quadriceps femoris


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quadriceps femoris

[kwod′riseps]
Etymology: L, quattuor, four, caput, head, femur, thigh
the large extensor muscle of the anterior thigh, composed of the rectus femoris, the vastus lateralis, the vastus medialis, and the vastus intermedius. The quadriceps forms a large dense mass covering the front and sides of the femur. Tendons of the four parts of the muscle unite at the distal part of the thigh, forming a single strong tendon that embeds the patella and inserts onto the tibial tuberosity. The muscle functions to extend the leg.
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Quadriceps femoris group of thigh muscles

quadriceps femoris

A large muscle on the anterior surface of the thigh composed of the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius muscles. These muscles are inserted by a common tendon on the tuberosity of the tibia. The quadriceps femoris is an extensor of the leg.
The Q-angle.

quadriceps femoris

(commonly known as quads) muscle group on the front of the thigh comprising lateral, intermediate and medial vasti (all contributing to knee extension, with origin from the shaft of the femur) and rectus femoris (contributing also to hip flexion, by its origin from the ilium of the pelvis). Parts of the vasti are inserted into the top and sides of the patella, and contribute tendinous reinforcements to the joint capsule of the knee. The four muscles converge onto the single quadriceps tendon which spans the front of the knee to be inserted as the patellar tendon (ligament) into the tibial tubercle (tuberosity). See also patella, Q(quadriceps)-angle.

quadriceps femoris

group of hip flexor muscles located on anterior thigh; i.e. vasti (vastus medialis, lateralis and intermedius) and rectus femoris; tendons unite to form quadriceps tendon which contains the patella, and inserts into the tibial tubercle inferior to the anterior aspect of the knee joint; quadriceps femoris muscles are subserved by the femoral nerve and act together to extend the knee and flex the hip joints
References in periodicals archive ?
2001) Effects of reconstruction of the anterior cruciate ligament on voluntary activation of quadriceps femoris.
Horton MG, and Terry LH, 1989, Quadriceps femoris muscle angle: normal values and relationships with gender and selected skeletal measures.
Neptune RR, Kautz SA, Zajac FE also stated the quadriceps femoris work in backward pedaling.
The authors used 2 different graft types (hamstring and patellar tendon), there were more female patients in the strength training group than in the neuromuscular training group, and they only included patients that could walk without crutches, had full ROM, had no quadriceps femoris muscle lag, and had minimal joint effusion.
Las perdidas por coccion fueron menores en los musculos Infraspinatus, Longissimus thoracis y mayores en los musculos Supraspinatus, Triceps brachii, Gluteus medius, Semimembranosus, Semitendinosus, Quadriceps femoris y Biceps femoris (Cuadro 2, p < 0.
Angle- and gender-specific quadriceps femoris muscle recruitment and knee extensor torque.
However, operative mobilization of the joint not always brings satisfaction to patient and surgeon as increasing of mobility is often small, operation leads to greater weakening of quadriceps femoris muscle, there is danger of loss of the full active extension with breach of the joint stability.
Influence of contraction intensity, muscle, and gender on median frequency of the quadriceps femoris // Journal of Applied Physiology.
Eight months after the initial lesion, surgical treatment was performed to transfer the femoral biceps to the anterior rectus of the quadriceps femoris muscle using a lateral approach (Figure 2).
Lewek MD, Rudolph KS, Snyder-Mackler L (2004) Quadriceps femoris muscle weakness and activation failure in patients with symptomatic knee osteoarthritis.