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 ?
Activity of the quadriceps femoris was calculated as the average responses of the rectus femoris, vastus lateralis, and vastus medialis muscles, whereas the activity of the hamstrings was calculated as the average of the semitendinousus and biceps femoris muscles.
Addressing our first research question, the muscle activity of the quadriceps femoris varied between 18.
Electrical stimulation versus electromyographic biofeedback in the recovery of quadriceps femoris muscle function following anterior cruciate ligament surgery.
Electromyographic biofeedback and recovery of quadriceps femoris muscle function following anterior cruciate ligament reconstruction.
2003) Strength response in human quadriceps femoris muscle during 2 neuromuscular electrical stimulation programs.
05) for cooking loss and shear force of the Psoas major and Quadriceps femoris muscles, moisture, fat, and protein in the lean trim of the forequarter and moisture, fat, ash, and protein in the lean trim of the hindquarter.
Presented in Table 2 are the least squares means and standard errors for cooking loss and shear force of the Psoas major and Quadriceps femoris muscles by beef growth type in pasture and feedlot developed steers.
reported that timed stair-test performance is directly related to functional quadriceps femoris muscle group strength and knee pain among women with knee osteoarthritis (aged 46.
2002b) Possible mechanism of quadriceps femoris weakness in patients with ruptured anterior cruciate ligament.
In this investigation we have examined the reliability of contractile and fatigue characteristics of the quadriceps femoris muscle and their relationship to established physiological markers of cycling endurance.
Thus the objectives of this study were: 1) propose a muscle injury inducing model using maximal eccentric isokinetic exercise with low angular speed; 2) assess the time course of recovery of the quadriceps femoris muscle injured by eccentric exercise with low angular speed, with special attention to functional recovery.