Biomechanical effect of posterolateral corner sectioning after ACL injury and reconstruction

Tommaso Bonanzinga, Cecilia Signorelli, Nicola Lopomo, Alberto Grassi, Maria Pia Neri, Giuseppe Filardo, Stefano Zaffagnini, Maurilio Marcacci

Research output: Contribution to journalArticlepeer-review


Purpose: Posterolateral corner structures functionally interact with the ACL. The aim of this study was to investigate the capability of an isolated ACL reconstruction control laxity parameters in a knee with combined ACL and PLC and the increase in terms of laxity produced by the resection of the PC in an ACL-deficient knee. Method: An in vitro cadaveric study was performed on seven knees. The joints were analysed in the following conditions: intact, after ACL resection, after popliteus complex resection, after ACL reconstruction and after LCL. Testing laxity parameters were recorded with an intra-operative navigation system and defined as: AP displacement at 30° and 90° of flexion (AP30 and AP90) applying a 130 N load and IE at 30° and 90° of knee flexion with a 5 N load. Results: Sectioning the ACL significantly increased the AP30 at 30° and 90° of knee flexion (p 

Original languageEnglish
Pages (from-to)2918-2924
Number of pages7
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Issue number10
Publication statusPublished - Jul 17 2015


  • ACL
  • Combined lesions
  • Kinematics
  • Laxity
  • Posterolateral corner

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery


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