In Vivo Talocrural Joint Contact Mechanics With Functional Ankle Instability.

Background: Functional ankle instability (FAI) may involve abnormal kinematics and contact mechanics during ankle internal rotation. Understanding of these abnormalities is important to prevent secondary problems in patients with FAI. However, there are no in vivo studies that have investigated talocrural joint contact mechanics during weightbearing ankle internal rotation.

Fibular malalignment in individuals with chronic ankle instability.

Study Design: Case series.

Objectives: To determine whether abnormal fibular alignment is present in individuals with chronic ankle instability (CAI) using 3-D analysis of computed tomography (CT)-based bone models.

Background: A positional difference of the distal fibula in individuals with unilateral CAI, when compared to the contralateral side, has been suggested.

The effects of a semi-rigid brace or taping on talocrural and subtalar kinematics in chronic ankle instability.

Background: A semi-rigid brace or taping is often used to prevent giving-ways in the joint with chronic ankle instability (CAI). However, it remains unknown whether the application of a semi-rigid brace or taping modifies abnormal kinematics in CAI joints. The objective of this study was to determine if the application of a semi-rigid brace or taping of the ankle normalizes abnormal weight-bearing kinematics in CAI joints during ankle internal rotation in plantar flexion.

In vivo kinematics of the talocrural and subtalar joints during weightbearing ankle rotation in chronic ankle instability.

Background: Chronic ankle instability (CAI) results in abnormal ankle kinematics, but there exists limited quantitative data characterizing these alterations. This study was undertaken to investigate kinematic alterations of the talocrural and subtalar joints in CAI.

Methods: A total of 14 male patients with unilateral CAI (mean age = 21.