Validity and reliability of an ultrasound measurement of the free length of the Achilles tendon.

Introduction: Valid length measurements of the different segments of the Achilles tendon are needed in order to investigate if differential elongation of the Achilles tendon takes place after rupture. The purpose of this paper was to present data concerning the accuracy and reliability of an ultrasound measurement of the free part of the Achilles tendon.

Methods: Both legs of 19 non-injured subjects were examined by magnetic resonance imagining (MRI) and ultrasound.

Validation of a novel ultrasound measurement of achilles tendon length.

Purpose: A clinically applicable and accurate method for measuring Achilles tendon length is needed to investigate the influence of elongation of the Achilles tendon after acute rupture. The purpose of this study was to develop and validate an ultrasonographic (US) length measurement of the Achilles tendon-aponeurosis complex.

Methods: Both legs of 19 non-injured subjects were examined by magnetic resonance imaging (MRI) and US.