The objective of this study was to compare the gait variability of
patients with isolated anterior cruciate ligament (ACL) deficiency
(experimental group) with that of healthy individuals (control group).
The hypothesis was that the gait variability of the experimental group
would be higher than the control group. The experimental group consisted
of 20 men with an ACL tear and the control group consisted of 20 healthy
men without any neurological and/or musculoskeletal pathology or injury.
The gait acceleration signal was analysed using the Gait Evaluation
Differential Entropy Method (GEDEM). The GEDEM index of the experimental
group in the medio-lateral axis was significantly higher than that of
the control subjects. A receiver operating characteristic (ROC) analysis
was used to assess the diagnostic value of the method and to determine a
cut-off entropy value. The GEDEM cut-off value had a 95.6% probability
of separating isolated ACL patients from healthy subjects
