J Korean Ophthalmol Soc.  2008 Jul;49(7):1046-1053. 10.3341/jkos.2007.49.7.1046.

An Analysis of Orbital Reconstruction with Bioresorbable Plate Through Orbital Volume Assessment

• Park YJ
• Chung IY
• Seo SW

• KMID: 1476957
• DOI: http://doi.org/10.3341/jkos.2007.49.7.1046

Abstract

PURPOSE: To evaluate the early effect of orbital reconstruction with MacroPore(R) by assessment of orbital volume through orbital computed tomography (CT) in cases of orbital wall fracture
METHODS
We performed orbital reconstruction with MacroPore(R) in patients with orbital wall fracture smaller than 3 cmx2 cm. Orbital CT was done preoperatively and 6 months postoperatively. We then evaluated the results by measuring the orbital volume through Rapidia 2.8 program.
RESULTS
The study comprised 14 patients. The site of fracture was the medial wall in one patient, inferior in seven, and both medial and inferior in six patients. The site of insertion of MacroPore(R) was the medial wall in one patient, inferior in 12, and both medial and inferior walls in one. The mean volume of the affected orbit before operation was 20.23+/-2.78 cm3, that of the unaffected orbit was 18.27+/-2.24 cm3 (p-value=0.000), and the mean volume of the affected orbit after operation was 19.06+/-2.57 cm3, that of the unaffected orbit was 18.06+/-2.24 cm3 (p-value=0.000). The mean enophthalmos before operation was 1.00+/-0.62mm, and after operation was 0.64+/-0.46 mm. The mean difference of orbital volume between the affected and the unaffected orbits before operation was 1.96+/-0.33 cm3, and 1.00+/-0.87 cm3 after operation (p-value=0.000). The mean volume of the affected orbit before operation was 20.23+/-2.77 cm3, and 19.06+/-2.57 cm3 after operation (p-value=0.000). Each cubic centimeter decrement in volume caused a 0.67+/-0.68 mm mean decrease of enophthalmos.
CONCLUSIONS
We concluded that MacroPore(R) was safe orbital implant and effective in decreasing the orbital volume at early orbital reconstruction in cases of orbital wall fracture smaller than 3 cmx2 cm through a comparison of orbital volume before and after operation.

Keyword

Assessment of orbital volume; MacroPore(R); Orbital reconstruction

MeSH Terms

Enophthalmos
Humans
Orbit
Orbital Implants

Figure

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  Figure 1. MacroPore®.

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  Figure 2. Orbital CT scanning : before (A) and after operation (B).

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  Figure 3. Measurement of orbital volume by Rapidia 2.8 program: before (A) and after operation (B).

Reference

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