
The quadriceps (or quad muscles) are a group of four muscles located in the front of the thigh. These muscles—vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris—work together to extend the knee and stabilize the hip.
These muscles are essential for movements like walking, running, jumping, and squatting. Any injury to these muscles, such as a quadriceps strain, can hinder your ability to perform these actions, limiting your range of motion and overall mobility.