Sudindar, Rafet Irmak, George Prudden, Wendy Snyders, Richard Benes, Kim Jackson, Evan Thomas, WikiSysop and Claudia Karina
Description[edit | edit source]
Vastus medialis is one of the four muscles that make up the quadriceps group of muscles. Proximally it arises from the upper part of the femoral shaft and distally its flattened tendon joins the quadriceps femoris tendon, and inserts into the upper border of the patella.[1]
Origin[edit | edit source]
Lower part of the intertrochanteric line, along the spiral line to the medial lip of the linea aspera, the medial intermuscular septum and the aponeurosis of adductor magnus.[1]
Insertion[edit | edit source]
Into the medial side of the quadriceps tendon, joining with rectus femoris and the other vasti muscles, enveloping the patella, then by the patellar ligament into the tibial tuberosity.[1]
Nerve[edit | edit source]
A branch from the posterior division of the femoral nerve, derived from L2, 3 and 4.[1]
Artery[edit | edit source]
Femoral artery and branches from the profunda femoris artery.[1]
Function[edit | edit source]
Vastus medialis, together with the other muscles that make up quadriceps femoris, extends the knee joint.[1]
Clinical relevance[edit | edit source]
Weakness of the vastus medials is associated with patellar maltracking and patellofemoral pain. Treatment should include restoring balance between vastus medialis and lateralis, which often requires strengthening of the oblique fibers of medialis, as well as assessment of the degree of dynamic supination and pronation of the foot.
Assessment[edit | edit source]
Palpation[edit | edit source]
It can be palpated along its entire length. Distally, the quadriceps tendon can be palpated attaching to the proximal border (base) of the patella.
Treatment[edit | edit source]
Resources[edit | edit source]
- Smith TO, Nichols R, Harle D, Donell ST. Do the vastus medialis obliquus and vastus medialis longus really exist? A systematic review. Clin Anat. 2009 Mar;22(2):183-99.
- Pattyn E, Verdonk P, Steyaert A, Vanden Bossche L, Van den Broecke W, Thijs Y, Witvrouw E. Vastus medialis obliquus atrophy: does it exist in patellofemoral pain syndrome? Am J Sports Med. 2011 Jul;39(7):1450-5. Epub 2011 Apr 12.
- Günal I, Araç S, Sahinoğlu K, Birvar K. The innervation of vastus medialis obliquus. J Bone Joint Surg Br. 1992 Jul;74(4):624.
- Holt G, Nunn T, Allen RA, Forrester AW, Gregori A. Variation of the vastus medialis obliquus insertion and its relevance to minimally invasive total knee arthroplasty. J Arthroplasty. 2008 Jun;23(4):600-4. Epub 2008 Mar 4.
- Lin YF, Lin JJ, Cheng CK, Lin DH, Jan MH. Association between sonographic morphology of vastus medialis obliquus and patellar alignment in patients with patellofemoral pain syndrome. J Orthop Sports Phys Ther. 2008 Apr;38(4):196-202. Epub 2007 Nov 21
