vastus medialis


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vastus medialis

(mē′dē-ā′lĭs, -ăl′ĭs)
n.
A muscle with origin from the shaft of the femur, with insertion into the tibial tuberosity, with nerve supply from the femoral nerve, and whose action extends the leg.
References in periodicals archive ?
Comparison of vastus medialis obliquus: vastus lateralis muscle integrated electromyographic ratios between healthy subjects and patients with patellofemoral pain.
Rectus femoris and vastus medialis presented mean excitation of 5 and 35% MVIC, respectively.
The results showed excellent reliability for the vastus lateralis (ICC>0.82), vastus medialis (ICC>0.88) and rectus femoris (ICC>0.83) muscles.
Effects of knee joint angles and fatigue on the neuromuscular control of vastus medialis oblique and vastus lateralis muscle in humans.
[1] All these movements are coordinated by the quadriceps muscles, particularly the vastus medialis oblique (VMO) and vastus lateralis.
1: vastus medialis muscle; 2: rectus femoris muscle; 3: vastus lateralis muscle; 4: adductor longus muscle; 5: tibialis anterior muscle; 6: peroneus longus muscle; 7: patellar tendon; 8: pes anserinus bursae; 9: popliteous muscle; 10: iliacus muscle; 11: quadrates lumborum muscle; 12: supraspinous ligaments, area between L5-S1 and S1-S2; 13, 14: extensor digitorum brevis; 15: extensor hallucis longus; 16: flexor halluces longus; C: deltoids.
Usually the rectus femoris maintains its ability to contract and thereby flex the hip, while the vastus medialis is unable to contract and thereby extend the knee.
[1] When compared to individuals with low Q-angle (LQ-angle <15[degrees]), asymptomatic individuals with high Q-angle (HQ-angle [greater than or equal to]15[degrees]) displayed anatomical cross-sectional areas of the vastus medialis and lateralis that were approximately 10% smaller when using the Q-angle as an estimate of quadriceps muscle disorientation.
The electrodes were sited on the following muscles of the dominant extremity mainly focusing on lower body (Figure 1): rectus abdominis (RA), rectus femoris (RF), vastus lateralis (VL), vastus medialis (VM), semitendinosus (ST), biceps femoris (BF), tibialis anterior (TA) and gastrocnemius (GC).
Vastus medialis obliquus (VMO) was advanced & sutured to lateral border of patella & quadriceps, after locating patella in trochlear notch in 70[degrees] flexion.
The graft was passed between the second and third layers of the medial side of a knee by identifying the space between the vastus medialis and the capsule.