Non-mineralized fibrocartilage shows the lowest elastic modulus in the rabbit supraspinatus tendon insertion: Measurement with scanning acoustic microscopy

Hirotaka Sano, Yoshifumi Saijo, Shoichi Kokubun

研究成果: Article査読

24 被引用数 (Scopus)

抄録

The acoustic properties of rabbit supraspinatus tendon insertions were measured by scanning acoustic microscopy. After cutting parallel to the supraspinatus tendon fibers, specimens were fixed with 10% neutralized formalin, embedded in paraffin, and sectioned. Both the sound speed and the attenuation constant were measured at the insertion site. The 2-dimensional distribution of the sound speed and that of the attenuation constant were displayed with color-coded scales. The acoustic properties reflected both the histologic architecture and the collagen type. In the tendon proper and the non-mineralized fibrocartilage, the sound speed and attenuation constant gradually decreased as the predominant collagen type changed from I to II. In the mineralized fibrocartilage, they increased markedly with the mineralization of the fibrocartilaginous tissue. These results indicate that the non-mineralized fibrocartilage shows the lowest elastic modulus among 4 zones at the insertion site, which could be interpreted as an adaptation to various types of biomechanical stress.

本文言語English
ページ(範囲)743-749
ページ数7
ジャーナルJournal of Shoulder and Elbow Surgery
15
6
DOI
出版ステータスPublished - 2006 11月 1

ASJC Scopus subject areas

  • 外科
  • 整形外科およびスポーツ医学

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