Contact area, contact pressure, and pressure patterns of the tendon-bone interface after rotator cuff repair

Yilihamu Tuoheti, Eiji Itoi, Nobuyuki Yamamoto, Nobutoshi Seki, Hidekazu Abe, Hiroshi Minagawa, Kyoji Okada, Yoichi Shimada

Research output: Contribution to journalArticle

131 Citations (Scopus)

Abstract

Background: The contact pressure and contact area at the tendon-bone interface after the most commonly used rotator cuff repair methods have not been investigated. Hypothesis: There are no significant differences among the transosseous, the single-row suture anchor, and the double-row suture anchor techniques in terms of contact pressure, contact area, and pressure patterns at the tendon-bone interface. Study Design: Controlled laboratory study. Methods: After creating a full-thickness supraspinatus tendon tear in 10 cadaveric shoulder specimens, we inserted pressure-sensitive film between the tendon stump and the bone, and we repaired the tear by (1) transosseous, (2) single-row suture anchor, and (3) double-row suture anchor techniques. Results: The contact area of the double-row technique was 42% greater than that of the transosseous technique (P < .0001) and 60% greater than that of the single-row technique. The contact area of the transosseous technique was 31 % greater than that of the single-row technique (P = .0015). The average pressures of the single-row and double-row techniques were 18% (P = .014) and 16% (P = .03) greater, respectively, than that of the transosseous technique, but there was no significant difference between the single-row and double-row techniques (P = .915). Conclusions: The double-row technique produced the greatest contact area and the second-highest contact pressure, whereas the single-row technique created the highest contact pressure and the least contact area. The transosseous technique produced the second-greatest contact area and the least contact pressure. Clinical Relevance: The double-row suture anchor technique and the transosseous technique may provide a better environment for tendon healing.

Original languageEnglish
Pages (from-to)1869-1874
Number of pages6
JournalAmerican Journal of Sports Medicine
Volume33
Issue number12
DOIs
Publication statusPublished - 2005 Dec 1
Externally publishedYes

Keywords

  • Contact area
  • Contact pressure
  • Rotator cuff repair

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

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