vastus lateralis

vastus lateralis

(văs′təs lăt′ə-rā′lĭs, -răl′ĭs)
n.
A muscle with origin from the posterior ridge of the femur as far as the greater trochanter, with insertion into the tibia, with nerve supply from the femoral nerve, and whose action extends the leg.

vastus lateralis

the largest of the four muscles of the quadriceps femoris group, situated on the lateral side of the thigh. It is a large, dense mass originating in a broad aponeurosis that is attached to the intertrochanteric line of the femur, the greater trochanter, the lateral lip of the gluteal tuberosity, and the lateral lip of the linea aspera. The fibers of the muscle are gathered to form a strong aponeurosis that converges to become a flat tendon before inserting under the patella and onto the lateral condyle of the tibia. The muscle functions to help extend the leg. Compare rectus femoris, vastus intermedius, vastus medialis. See also quadriceps femoris.
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Vastus lateralis

vastus lateralis

muscle at lateral side of femur; partly fused with vastus intermedius
  • origin lateral side of femur

  • insertion patella, and anterolateral area of knee joint capsule

References in periodicals archive ?
14] Edema and fatty infiltration scores were calculated in the gluteus maximus and thigh muscles (vastus intermedius, vastus medialis, vastus lateralis, rectus femoris, biceps femoris, semitendinosus, semimembranosus, adductor magnus, sartorius, long adductor, and gracilis).
2,3] As a consequence, contrary to common belief, [4,5] the force exerted by an almost equally atrophied vastus lateralis may successfully counteract the lower force exerted on the patella by an atrophied vastus medialis.
1,3,4] Musculus vastus medialis obliquus (VMO) and vastus lateralis are the most important dynamic forces having an effect on patella at the last 30 degrees of the knee extension.
Bipartite patella with an accessory ossification center at the superolateral pole, the insertion site of the vastus lateralis, is a rare congenital anomaly.
Triode electrodes placed on vastus lateralis (VL), gastrocnemius (GN), and gluteus maximus(GM) recorded muscle activity during squats.
The study revealed that polyphenol supplementation reduced interleukin-8 (IL-8) protein content in vastus lateralis muscle tissue after damaging exercise, compared to placebo.
Proximal realignment includes release of tight lateral patellar retinaculum and vastus lateralis completely and plication of medial capsule and patellar retinaculum to strengthen the lax medial structures.
A detailed description about the same EMG measurement protocol as in this study, including skin preparation, electrode placement over the muscles of the vastus lateralis, rectus femoris, BF, and ST, signal amplification, storage in the microcomputer, and sampling of the analog EMG signal was published previously by Sekir et al.
2012) were placed on the following left lower limb muscles: Gluteus Medius, Tensor Fasciae Latae, Rectus Femoris, Vastus medialis, Vastus lateralis, Biceps Femoris, Tibialis Anterior and Gastrocnemius (Lateral Subdivision), and the reference electrode was placed on the left lateral malleolus.
With the patient in the left lateral recumbency, the femur was approached through the craniolateral portal with an incision in the fascia lata and caudal retraction of the biceps femoris muscle as well as cranial retraction of the vastus lateralis.
There were significant increases in T2 signal intensity post-intervention for the gluteus maximus and throughout the muscle portion (proximal, medial, and distal) of the vastus lateralis and rectus femoris.
Results: Isometric maximal peak torque of extension and root mean squared (RMS) of vastus lateralis and medial hamstring in the healthy control was significantly higher than both patient groups.