ABSTRACT
BROW-RETAINING LIGAMENTS n Orbital ligament: Fibrous band connecting the orbital rim and the superficial temporal fascia
deep to the lateral eyebrow8
n Frontalis muscle • Origin: Galea aponeurosis • Insertion: Supraorbital dermis by interdigitating with orbicularis oculi Loose connective tissue under muscle allows movement, but muscular and periosteal
adhesions limit brow movement (important in surgical releases). • Innervation: Temporal (frontal) branch of facial nerve • Action: Brow elevator; creates transverse forehead rhytids • Galea aponeurosis: Splits into two sheaths that encapsulate the frontalis Posterior sheath extends to the periosteum at the superior orbital rim.
