Clinical evaluation of a new noninvasive ankle arthrometer

The Physician and Sportsmedicine
Tanja NauckAlbert Gollhofer

Abstract

A nonradiographic arthrometer was developed to objectively quantify anterior talar drawer instability in stable and unstable ankles. Diagnostic validity of this device was previously demonstrated in a cadaver study. The aim of the present study was to validate the ankle arthrometer in an in vivo setting. Twenty-three subjects participated in the study. An orthopedic surgeon first performed a manual anterior talar drawer test to classify the subjects' ankles as stable or unstable. The subjects were then evaluated using the ankle arthrometer, and filled out a validated self-reported questionnaire (German version of the Foot and Ankle Ability Measure [FAAM-G]). Ankle stiffness was calculated from the low linear region (40-60 N) of the load deformation curves obtained from the ankle arthrometer. Reliability testing of these stiffness values was done based on load deformation curves, with 150 and 200 N maximum anterior drawer loads applied in the ankle arthrometer. Using the manual anterior drawer test, 16 ankles were classified as stable and 7 were classified as unstable. Arthrometer stiffness analysis differentiated stable from unstable ankles (P = 0.00 and P = 0.01, respectively). Test-retest demonstrated an accurate reliability ...Continue Reading

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Citations

Jul 26, 2014·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Raymond BestPeter G Brüggemann
Apr 19, 2015·Journal of Orthopaedic Surgery and Research·Heinz LohrerAlbert Gollhofer
Oct 15, 2013·British Journal of Sports Medicine·Dominic GehringAlbert Gollhofer
Dec 17, 2014·Foot & Ankle International·Cathleen N BrownJupil Ko
Mar 26, 2019·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Markus WenningDominic Gehring
May 8, 2019·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Dominic GehringHeinz Lohrer
Jun 15, 2019·Journal of Orthopaedic Surgery and Research·Heinz LohrerDominic Gehring
Jun 18, 2021·The Journal of Foot and Ankle Surgery : Official Publication of the American College of Foot and Ankle Surgeons·Francisco Guerra-PintoJosé Guimarães Consciência

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