Clinical relevance of static and dynamic tests after anatomical double-bundle ACL reconstruction

Simone Bignozzi, Stefano Zaffagnini, Nicola Lopomo, Freddie H. Fu, James J. Irrgang, Maurilio Marcacci

Research output: Contribution to journalArticlepeer-review


A computer navigation system was used to collect kinematic data of 18 subjects undergoing ACL reconstruction. Surgical procedure was an anatomical four-tunnel hamstring double-bundle reconstruction. Static laxity and dynamic laxity were analyzed before and after graft passage and fixation. Correlations between static and dynamic laxities as well as with the preoperative IKDC score were determined. Static and dynamic laxities were significantly reduced after anatomic double-bundle ACL reconstruction (P <0.05). There were no significant correlations between static and dynamic laxities (r <0.4, P > 0.05). The preoperative IKDC score was only related to preoperative dynamic laxity (P <0.01). The dynamic evaluation of pivot shift is able to better describe knee laxity, in particular rotational laxities and has no correlation with static laxity.

Original languageEnglish
Pages (from-to)37-42
Number of pages6
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Issue number1
Publication statusPublished - Jan 2009


  • ACL
  • Double bundle
  • Navigation
  • Pivot shift

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery


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