Effect of anchor threads on the pullout strength: A biomechanical study

Hideaki Nagamoto, Nobuyuki Yamamoto, Eiji Itoi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Pullout tests to determine the effect of anchor threads on the pullout strength was conducted by using universal testing machine, synthetic cancellous bone and thread-less metallic anchor. Anchors were inserted at 45° 90° or 135° from the surface and they were pulled at 45° from the surface. The maximum load to failure was compared among the 3 insertion angles. Pullout strength of the anchors inserted at 45° was significantly greater than those inserted at 90° or 135°. Pullout strength of the thread-less anchor was the greatest when it was inserted at 45° to the bone surface. Level of evidence: level II.

Original languageEnglish
Pages (from-to)878-881
Number of pages4
JournalJournal of Orthopaedics
Issue number3
Publication statusPublished - 2018 Sept


  • Anchor threads
  • Friction
  • Pullout strength
  • Suture anchor

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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