[Antero-lateral impingement syndrome and evaluation of chronic post-traumatic instability in the talo-crural joint]

The aim of this paper was to asses whether the antero-lateral impingement syndrome is a sequel of ligamentous-capsular element failure in the talo-crural joint. The authors evaluated stability of the talocrural joint on a stand by one of the authors (E. G.). Using Zwipp's method and the authors own method the kind and degree of instability were assessed. Radiological features of antero-lateral instability were found in 17 patients (4.6%)--7 female (1.9%) and 10 male patients (2.7%) aged from 25 to 54 years. 4 grade II antero-lateral instabilities 2 grade III lateral instabilities and 1 grade V instability concomitant to antero-lateral impingement were found in the female patients. Whereas among the male patients 6 grade II antero-lateral instabilities and 4 grade III instabilities were found.