Beveled osteotomy with lateral wall advancement and interpositional bone grafting for severe thyroid orbitopathy. 2007

Grant D Gilliland, and Evan Clayton
Department of Ophthalmology, Baylor University Medical Center, Dallas, TX 75204, USA. grantg1@sbcglobal.net

OBJECTIVE To present a new technique for orbital decompressions for patients with severe thyroid orbitopathy that minimizes complications while maximizing the amount of decompression. This method involves advancing the lateral orbital wall in such a way as to promote osseous union and minimize cosmetic deformities. METHODS This paper represents a case series (42 eyes from 26 patients) of orbital decompressions for severe thyroid related orbitopathy. All patients were treated via a graded balanced orbital decompression with advancement of the lateral orbital wall with interpositional bone grafts. Preoperative and postoperative measurements were tabulated and statistically analyzed. RESULTS All patients demonstrated significant improvement in proptosis with an average Hertel exophthalmometry reduction of 8 mm. In addition, 22 patient orbits with preoperative elevation of intraocular pressure demonstrated an average 7 mm Hg improvement in postoperative intraocular pressure. Seven patients required strabismus surgery postoperatively and no patient developed new onset strabismus after surgery. Of all patients, 54% demonstrated improvement of visual acuity of greater than 1 line and no patient experienced a decrease in visual acuity. Postoperative computed tomography scan demonstrated osseous union of the lateral wall after advancement with this new technique. No patient complained of a palpable deformity of the lateral orbital wall. CONCLUSIONS The graded balanced orbital decompression with interpositional bone grafts effectively decompressed the orbit with significant improvement in final visual acuity, exophthalmometry measurements, and final intraocular pressure. In addition, this technique promotes osseous union with minimal cosmetic deformities.

UI MeSH Term Description Entries
D007429 Intraocular Pressure The pressure of the fluids in the eye. Ocular Tension,Intraocular Pressures,Ocular Tensions,Pressure, Intraocular,Pressures, Intraocular,Tension, Ocular,Tensions, Ocular
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009915 Orbit Bony cavity that holds the eyeball and its associated tissues and appendages. Eye Socket,Eye Sockets,Orbits,Socket, Eye,Sockets, Eye
D010027 Osteotomy The surgical cutting of a bone. (Dorland, 28th ed) Osteotomies
D005094 Exophthalmos Abnormal protrusion of both eyes; may be caused by endocrine gland malfunction, malignancy, injury, or paralysis of the extrinsic muscles of the eye. Proptosis,Proptoses
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012189 Retrospective Studies Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. Retrospective Study,Studies, Retrospective,Study, Retrospective
D014057 Tomography, X-Ray Computed Tomography using x-ray transmission and a computer algorithm to reconstruct the image. CAT Scan, X-Ray,CT Scan, X-Ray,Cine-CT,Computerized Tomography, X-Ray,Electron Beam Computed Tomography,Tomodensitometry,Tomography, Transmission Computed,X-Ray Tomography, Computed,CAT Scan, X Ray,CT X Ray,Computed Tomography, X-Ray,Computed X Ray Tomography,Computerized Tomography, X Ray,Electron Beam Tomography,Tomography, X Ray Computed,Tomography, X-Ray Computer Assisted,Tomography, X-Ray Computerized,Tomography, X-Ray Computerized Axial,Tomography, Xray Computed,X Ray Computerized Tomography,X Ray Tomography, Computed,X-Ray Computer Assisted Tomography,X-Ray Computerized Axial Tomography,Beam Tomography, Electron,CAT Scans, X-Ray,CT Scan, X Ray,CT Scans, X-Ray,CT X Rays,Cine CT,Computed Tomography, Transmission,Computed Tomography, X Ray,Computed Tomography, Xray,Computed X-Ray Tomography,Scan, X-Ray CAT,Scan, X-Ray CT,Scans, X-Ray CAT,Scans, X-Ray CT,Tomographies, Computed X-Ray,Tomography, Computed X-Ray,Tomography, Electron Beam,Tomography, X Ray Computer Assisted,Tomography, X Ray Computerized,Tomography, X Ray Computerized Axial,Transmission Computed Tomography,X Ray Computer Assisted Tomography,X Ray Computerized Axial Tomography,X Ray, CT,X Rays, CT,X-Ray CAT Scan,X-Ray CAT Scans,X-Ray CT Scan,X-Ray CT Scans,X-Ray Computed Tomography,X-Ray Computerized Tomography,Xray Computed Tomography

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