Magnetic Resonance Imaging of Meniscal Disorders in the Elderly.
スポンサーリンク
概要
- 論文の詳細を見る
To assess the association between MRI findings and the clinical features of meniscal injuries, MRI finding were compared with surgical or arthroscopic findings in 53 middle-aged and elderly patients (13 men and 40 women with a mean age of 62.4 years) . The MRI sensitivity was a high of 94.3%, but specificity was only 71.7%, and accuracy was 83.0%. In many elderly patients, MRI signal intensity varied within the meniscus, suggesting a tear although none was present.<BR>In order to identify the features reflected by MRI signal intensity changes, histopathological findings were compared with MRI findings in 22 menisci (11 medial and 11 lateral) from 13 patients with a mean age of 76.0 years. After MRI examination, the menisci were removed and sections were histologically examined. MRI signal intensity was rated on a scale of 0 to 4. Signal intensity was normal (Grade 0) in about 50% of the cases. Signal intensity over the anterior segments of the menisci was Grade 0 (normal) in 73.4%. Signal intensity over the posterior segments ranged from Grade 1 to 4 in 85.5%. When the signal intensity was Grade 0 or 1, there were no microscopic tears. However, the occurrence of microscopic tears and degeneration increased steadily at higher grades. In many elderly individuals, signal intensity varied within the meniscus due to degeneration of the cartilage, and in some cases meniscal injuries could not be distinguished from degeneration using MRI.
- 日本関節病学会の論文
日本関節病学会 | 論文
- 関節リウマチ患者における手術と機能回復
- 低出力超音波刺激(LIPUS)および線維芽細胞増殖因子(FGF-2)の骨形成促進作用におけるヒアルロン酸(HA)の影響
- 変形性関節症に対するグルコサミン・コンドロイチンの有用性 (第36回[日本関節病]学会寄稿)
- 人工膝関節再置換術の経験--脛骨結節骨切り術の適応と合併症について
- RA頚椎病変に対する上位頚椎後方除圧固定術の治療成績と問題点