Presentation
Soccer player. Complains of acute right hip pain after sprinting at football match
Patient Data
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.
The rectus muscle shows edema and hemorrhagic signal.
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)
Case Discussion
The rectus femoris muscle has two tendinous origins, the direct or straight head, which arises from the anterior inferior iliac spine (AIIS), and the indirect or reflected head, which arises from the superior acetabular ridge and the posterolateral aspect of the hip joint capsule .
The two heads form a conjoined tendon.
The rectus femoris is the most commonly injured muscle of the quadriceps muscle group.
Proximal rectus femoris strains can occur at the junction of the conjoint tendon with the muscle belly.
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