Abstract
Objectives. To document the reliability of Abe’s classification and to clarify the predictive factors for acetabular labral lesions in osteoarthritis of the hip with radial magnetic resonance (MR) imaging. Methods. Reliability trial for the classification of acetabular labral lesion was performed by six orthopedic surgeons, grading 20 radial MR images in a blinded fashion at an interval of 4-5 weeks. Radial MR images of 275 hips in 263 patients were prospectively analyzed to determine the relationship between acetabular labral lesions, their distribution, age, and the acetabular coverage. Results. Cohen’s quadratic weighted kappa of inter-observer reliability was 0.784 for the grade and 0.812 for the shape category. The weighted kappa of intra-observer reliability was 0.852 for the grade and 0.90 for the shape category. Multiple regression analysis revealed that both the grade and the shape were associated with age, acetabular coverage, and location of the labrum. Conclusions. Abe’s classification of labral lesions was reliable for both the grade and shape categories. Aging, acetabular dysplasia, and the anterosuperior portion would be predictive factors for degeneration of the acetabular labrum using radial MR imaging.
| Original language | English |
|---|---|
| Pages (from-to) | 974-979 |
| Number of pages | 6 |
| Journal | Modern Rheumatology |
| Volume | 24 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2014 Nov 1 |
| Externally published | Yes |
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Keywords
- Acetabular labral lesions
- Osteoarthritis of the hip
- Prognostic factor
- Radial magnetic resonance imaging
ASJC Scopus subject areas
- Rheumatology
Cite this
Predictive factors for acetabular labral lesions in osteoarthritis of the hip with radial magnetic resonance imaging - A cross-sectional study. / Takazawa, Makoto; Nakamura, Junichi; Abe, Isao; Ohtori, Seiji; Watanabe, Atsuya; Sato, Yasunori; Sasho, Takahisa; Orita, Sumihisa; Suzuki, Masahiko; Motoori, Ken; Masuda, Yoshitada; Takahashi, Kazuhisa; Kishida, Shunji.
In: Modern Rheumatology, Vol. 24, No. 6, 01.11.2014, p. 974-979.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Predictive factors for acetabular labral lesions in osteoarthritis of the hip with radial magnetic resonance imaging - A cross-sectional study
AU - Takazawa, Makoto
AU - Nakamura, Junichi
AU - Abe, Isao
AU - Ohtori, Seiji
AU - Watanabe, Atsuya
AU - Sato, Yasunori
AU - Sasho, Takahisa
AU - Orita, Sumihisa
AU - Suzuki, Masahiko
AU - Motoori, Ken
AU - Masuda, Yoshitada
AU - Takahashi, Kazuhisa
AU - Kishida, Shunji
PY - 2014/11/1
Y1 - 2014/11/1
N2 - Objectives. To document the reliability of Abe’s classification and to clarify the predictive factors for acetabular labral lesions in osteoarthritis of the hip with radial magnetic resonance (MR) imaging. Methods. Reliability trial for the classification of acetabular labral lesion was performed by six orthopedic surgeons, grading 20 radial MR images in a blinded fashion at an interval of 4-5 weeks. Radial MR images of 275 hips in 263 patients were prospectively analyzed to determine the relationship between acetabular labral lesions, their distribution, age, and the acetabular coverage. Results. Cohen’s quadratic weighted kappa of inter-observer reliability was 0.784 for the grade and 0.812 for the shape category. The weighted kappa of intra-observer reliability was 0.852 for the grade and 0.90 for the shape category. Multiple regression analysis revealed that both the grade and the shape were associated with age, acetabular coverage, and location of the labrum. Conclusions. Abe’s classification of labral lesions was reliable for both the grade and shape categories. Aging, acetabular dysplasia, and the anterosuperior portion would be predictive factors for degeneration of the acetabular labrum using radial MR imaging.
AB - Objectives. To document the reliability of Abe’s classification and to clarify the predictive factors for acetabular labral lesions in osteoarthritis of the hip with radial magnetic resonance (MR) imaging. Methods. Reliability trial for the classification of acetabular labral lesion was performed by six orthopedic surgeons, grading 20 radial MR images in a blinded fashion at an interval of 4-5 weeks. Radial MR images of 275 hips in 263 patients were prospectively analyzed to determine the relationship between acetabular labral lesions, their distribution, age, and the acetabular coverage. Results. Cohen’s quadratic weighted kappa of inter-observer reliability was 0.784 for the grade and 0.812 for the shape category. The weighted kappa of intra-observer reliability was 0.852 for the grade and 0.90 for the shape category. Multiple regression analysis revealed that both the grade and the shape were associated with age, acetabular coverage, and location of the labrum. Conclusions. Abe’s classification of labral lesions was reliable for both the grade and shape categories. Aging, acetabular dysplasia, and the anterosuperior portion would be predictive factors for degeneration of the acetabular labrum using radial MR imaging.
KW - Acetabular labral lesions
KW - Osteoarthritis of the hip
KW - Prognostic factor
KW - Radial magnetic resonance imaging
UR - http://www.scopus.com/inward/record.url?scp=84932113983&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84932113983&partnerID=8YFLogxK
U2 - 10.3109/14397595.2014.886542
DO - 10.3109/14397595.2014.886542
M3 - Article
VL - 24
SP - 974
EP - 979
JO - Modern Rheumatology
JF - Modern Rheumatology
SN - 1439-7595
IS - 6
ER -