Quadrizepsmuskeln

The quadriceps femoris, commonly known as the quadriceps or quads, is a large muscle group located in the front of the thigh. It is composed of four distinct muscles: the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius. These muscles originate from the femur and the pelvis and converge to insert onto the patella (kneecap), which then attaches to the tibia (shinbone) via the patellar tendon.

The primary function of the quadriceps femoris is the extension of the knee joint, meaning they straighten the leg. This action is crucial for a wide range of movements, including walking, running, jumping, and standing up from a seated position. The rectus femoris also plays a secondary role in flexing the hip joint due to its origin on the pelvis.

These muscles are vital for lower body strength and stability. They are heavily utilized in athletic activities and daily functional movements. Weakness or injury to the quadriceps can significantly impair mobility and affect performance in sports and everyday tasks. The quadriceps are often targeted in strength training programs to enhance athletic power and improve overall leg function.