Jump landing among chronic ankle instability individuals who did or did not attend rehabilitation at the time of injury.

Objectives: The purpose was to compare vertical ground reaction forces and sagittal-plane energy dissipation patterns of the lower extremity during a single-limb jump-stabilization task between individuals with chronic ankle instability who did or did not attend rehabilitation after their initial ankle sprain.

Design: Cross-sectional.

Setting: Research laboratory.

Acceleration and Jerk After a Jump Stabilization Task in Individuals With and Without Chronic Ankle Instability.

Studies have demonstrated that individuals with chronic ankle instability (CAI) have diminished dynamic stability. Jerk-based measures have been utilized to examine dynamic balance because of their ability to quantify changes in acceleration and may provide an understanding of the postural corrections that occur during stabilizing following a jumping task. The purpose of this study was to compare acceleration and jerk following a jump stabilization task between individuals with CAI and the uninjured controls.

Continued validation and known groups validity of the Quick-FAAM: Inclusion of participants with chronic ankle instability and ankle sprain copers.

Objective: To examine the factor structure and validity of the Quick-FAAM in individuals with chronic ankle instability (CAI) and those classified as ankle sprain copers (ASC).

Design: Cross-sectional.

Setting: Laboratory.

A laboratory captured 'giving way' episode during a single-leg landing task in an individual with unilateral chronic ankle instability.

An episode of 'giving way' at the ankle is described as excessive inversion of the rearfoot that does not result in an acute ankle sprain and is a unique feature associated with chronic ankle instability (CAI). Limited data currently exists describing the preparatory movement patterns and those that occur during an episode of 'giving way. Therefore, this case report describes the movement patterns and the forces generated during an unintentional 'giving way' captured while an individual with unilateral CAI was performing a single-leg landing task in a research laboratory.