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Quantitative assessment of increase in orbital volume after orbital floor fracture reconstruction using a bioabsorbable implant

Authors
 Hyun Young Park  ;  Tae Hyung Kim  ;  Jin Sook Yoon  ;  JaeSang Ko 
Citation
 GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY, Vol.260(9) : 3027-3036, 2022-09 
Journal Title
GRAEFES ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY
ISSN
 0721-832X 
Issue Date
2022-09
MeSH
Absorbable Implants ; Enophthalmos* ; Humans ; Orbit ; Orbital Fractures* ; Retrospective Studies
Keywords
Absorbable implant ; Enophthalmos ; Orbital floor fracture ; Orbital fracture ; Three-dimensional imaging
Abstract
Purpose: To assess the postoperative changes in the orbital volume and the degree of enophthalmos after orbital floor fracture reconstruction using a bioabsorbable implant and to determine the predictors of postoperative orbital volume change.

Methods: Single-center, retrospective case series of 16 patients who underwent orbital floor fracture reconstruction using a bioabsorbable implant [poly(L-lactic acid)-poly(glycolic acid)/β-tricalcium phosphate; Biobsorb β®] were included. Three-dimensional volumetric calculations of orbit were determined using computed tomography scans and the degree of enophthalmos was assessed via Hertel exophthalmometry. Postoperative changes in the orbital volume and the degree of enophthalmos and their correlation were assessed.

Results: The mean volume of fractured orbits immediately after surgery was 22.26 ± 1.98 cm3, increasing to 23.67 ± 2.00 cm3 at 6-month follow-up (p < 0.001); the increased orbital volume was associated with postoperative deformation of the implant. The mean degree of enophthalmos was 0.09 ± 0.27 mm at 1-month follow-up, which increased to 0.66 ± 0.30 mm at 6-month follow-up (p = 0.001). Increase in orbital volume and enophthalmos progression showed a linear correlation (R = 0.682, p = 0.004). Patients with more herniated orbital tissue preoperatively showed increased postoperative orbital volume change (p = 0.015), whereas the size of the fracture area was not predictive of postoperative orbital volume change (p = 0.442).

Conclusion: Increase in orbital volume by deformation of the bioabsorbable implant resulted in progressive enophthalmos during the postoperative follow-up period after orbital floor fracture reconstruction. Thus, careful selection of proper implants before surgery and close postoperative follow-up is needed for an optimal outcome.
Full Text
https://link.springer.com/article/10.1007/s00417-022-05610-z
DOI
10.1007/s00417-022-05610-z
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Ko, Jaesang(고재상) ORCID logo https://orcid.org/0000-0002-3011-7213
Yoon, Jin Sook(윤진숙) ORCID logo https://orcid.org/0000-0002-8751-9467
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/191937
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