Standardized pivot shift test improves measurement accuracy

Yuichi Hoshino, Paulo Araujo, Mattias Ahlden, Charity G. Moore, Ryosuke Kuroda, Stefano Zaffagnini, Jon Karlsson, Freddie H. Fu, Volker Musahl

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: The variability of the pivot shift test techniques greatly interferes with achieving a quantitative and generally comparable measurement. The purpose of this study was to compare the variation of the quantitative pivot shift measurements with different surgeons' preferred techniques to a standardized technique. The hypothesis was that standardizing the pivot shift test would improve consistency in the quantitative evaluation when compared with surgeon-specific techniques. Methods: A whole lower body cadaveric specimen was prepared to have a low-grade pivot shift on one side and high-grade pivot shift on the other side. Twelve expert surgeons performed the pivot shift test using (1) their preferred technique and (2) a standardized technique. Electromagnetic tracking was utilized to measure anterior tibial translation and acceleration of the reduction during the pivot shift test. The variation of the measurement was compared between the surgeons' preferred technique and the standardized technique. Results: The anterior tibial translation during pivot shift test was similar between using surgeons' preferred technique (left 24.0 ± 4.3 mm; right 15.5 ± 3.8 mm) and using standardized technique (left 25.1 ± 3.2 mm; right 15.6 ± 4.0 mm; n. s.). However, the variation in acceleration was significantly smaller with the standardized technique (left 3.0 ± 1. 3 mm/s 2; right 2.5 ± 0.7 mm/s 2) compared with the surgeons' preferred technique (left 4.3 ± 3.3 mm/s 2; right 3.4 ± 2.3 mm/s 2; both P <0.01). Conclusion: Standardizing the pivot shift test maneuver provides a more consistent quantitative evaluation and may be helpful in designing future multicenter clinical outcome trials. Level of evidence: Diagnostic study, Level I.

Original languageEnglish
Pages (from-to)732-736
Number of pages5
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Volume20
Issue number4
DOIs
Publication statusPublished - Apr 2012

Keywords

  • Acceleration measurement
  • Anterior cruciate ligament (ACL)
  • Electromagnetic measurement system
  • Image analysis
  • Pivot shift test

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

Fingerprint Dive into the research topics of 'Standardized pivot shift test improves measurement accuracy'. Together they form a unique fingerprint.

Cite this