The JBJS Quiz of the Month is a collection of 10 relevant questions from each orthopaedic subspecialty. The questions are drawn from JBJS Clinical Classroom, which houses over 4,500 questions and 3,100 learning resources. Take the Quiz to see how you score against your peers!

NOTE: This quiz does not earn users CME credits. The questions must be answered within Clinical Classroom to earn CME credits.

The majority of the blood supply to the femoral head comes from the medial and lateral circumflex vessels. These vessels directly branch off of which of the following?
    • Obturator artery
    • The obturator artery is a branch of the internal iliac artery and divides into an anterior and posterior branch after passing through the obturator foramen. It supplies the obturator externus, pectineus, and adductor muscles.


  • Profunda femoris

The profunda femoris is a branch of the common femoral artery, and supplies many different branches including the medial and lateral circumflex vessels that supply the femoral head.



  • Superior gluteal artery

The superior gluteal artery is a branch of the internal iliac artery, and supplies the gluteus medius and minimus muscles, as well as parts of the gluteus maximus and tensor fascia lata muscles.



  • External iliac artery

The external iliac artery is a branch of the common iliac artery, and divides into the inferior epigastric, deep circumflex iliac, and femoral arteries.