Analysis of the influence of anaesthesia on the clinical and quantitative assessment of the pivot shift: a multicenter international study

Nicola Lopomo, Cecilia Signorelli, Amir Ata Rahnemai-Azar, Federico Raggi, Yuichi Hoshino, Kristian Samuelsson, Volker Musahl, Jon Karlsson, Ryosuke Kuroda, Stefano Zaffagnini, Pivot Study Group The Pivot Study Group

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Purpose: The main goal of this work was to evaluate the pivot shift test in awake and anesthetized patients by using two different quantitative methodologies and comparing the results with the standard clinical grading, taking advantage of a multicenter international study. Methods: Patients between 16 and 50 years of age undergoing primary unilateral single-bundle anterior cruciate ligament (ACL) reconstruction were considered eligible. The pivot shift test was performed pre-operatively, with the patient awake and again with the patient under general anaesthesia. The pivot shift test was clinically graded as defined by the International Knee Documentation Committee. The instrumented assessment was performed by using two non-invasive acquisition systems; specifically, a system exploiting an inertial sensor and a video-based application developed on a commercial tablet using skin markers. Lateral compartment translation and the tibial acceleration reached during joint reduction were used as quantitative parameters. Results: A total of 103 patients were enrolled in the study. Statistically significant difference was found between the distributions of clinical grade evaluated in awake patients and those under general anaesthesia (P <0.01). Comparing awake patients to those under general anaesthesia, lower values were found both for tibial acceleration (3.7 ± 1.5 vs 6.0 ± 4.6 m/s2, P <0.01) and lateral compartment translation of the involved limb (2.2 ± 1.7 vs 3.0 ± 2.2 mm, P <0.01). Conclusions: This study indicated that significant differences in the grading of the pivot shift test exist between awake and anesthetized patients, regardless of the use of quantitative instruments during the evaluation. Actual clinical assessment reported indeed its weakness, presenting subjective variability and dependence on tester’s experience. However, several factors might influence the validity of awake examination such as experience level of examiner and cultural factors, as seen in this international multicenter study. Level of evidence: Prospective comparative study, Level II.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalKnee Surgery, Sports Traumatology, Arthroscopy
DOIs
Publication statusAccepted/In press - Apr 19 2016

Fingerprint

Multicenter Studies
Anesthesia
General Anesthesia
Hospital Distribution Systems
Anterior Cruciate Ligament Reconstruction
Documentation
Tablets
Knee
Extremities
Joints
Prospective Studies
Skin

Keywords

  • Acceleration
  • ACL
  • Anaesthesia
  • Anterior cruciate ligament
  • Image analysis
  • Inertial sensor
  • Pivot shift
  • Translation

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

Cite this

Lopomo, N., Signorelli, C., Rahnemai-Azar, A. A., Raggi, F., Hoshino, Y., Samuelsson, K., ... The Pivot Study Group, P. S. G. (Accepted/In press). Analysis of the influence of anaesthesia on the clinical and quantitative assessment of the pivot shift: a multicenter international study. Knee Surgery, Sports Traumatology, Arthroscopy, 1-8. https://doi.org/10.1007/s00167-016-4130-1

Analysis of the influence of anaesthesia on the clinical and quantitative assessment of the pivot shift : a multicenter international study. / Lopomo, Nicola; Signorelli, Cecilia; Rahnemai-Azar, Amir Ata; Raggi, Federico; Hoshino, Yuichi; Samuelsson, Kristian; Musahl, Volker; Karlsson, Jon; Kuroda, Ryosuke; Zaffagnini, Stefano; The Pivot Study Group, Pivot Study Group.

In: Knee Surgery, Sports Traumatology, Arthroscopy, 19.04.2016, p. 1-8.

Research output: Contribution to journalArticle

Lopomo, N, Signorelli, C, Rahnemai-Azar, AA, Raggi, F, Hoshino, Y, Samuelsson, K, Musahl, V, Karlsson, J, Kuroda, R, Zaffagnini, S & The Pivot Study Group, PSG 2016, 'Analysis of the influence of anaesthesia on the clinical and quantitative assessment of the pivot shift: a multicenter international study', Knee Surgery, Sports Traumatology, Arthroscopy, pp. 1-8. https://doi.org/10.1007/s00167-016-4130-1
Lopomo, Nicola ; Signorelli, Cecilia ; Rahnemai-Azar, Amir Ata ; Raggi, Federico ; Hoshino, Yuichi ; Samuelsson, Kristian ; Musahl, Volker ; Karlsson, Jon ; Kuroda, Ryosuke ; Zaffagnini, Stefano ; The Pivot Study Group, Pivot Study Group. / Analysis of the influence of anaesthesia on the clinical and quantitative assessment of the pivot shift : a multicenter international study. In: Knee Surgery, Sports Traumatology, Arthroscopy. 2016 ; pp. 1-8.
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AU - Raggi, Federico

AU - Hoshino, Yuichi

AU - Samuelsson, Kristian

AU - Musahl, Volker

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KW - Anaesthesia

KW - Anterior cruciate ligament

KW - Image analysis

KW - Inertial sensor

KW - Pivot shift

KW - Translation

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