Supplementary core sutures increase resistance to gapping for flexor digitorum profundus tendon to bone surface repair - An in vitro biomechanical analysis

N. Kusano, M. A. Zaegel, J. D. Placzek, R. H. Gelberman, Matthew J. Silva

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We evaluated the effects of two types of supplementary core sutures on the tensile properties and resistance to gap formation of flexor digitorum profundus (FDP) tendon-bone repairs. Forty-five human cadaver FDP tendons were sharply released from their insertion sites and repaired to bone utilizing one of three repair techniques: four-strand modified Becker core suture (Becker only), modified Becker plus a figure-of-eight supplementary core suture (Becker plus figure-of-eight), and modified Becker plus a supplementary core suture using a bone anchor (Becker plus anchor). Ultimate (maximum) force did not differ between repair groups. However, addition of a supplementary suture significantly increased repair-site stiffness and the 1, 2 and 3 mm gap forces, while decreasing the gap at 20 N compared to the Becker only suture (P < 0.05). The only difference between the two supplementary suture groups was that the Becker plus anchor group had increased stiffness compared to the Becker plus figure-of-eight group. In conclusion, a supplementary figure-of-eight suture and a supplementary suture using a bone anchor provide enhanced resistance to gap formation for FDP tendon-bone repairs.

Original languageEnglish
Pages (from-to)288-293
Number of pages6
JournalJournal of Hand Surgery
Volume30
Issue number3
DOIs
StatePublished - Jun 2005

Keywords

  • FDP tendon
  • Gap formation
  • Tendon-bone repair

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