Ambiguity regarding ligaments in the upper periorbita exists.  We hypothesize that a clinically significant retaining system in the superior orbit region mirrors the orbicularis retaining ligament (ORL) of the lower lid. 

Sixteen fresh hemi-facial cadavers were dissected to examine the topography of the ORL from lateral canthus to medial canthus. Dye injection studies were used to confirm the continuity/impermeability of this ligamentous system.

The ORL was found along the supraorbital rim to circumferentially spans the entire orbit. A fusion line between the ORL and orbital septum in the superior orbit is indistinguishable from that of the inferior orbit. Dye injection studies confirm the ORL as an important periorbital diffusion barrier. 

A truly circumferential ligamentous system exists in the upper periorbita and is the key retaining ligament.  This ligament serves as a support structure for the orbicularis muscle in the upper and lower eyelids, while its impermeability provides a protective mechanism in preventing ocular complications. With the popularity of Botox and filler injection techniques, understanding the topography of this partitioning membrane may help reduce ocular complications.  Furthermore, anatomical knowledge of the superior and inferior orbital retaining system may prove beneficial during: canthopexy, brow lifts, malar lifts, and other facial rejuvenation techniques.