IADR Abstract Archives
The Periocular Submuscular Fat Pads: SOOF and ROOF
Objectives: The aim of this study was the comparative anatomy between the retroorbicularis oculi fat (ROOF) and the suborbicularis oculi fat (SOOF) analysing their morphological interaction to the surrounding structures.
Methods:
Full graft tissue blocks of the supra- and infraorbital region containing skin, superficial musculoaponeurotic system (SMAS), the orbicularis oculi muscle (OOM) and ROOF respectively SOOF were post mortem collected from five (three male and two female) formalin fixed donor bodies. Serial histological sections were cut, stained in Azan and digitized. Histological analysis was performed pointing out the architectural differences between ROOF and SOOF revealing their interaction with the orbicularis oculi muscle (OOM). Digitalization and three dimensional reconstruction of the fat pads and of the surrounding structures was performed using AutoCAD.
Results:
ROOF and SOOF were fat pads consisting of fibrous meshworks bolstered with univacuolar fatty tissue underlying the OOM in the supra- respectively infraorbital region. There was sporadic fibrous interaction between the ROOF and the orbital septum. Fibrous septa spread from the fat pads meshwork inserting into the OOM dividing it into muscular bundles. Both fat pads were anchored to the periorbital SMAS. The periorbital SMAS showed similar morphological architecture in the upper and lower eyelid. Vascular system was recognized between the fat pads and the OOM. There were different SMAS morphological architectures in the upper and lower lid area compared to the regions cranial to the supraorbital fold respectively caudal to the infraorbital fold. The three-dimensional reconstruction revealed exact surface congruence between both fat pads and the OOM.
Conclusions:
ROOF and SOOF act like gliding cushions for the OOM during contraction. During muscle contraction the vascular system between the fat pads and the MOO is compressed, which facilitates venous and lymphatic drainage. The supra- and infraorbital fold were the topographical borders for the SMAS architectural changes.
Methods:
Full graft tissue blocks of the supra- and infraorbital region containing skin, superficial musculoaponeurotic system (SMAS), the orbicularis oculi muscle (OOM) and ROOF respectively SOOF were post mortem collected from five (three male and two female) formalin fixed donor bodies. Serial histological sections were cut, stained in Azan and digitized. Histological analysis was performed pointing out the architectural differences between ROOF and SOOF revealing their interaction with the orbicularis oculi muscle (OOM). Digitalization and three dimensional reconstruction of the fat pads and of the surrounding structures was performed using AutoCAD.
Results:
ROOF and SOOF were fat pads consisting of fibrous meshworks bolstered with univacuolar fatty tissue underlying the OOM in the supra- respectively infraorbital region. There was sporadic fibrous interaction between the ROOF and the orbital septum. Fibrous septa spread from the fat pads meshwork inserting into the OOM dividing it into muscular bundles. Both fat pads were anchored to the periorbital SMAS. The periorbital SMAS showed similar morphological architecture in the upper and lower eyelid. Vascular system was recognized between the fat pads and the OOM. There were different SMAS morphological architectures in the upper and lower lid area compared to the regions cranial to the supraorbital fold respectively caudal to the infraorbital fold. The three-dimensional reconstruction revealed exact surface congruence between both fat pads and the OOM.
Conclusions:
ROOF and SOOF act like gliding cushions for the OOM during contraction. During muscle contraction the vascular system between the fat pads and the MOO is compressed, which facilitates venous and lymphatic drainage. The supra- and infraorbital fold were the topographical borders for the SMAS architectural changes.