TIBIO-TALAR STABILITY IN BIMALLEOLAR ANKLE FRACTURES - A DYNAMIC INVITRO CONTACT AREA STUDY

被引：65

作者：

CLARKE, HJ ^{[1
]}

MICHELSON, JD ^{[1
]}

COX, QGK ^{[1
]}

JINNAH, RH ^{[1
]}

机构：

[1] JOHNS HOPKINS UNIV,FRANCIS SCOTT KEY MED CTR,BALTIMORE,MD 21218

来源：

FOOT & ANKLE | 1991年 / 11卷 / 04期

关键词：

D O I：

10.1177/107110079101100407

中图分类号：

R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];

学科分类号：

摘要：

A dynamic weight-bearing model has been developed in a cadaveric ankle model to assess the contact areas of the talus in varying degrees of bimalleolar ankle fractures. A surgically created transverse fibula osteotomy with up to 6 mm of displacement did not cause a significant change in the contact area. Sectioning of the deltoid ligament, regardless of fibular displacement, created a 15% to 20% decrease in the contact area (P < .001). This model represents a clinically relevant situation, as it examines motion of an unconstrained, axillary loaded ankle. Additional medial side disruption increases ankle instability by allowing anterior and lateral translation of the talus out of the mortise. Isolated lateral malleolar displacement does not appear to cause ankle instability.

引用

页码：222 / 227

页数：6