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Evaluation of chondromalacia of the patella with axial inversion recovery–fast spin-echo imaging

Authors
 Sang Hoon Lee  ;  Jin-Suck Suh  ;  Jaemin Cho  ;  Seong Joon Kim  ;  Sung Jae Kim 
Citation
 JOURNAL OF MAGNETIC RESONANCE IMAGING, Vol.13(3) : 412-416, 2001 
Journal Title
 JOURNAL OF MAGNETIC RESONANCE IMAGING 
ISSN
 1053-1807 
Issue Date
2001
MeSH
Adolescent ; Burns/complications ; Burns/surgery* ; Fascia/transplantation ; Female ; Foot Injuries/etiology ; Foot Injuries/surgery* ; Humans ; Reconstructive Surgical Procedures/methods* ; Skin Transplantation/methods* ; Surgical Flaps*
Abstract
The purpose of our study was to assess the accuracy of inversion recovery–fast spin-echo (IR-FSE) imaging for the evaluation of chondromalacia of the patella. Eighty-six patients were included, they underwent magnetic resonance (MR) examination and subsequent knee arthroscopy. Medial and lateral facets of the patella were evaluated separately. Axial images were obtained by using IR-FSE (TR/TE/TI = 3000/25/150 msec; echo train length, 8; 4-mm thickness; 12-cm field of view; 512 × 256 matrix; two, number of excitations) with a 1.5-T MR machine. MR interpretation of chondromalacia was made on the basis of the arthroscopic grading system. Of a total of 172 facets graded, arthroscopy revealed chondromalacia in 14 facets with various grades (G0, 158; G1, 1; G2, 3; G3, 6; G4, 4). Sensitivity, specificity, and accuracy in the chondromalacia grades were 57.1%, 93.0%, and 90.1%, respectively. There was one false-negative case (G4) and 11 false-positive cases (G1, eight; G2, two; G3, one). Sensitivity and specificity corrected by one grade difference were improved to 85.7% and 98.1%, respectively. When cartilage changes were grouped into early (corresponding to grade 1 and 2) and advanced (grade 3 and 4) diseases, sensitivity and specificity of the early and advanced diseases were 75% and 94% and 80% and 99%, respectively. IR-FSE imaging of the knee revealed high specificity but low sensitivity for the evaluation of chondromalacia of the patella.
Full Text
http://onlinelibrary.wiley.com/doi/10.1002/jmri.1059/abstract
DOI
10.1002/jmri.1059
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sung Jae(김성재)
Kim, Sungjun(김성준) ORCID logo https://orcid.org/0000-0002-7876-7901
Suh, Jin Suck(서진석) ORCID logo https://orcid.org/0000-0001-9455-9240
Lee, Sang Hoon(이상훈)
Cho, Jaemin(조재민)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/141965
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