zona orbicularis


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zona or·bi·cu·la·ris

(zō'nă ōr-bik'yū-lār'is)
Fibers of the articular capsule of the hip joint encircling the neck of the femur.
References in periodicals archive ?
Osteochondromas near the femoral head, including those on the back of the zona orbicularis, were easily removed.
In addition, an arthroscopic approach to the peripheral compartment distal to the zona orbicularis increases the risk of injury to the nutrient vessels of the head of the femur, such as a branch of the medial circumflex femoral artery [8, 9].