The quadriceps refers to a group of four muscles located in the front of the thigh. These muscles include the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius. Collectively, the quadriceps play a vital role in extending the leg at the knee joint and are essential for activities such as walking, running, jumping, and climbing stairs. They are among the strongest muscles in the body and contribute to overall lower limb strength and stability. The quadriceps also help stabilize the patella (kneecap) and assist in maintaining proper alignment of the leg during movement. Their well-developed and conditioned state is often associated with athletic performance and functional mobility.

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