Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A finite element study of the influence of the osteotomy surface on the
  backward displacement during exophthalmia reduction   Exophthalmia is characterized by a protrusion of the eyeball. The most
frequent surgery consists in an osteotomy of the orbit walls to increase the
orbital volume and to retrieve a normal eye position. Only a few clinical
obser-vations have estimated the relationship between the eyeball backward
dis-placement and the decompressed fat tissue volume. This paper presents a
method to determine the relationship between the eyeball backward displace-ment
and the osteotomy surface made by the surgeon, in order to improve
ex-ophthalmia reduction planning. A poroelastic finite element model involving
morphology, material properties of orbital components, and surgical gesture is
proposed to perform this study on 12 patients. As a result, the osteotomy
sur-face seems to have a non-linear influence on the backward displacement.
More-over, the FE model permits to give a first estimation of an average law
linking those two parameters. This law may be helpful in a surgical planning
frame-work.

37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th