Quadriceps Injury

Quadriceps femoris can be severely contracted due to violent running or sudden kicks, or caused by violent beating, smashing, or bumping in front of the thighs. After quadriceps injury, local bleeding, swelling, and pain occur, which reduces muscle contraction and affects flexion and extension of the hip and knee joints. The quadriceps injury was severely broken, and even the upper edge of the quadriceps patella was torn, and the patella periosteal was also torn off, which could lead to periosteal bleeding, mechanization, calcification, and ossification of the hematoma.

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