Author/Editor		Veselko, Matjaž; Polajnar, Janez; Trobec, Roman
Title		Vtisni zlom golenične grče - tipična poškodba zareznega smučanja
Translated title		Impression fracture of the tibial condyles - tipical carving ski injury
Type		članek
Source		Zdrav Vestn
Vol. and No.		Letnik 77, št. 10
Publication year		2008
Volume		str. 693-8
Language		slo
Abstract		Background Depression fractures of the tibial condyles due to sudden turn of one ski are more frequent ski injury than it used to be. There seems to be a correlation between this injury and carving skies. Methods All depression fractures of the tibial condyles due to skiing injuries during 2004 and 2005, have been analysed with regard to mechanism of injury and fracture type. To explain the mechanism of injury due to sudden turn of ski with carved edges, mathematical model was used. Results 48 patients were treated for fracture of the proximal tibia. 18 of these were depression fractures of a tibial condyle, 13 lateral and 5 medial. All skiers skied on skies with carved edges. Mechanism of injury was in all cases of fracture of the medial condyle sudden turn of the ski inwards and in lateral condyle, outwards. Mathematical model of the influence of carving on the knee injury type has shown that force transmitted to lower limb is dependant on velocity and on the radius of the curvature at ski turn, and this is determined by the radius of the curvature of the edge of the ski. This force can be multiplied by additional decrease of the radius due to instant additional bowing of skies, for instance when running into a sharp depression. Conclusions In this paper we present typical mechanism of the fracture of the tibial condyle, due to sudden turn of the ski with carved edges. Mathematical model explains how the force transmitted to the knee multiplies due to sudden decrease of the carved turn radius, or due to
Descriptors		SKIING TIBIAL FRACTURES KNEE INJURIES BIOMECHANICS