Discussion about different cut-off values of conventional hamstring-to-quadriceps ratio used in hamstring injury prediction among professional male football players.

Objective: To measure the sensitivity and specificity of differences cut-off values for isokinetic Hcon/Qcon ratio in order to improve the capacity to evaluate (retrospectively) the injury of hamstring muscles in professional soccer screened with knee isokinetic tests.

Design: Retrospective study.

Methods: Medical and biomechanical data of professional football players playing for the same team for at least one season between 2010 and 2016 were analysed.

[Postural control strategy in patients with anterior cruciate ligament deficiency].

Unlabelled: Dysfunction of the knee joint caused by injury of the anterior cruciate ligament is associated not only with mechanical joint destabilization but also damage of receptors in the ligament responsible for joint proprioception. Sensory disorders associated with damage of receptors in the ligaments may produce abnormalities in the posture control. The study aimed at evaluating postural control strategy in patients with chronic anterior cruciate ligament deficiency and determining a relationship between clinical assessment, subjective evaluation of knee joint functioning, and type of postural control.