Tear of the proximal (conjoined) tendon of the right rectus femoris just distal to its origin with a fluid-filled gap and distal retraction of the tendon and muscle belly. note the torn conjoined tendon of the right rectus femoris (Red arrow), compare it to the normal direct head (blue arrow) and conjoined tendon (yellow arrow) of the normal left side. There is distal tendon retraction (Red arrow) compare to the normal left deep tendon (white arrow). And a torn right conjoined tendon (Red arrow), compared to the normal left side (white arrow)