Kinematics of ACL and anterolateral ligament. Part II: anterolateral and anterior cruciate ligament reconstruction

Tommaso Bonanzinga, Cecilia Signorelli, Alberto Grassi, N. Lopomo, M. Jain, M. Mosca, F. Iacono, M. Marcacci, Stefano Zaffagnini

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To quantify the influence of Single-Bundle with Lateral Plasty and Double-Bundle reconstruction on static and dynamic laxity in combined ACL- and ALL-deficient knees. Methods: The study included 10 fresh-frozen human knees. The joints were analyzed in the following conditions: ACL + ALL resection, Single-Bundle with Lateral Plasty (SBLP) reconstruction, Double-Bundle (DB) reconstruction. Testing parameters were: anterior displacement at 30° and 90° of flexion (AP30, AP90) applying a manual maximum load; internal rotation at 30° and 90° of flexion (INT30, INT90) applying a 5 Nm torque and acceleration and internal rotation Pivot-Shift (PS) test. Kinematics was acquired by a navigation system. Paired Student’s t test was conducted to assess statistical difference (P < 0.05). Results: At both 30° and 90° of knee flexion, both SBLP and DB surgical techniques showed a significant reduction (P < 0.01) of anterior–posterior tibial displacement compared to the resection of ACL + ALL. At 30° on knee flexion it is the SBLP that allows the greatest reduction of internal rotational laxity when compared to DB reconstruction. Concerning the PS test, only SBPL procedure had a significant laxity decrease considering the acceleration reached by the joint when compared with the ACL + ALL state (P < 0.01). Conclusion: Clinical relevance of this study is that the internal rotation and PS test were more efficiently controlled by the SBLP technique than by the DB one at both 30° and 90° of flexion in case of ACL + ALL lesions.

Original languageEnglish
Pages (from-to)1062-1067
Number of pages6
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Volume25
Issue number4
DOIs
Publication statusAccepted/In press - Mar 9 2017

Keywords

  • Anterolateral
  • Combined lesions
  • Laxity
  • Navigation system
  • Reconstruction

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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