This report describes a different approach for diminishing the movements of orbital prosthesis during mimic movements and chewing function. Mechanical devices such as magnets are used to enhance the retention in case lack of the implants. However rigid fixation of obturator and orbital prosthesis can result in movements of the orbital prosthesis during mastication. In this case obturator and or...

BACKGROUND Poly-L-lactide materials combined with hydroxyapatite (u-HA /PLLA) have been developed to overcome the drawbacks of absorbable materials, such as radiolucency and comparably less implant strength. This study was designed to evaluate the usefulness of u-HA/PLLA material in the repair of orbital medial wall defects. METHODS This study included 10 patients with pure medial wall blow-o...

BACKGROUND Surgical navigation requires registration of the pre-operative image dataset with the patient in the operation theatre. Various marker and marker-free registration techniques are available, each bearing an individual level of precision and clinical practicability. In this study the precision of four different registration methods in a maxillofacial surgical setting is analyzed. MAT...

BACKGROUND Porous polyethylene implants are commonly used in orbital blowout fracture repair because of purported biocompatibility, durability, and low frequency of complications. Delayed inflammation related to porous polyethylene sheet implants is very rare and no case series of this condition have been reported. CASE PRESENTATION This is a retrospective review of clinical presentations, ra...

GREAT efforts have been made by ophthalmologists in the last 10 years to design an implant conveying good prosthetic mobility, to offset in part the tragic result of excision. The immediate success of the implants aroused enthusiasm, but subsequent complications, including suppuration and expulsion, have led to further modifications. So frequent were these disappointments in spite of changes in...

AIM To compare the clinical effects of the modified and conventional secondary hydroxyapatite orbital implantations. METHODS A total of 40 patients who had received eye enucleation were equally randomized into the modified and conventional groups. Twenty patients were treated by conventional method. The four rectus muscles were separated, and then an orbital implant wrapped with xenogenous sc...

A 30 year old female with absolute glaucoma status post-evisceration developed recurrent orbital implant exposure and scleral melting. We successfully treated the large conjunctiva defect by utilizing secondary implant of dermis fat graft for tissue growth and tension-free conjunctiva closure. The patient was satisfied with the postoperative outcome, and no major complications were observed in ...

PURPOSE To investigate the long term survival of orbital fat grafted on a Medpor implant as a method of preventing porous polyethylene orbital implant (Medpor) exposure in anophthalmic sockets. METHODS In one orbit in each of 8 rabbits, a small amount of retrobulbar orbital fat was grafted between the anterior surface of the Medpor implant and overlying conjunctiva, during the enucleation and...