Stress Tests for Ligamentous Lisfranc Instability:

Foot & Ankle Orthopaedics

GeorgeSmith¹ 

关键词: Ligamentous Lisfranc injury;    Stress tests;    dorsal displacement;    cadaveric study;   

DOI  :  10.1177/2473011418S00454

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Category:TraumaIntroduction/Purpose:The diagnosis of Lisfranc ligament disruption is notoriously difficult. Radiographs and MRI scans are often ambiguous therefore a ‘stress-test’ under anaesthesia is commonly utilised. Two midfoot stress-tests are in current practice, namely the varus first ray stress-test and the pronation abduction test. The optimal type of stress-test is not however evaluated in the literature. We hypothesised that after the loss of the main plantar stabiliser (the Lisfranc ligament) the patient would demonstrate dorsal instability, not the classic 1st/2nd metatarsal diastasis commonly described. We therefore devised a push-up test (placement of a force under the 2nd metatarsal to elevate the base on the lateral radiograph). We aimed to initially test our hypothesis and the previously described stress tests on a cadaveric model.Methods:Twelve fresh frozen cadaveric specimens without previous foot injury were used. The 2nd tarsometatarsal joint was exposed and the Lisfranc ligament and...

【 授权许可】

CC BY