Additionally, it works alongside the ilipsoas and sartorius muscles to flex the thigh at the hip joint. During gait, as a hip flexor, it acts with the iliopsoas in toe off phase, The rectus femoris, which helps you extend your knee or flex your thigh, attaches from the pelvis to just below the knee joint (the patellar tendon)
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The rectus femoris muscle is one of the four quadriceps muscles.
The rectus femoris is one of the four quadriceps muscles located in the anterior compartment of the thigh
It is unique among the quadriceps as it crosses both the hip and knee joints, allowing it to participate in hip flexion and knee extension. Aside from extending the knee, the rectus femoris muscle exhibits additional actions since it crosses both the hip and knee joints By acting on the hip joint, it helps with thigh flexion. The rectus femoris muscle is one of the four quadriceps situated in the front of the thigh
It is unique among the quadriceps as it crosses both the hip and knee joints, making it a biarticular muscle. The rectus femoris flexes the hip along with the sartorius and iliopsoas and extends the knee as part of the quadriceps femoris This superficial muscle antagonizes the hamstrings at the knee and hip. Its functions are to flex the thigh at the hip joint and to extend the leg at the knee joint
[1] it arises by two tendons
One, the anterior or straight, from the anterior inferior iliac spine The other, the posterior or reflected, from a groove above the rim of the acetabulum. The rectus femoris is a muscle in the anterior compartment of the thigh It forms part of the quadriceps femoris muscle complex, and is the only muscle in this group to cross both the hip joint and the knee joints.
Rectus femoris acts with iliopsoas to produce hip flexion especially if the knee is flexed [2]
