Does meniscus removal affect ACL-deficient knee laxity? An in vivo study

S. Zaffagnini, C. Signorelli, T. Bonanzinga, A. Grassi, H. Galán, I. Akkawi, L. Bragonzoni, F. Cataldi, M. Marcacci

Research output: Contribution to journalArticle

Abstract

Purpose: The purpose of the present study was to determine, in vivo, the effect of different types of meniscectomy on an ACL-deficient knee. Methods: Using a computer-assisted navigation system, 56 consecutive patients (45 men and 11 women) were subjected to a biomechanical testing with Lachman test (AP30), drawer test (AP90), internal/external rotation test, varus/valgus rotation test and pivot-shift test. The patients were divided into three groups according to the status of the medial meniscus. Group BH, 8 patients with bucket-handle tear of medial meniscus underwent a subtotal meniscectomy; Group PHB, 19 patients with posterior horn body of medial meniscus tear underwent a partial meniscectomy; and Group CG with isolated ACL rupture, as a control group, with 29 patients. Results: A significant difference in anterior tibial translation was seen at 30 grades and in 90 grades between BH and PHB groups compared to the CG. In response to pivot-shift test, no significant differences in terms of AREA and POSTERIOR ACC were found among the three groups (n.s). Concerning the anterior displacement of the pivot shift a statistically significant differences among the three tested groups was found. Conclusion: The present study shows that meniscal defects significantly affect the kinematics of an ACL-deficient knee in terms of anterior tibial translation under static and dynamic testing.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalKnee Surgery, Sports Traumatology, Arthroscopy
DOIs
Publication statusAccepted/In press - Jul 1 2016

Keywords

  • ACL
  • Deficient knee
  • Laxity
  • Meniscectomy
  • Navigation system

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

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    Zaffagnini, S., Signorelli, C., Bonanzinga, T., Grassi, A., Galán, H., Akkawi, I., Bragonzoni, L., Cataldi, F., & Marcacci, M. (Accepted/In press). Does meniscus removal affect ACL-deficient knee laxity? An in vivo study. Knee Surgery, Sports Traumatology, Arthroscopy, 1-6. https://doi.org/10.1007/s00167-016-4222-y