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An evaluation of contrast medium spread on caudal epidurography with the needle positioned toward the affected side in patients with unilateral lumbosacral radiculopathy

Authors
 Jae Hoon Lee  ;  Duck Mi Yoon  ;  Tae Dong Kwon  ;  Kyung Bong Yoon 
Citation
 Skeletal Radiology, Vol.41(12) : 1613-1618, 2012 
Journal Title
 Skeletal Radiology 
ISSN
 0364-2348 
Issue Date
2012
Abstract
OBJECTIVE: We used caudal epidurography to compare the spread of contrast medium when the needle was inserted toward the affected side in patients with unilateral radiculopathy undergoing caudal steroid injection. MATERIALS AND METHODS: We enrolled 24 patients with unilateral radiculopathy. A block needle was positioned toward the affected side in the sacral epidural space. After 5 mL of iodinated contrast medium was injected, a standardized anteroposterior view was imaged. Using Adobe Photoshop software, contrast medium spread was assessed by counting pixels within the areas spread on the affected side and on the opposite side, and the pixel counts of the two sides were compared. Spinal nerve root filling was also assessed. RESULTS: The pixel count within the area of contrast medium spread on the side with the needle was significantly greater than that of the opposite side (mean [SD] 41,368.6 [13,143.1] vs 15,165.3 (10,698.1), P < 0.001]. However, 13.6% of the study patients had greater spread on the opposite side. The rates of L5 and S1 nerve root filling in the affected side were 18.2% and 36.4% respectively. CONCLUSIONS: When a needle was intentionally inserted toward the side with radiculopathy, the spread of contrast medium and number of delineated roots tended to be greater on the side with the needle, compared with those on the opposite side. However, the pattern of contrast medium spread in the sacral epidural space varied and some patients even had greater spread on the opposite side.
Full Text
http://link.springer.com/article/10.1007%2Fs00256-011-1354-5
DOI
10.1007/s00256-011-1354-5
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
Yonsei Authors
권태동(Kweon, Tae Dong) ORCID logo https://orcid.org/0000-0002-5451-1856
윤경봉(Yoon, Kyoung Bong) ORCID logo https://orcid.org/0000-0002-4167-1375
윤덕미(Yoon, Duck Mi)
이재훈(Lee, Jae Hoon) ORCID logo https://orcid.org/0000-0001-6679-2782
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/91853
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