小児弾発母指の病理組織学的研究
スポンサーリンク
概要
- 論文の詳細を見る
Snapping thumb of the infant is usually caused by the disturbance of movement of the flexor tendon in its sheath. Few reports have dealt in detail with the histopathology of the snapping thumb. In the present study, light and electron microscopic observations were carried out on parts of the tendon and tendon sheath excised from snapping thumbs.The tendons and tendon sheaths were obtained from 21 fingers of 19 infants operated on over the last 2 years, under the diagnosis of snapping thumb. There were 10 males and 9 females, ranging in age from 1 to 6 years old. Sectioned samples were studied histochemically, using periodic-acid Schiff, toluidine-blue and high-iron-diamine alcian blue stains. The ultrastructure of the tendon nodule was also studied by scanning and transmission electron microscopy.Increase of the amorphous material and collagen fibrils was observed at the site of tendon nodule formation. The amorphous material was basophilic with hematoxylin-eosin staining, metachromatic with toluidine blue staining, and became dark violet with high-iron-diamine alcian blue, which indicates that it contains acidic mucopolysaccharide with a sulfate radical. The tendon sheath did not contain much amorphous material, but connective tissue cells proliferated. Synovial lining cells were not stratified and no inflammatory cells were found. By scanning electron microscopy, bundles of collagen fibrils of 0.1-0.15μ in diameter, probably newly synthesized, were observed in the middle portion of the tendon nodule. Transmission electron microscopy confirmed that ruthenium-red positive materials exist inside and outside of the fibroblasts. These fibroblasts seem to very actively produce acid mucopolysaccharide and collagen fibrils. Accumulation of the mucopolysaccharide and collagen fibrils by metaplasia of the fibroblasts in the endotenon and epitenon might make the nodule in the tendon. This tendon nodule formation is the primary cause of the snapping thumb of infants.
論文 | ランダム
- [2010年]11月からe2基本パックを1000円割引へ、スカパーJSATが番供に提案
- 不動産信託受益権質権の私的実行による受益者変更登記 (特集 不動産ファイナンス取引におけるデフォルト時の法的諸問題) -- (信託受益権質権の実行)
- 不動産登記代理委任と法令遵守確認義務(3)信託登記代理における法令遵守と民事信託規律の維持
- 判例の紹介 国に対する土地所有権確認の訴えについて,不動産登記簿上,土地の所有者が不明であっても,直ちに民法239条2項の無主の不動産であると認めることはできないとして,確認の利益が否定された事例[東京高等裁判所平成21.10.14判決]
- 不動産登記業務と司法書士倫理 (特集 司法書士倫理について)