The fate of the poly-L-lactic acid interference screw after anterior cruciate ligament reconstruction

Vladimir Martinek, Romain Seil, Christian Lattermann, Simon C. Watkins, Freddie H. Fu

Research output: Contribution to journalArticleResearchpeer-review

57 Citations (Scopus)

Abstract

We report the persistence of a poly-L-lactic acid (PLLA) interference screw 2.5 years after anterior cruciate ligament (ACL) reconstruction with Achilles tendon allograft. The arthroscopy was performed because the patient sustained a reinjury of the ACL graft, making ACL revision surgery necessary. At the time of arthroscopy, both PLLA screws were macroscopically still intact but could not be removed in 1 piece. No inflammation could be observed either macroscopically or in the histologic analysis. The biopsy specimen from the femoral insertion of the graft showed parts of the PLLA material surrounded by scar tissue. This case shows that biodegradation of PLLA material in the knee joint causes no irritation and can take several years, even if the material is in contact with the synovial fluid.

Original languageEnglish
Pages (from-to)73-76
Number of pages4
JournalArthroscopy - Journal of Arthroscopic and Related Surgery
Volume17
Issue number1
DOIs
Publication statusPublished - Jan 2001
Externally publishedYes

Keywords

  • Anterior cruciate ligament reconstruction
  • Bioabsorbable interference screw
  • Biodegradation
  • Poly-L-lactic acid

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