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Ankle Joint

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...

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Relationship between mechanical ankle joint laxity and subjective function.

Tricia Hubbard-Turner¹

¹The University of North Carolina Charlotte, 9201 University City Blvd, Charlotte, NC 28223, USA. thubbar1@uncc.edu

Foot & Ankle International

|October 12, 2012

Summary

This summary is machine-generated.

Increased ankle laxity, particularly in the anterior and inversion directions, is linked to poorer function in individuals with chronic ankle instability (CAI). Addressing laxity may improve patient outcomes.

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Area of Science:

Orthopedics
Sports Medicine
Biomechanics

Background:

Chronic ankle instability (CAI) is associated with increased ankle joint laxity.
The direct link between this increased laxity and functional deficits in CAI patients remains unclear.

Purpose of the Study:

To investigate the relationship between mechanical ankle joint laxity and subjective functional deficits in individuals with CAI.

Main Methods:

120 participants with unilateral CAI underwent mechanical joint stability assessment using an instrumented ankle arthrometer.
Ankle motion (anterior/posterior translation, inversion/eversion) and subjective function (Foot and Ankle Disability Index - FADI, FADI-Sport - FADIS) were measured.
Bivariate correlations were performed to analyze the relationships between laxity and functional scores.

Main Results:

A strong negative correlation was found between anterior laxity and FADIS scores (r = -0.88, p < 0.0001), indicating increased laxity with decreased function.
Significant negative correlations were also observed between anterior laxity and FADI, and inversion laxity and both FADI and FADIS.

Conclusions:

Ankle joint laxity, specifically anterior and inversion laxity, is related to subjective functional limitations in patients with CAI.
Increased laxity may be a contributing factor to the functional deficits experienced by individuals with CAI.
Preventative strategies targeting increased laxity post-ankle sprain could enhance patient function.