The quadriceps muscle is a large muscle group located at the front of the thigh, consisting of four muscles: rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius. It is crucial for knee extension and plays a significant role in activities such as walking, running, and jumping. Quadriceps weakness or injury, such as a strain or tendinopathy, can lead to impaired mobility and increased risk of knee injuries, highlighting its importance in rehabilitation and sports medicine.
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