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Correlation between changes of medial rectus muscle section and enophthalmos in patients with medial orbital wall fracture.

Authors
 Yong Kyu Kim  ;  Chang Sik Park  ;  Hyoung Kyu Kim  ;  Dae Hyun Lew  ;  Kwan Chul Tark 
Citation
 JOURNAL OF PLASTIC RECONSTRUCTIVE AND AESTHETIC SURGERY, Vol.62(11) : 1379-1383, 2009 
Journal Title
 JOURNAL OF PLASTIC RECONSTRUCTIVE AND AESTHETIC SURGERY 
ISSN
 1748-6815 
Issue Date
2009
MeSH
Adolescent ; Adult ; Child ; Cohort Studies ; Enophthalmos/diagnostic imaging ; Enophthalmos/etiology* ; Enophthalmos/therapy ; Female ; Follow-Up Studies ; Fracture Fixation/methods ; Fracture Healing/physiology ; Humans ; Injury Severity Score ; Male ; Middle Aged ; Monitoring, Physiologic/methods ; Oculomotor Muscles/physiopathology* ; Orbital Fractures/complications* ; Orbital Fractures/diagnostic imaging ; Orbital Fractures/surgery ; Orbital Fractures/therapy* ; Probability ; Retrospective Studies ; Risk Assessment ; Tomography, X-Ray Computed/methods ; Treatment Outcome ; Young Adult
Keywords
Medial rectus muscle ; Blow out fracture ; Enophthalmos ; Computed tomography
Abstract
BACKGROUND: Enophthalmos is the most distressing and common complication of the blow-out fracture. In spite of well-established indications for early operative repair of orbital fracture, 7-10% of patients treated non-operatively develop enophthalmos. There have been reports on the correlation between changes of orbital bone and enophthalmos; however, there is no report on muscle changes in computed tomography (CT) in medial blow-out fracture. The present authors have documented the correlation between change of medial rectus muscle and enophthalmos using CT scan in medial blow-out fracture patients. METHODS: In this study (from January 2001 to December 2006) of 340 patients diagnosed with medial blow-out fracture, 24 patients were treated non-operatively. Nine patients (Group 1) have over 2-mm enophthalmos and 15 patients (Group 2) have enophthalmos less than 2mm. The height-to-width (H-W) ratios of medial rectus muscle were measured in coronal views, and the size of defects were measured in coronal and axial views in CT. Hertel's exophthalmometry was measured on both eyes for all patients. RESULTS: The H-W ratios measured in the affected orbits were statistically significant between the two groups (p<0.0001). However, the size of defect is not related with enophthalmos in two groups statistically (P=0.421). CONCLUSION: These results mean that the H-W ratio of medial rectus muscle in coronal views of CT is a useful parameter to predict enophthalmos, and whether H-W ratios of medial rectus muscle over 0.7 need surgical correction.
Full Text
http://www.sciencedirect.com/science/article/pii/S1748681508007821
DOI
10.1016/j.bjps.2008.06.042
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Plastic and Reconstructive Surgery (성형외과학교실) > 1. Journal Papers
Yonsei Authors
Lew, Dae Hyun(유대현)
Tark, Kwan Chul(탁관철)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/106053
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