Experimental Study of Dynamics of Ankle Joint (II)
Date Issued
1999-07-31
Date
1999-07-31
Author(s)
林銘川
DOI
882314B002315
Abstract
Due to the weight bearing nature, human
ankle joint complex plays an important role in
the mechanics of locomotion. In present
study, pressure sensitive films were used to
define the contact location and area at various
inclinations. Then, we measure the articular
surfaces with a 3D optical scanning system.
Data were fitted with a bivariate parametric
function and the surface curvature maps were
constructed. Kinematics of ankle joint
showed strong correlation with the joint
surface curvature maps. As the ankle
dorsiflexed, the contact areas of the joint
shifted laterally which highlight the
importance of lateral malleolus in ankle
stability. The ankle joint contact area
decreases slightly with the angle of inclination,
however, the congruency increases to
compensate the loss. This might be one of
the reasons why spontaneous ostesaithitis is
not common at the ankle joint.
Subjects
Kinematics
Ankle joint
Surface
Curvature
Congruence
Publisher
臺北市：國立臺灣大學醫學院復健科
Type
other
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