The arthroscopic “impingement test” during anterior cruciate ligament reconstruction

Darren L. Johnson, Mark D. Miller, Freddie H. Fu

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


A primary goal of ACL reconstruction is to avoid graft impingement, which may lead to loss of motion and/or an increased incidence of instability. Although surgeons are cognizant of this potential problem, the intraoperative correction of graft impingement is technically demanding because the graft-notch relationship is obscured by the trochlea articulating with the tibial plateau during the final 10° of extension. We present a simple impingement test that is performed before graft insertion and fixation to help avoid this potential pitfall.

Original languageEnglish
Pages (from-to)714-717
Number of pages4
Issue number6
StatePublished - 1993


  • Anterior cruciate ligament reconstruction
  • Graft impingement
  • Notch stenosis
  • Notchplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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