PMID: 8940790Sep 1, 1996Paper

Anterior tibia spine fracture in children: follow-up evaluation by biomechanical studies

Zhonghua yi xue za zhi = Chinese medical journal; Free China ed
Y H LeeW H Lo

Abstract

The treatment of anterior tibial spine (ATS) fracture in children is in controversy. Previous studies have shown that most of the children who sustained ATS fractures have objective evidence of the anterior cruciate ligament (ACL) laxity at follow-up, but detailed biomechanical analysis of the knee joint has seldom been performed. Eight ATS fractures in children at a mean age of 12 years were treated from 1989 to 1994. Two were of Meyer's classification type I, 3 were of type II, and 3 were of type III. The treatment varied from casting to open reduction & internal fixation (ORIF) by pulling through suture or biofix absorbable screw. Patients were followed with radiological, clinical and biomechanical analysis. KT 1000 knee arthrometer was used to evaluate the laxity of ACL. Cybex isokinetic machine was used to evaluate knee extensor and flexor strength. During an average follow-up period of 47 months, all fractures showed to unite well on X-ray except 1 untreated type I fracture who had malunion. Only one had subjective complaint of instability, but 3 had clinical signs of instability. Objective evidence of laxity, determined by KT-1000 arthrometer, was noted in 4 patients. Decreased muscle strength, determined by Cybex isokin...Continue Reading

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