Investigation on the distal screw of a trochanteric intramedullary implant (Fi-nail) using a simplified finite element model

Efstathopoulos, N; Nikolaou, VS; Xypnitos, FN; Korres, D; Lazarettos, I; Panousis, K; Kasselouris, EN; Venetsanos, DT; Provatidis, CG

dc.contributor.author	Efstathopoulos, N	en
dc.contributor.author	Nikolaou, VS	en
dc.contributor.author	Xypnitos, FN	en
dc.contributor.author	Korres, D	en
dc.contributor.author	Lazarettos, I	en
dc.contributor.author	Panousis, K	en
dc.contributor.author	Kasselouris, EN	en
dc.contributor.author	Venetsanos, DT	en
dc.contributor.author	Provatidis, CG	en
dc.date.accessioned	2014-03-01T01:33:40Z
dc.date.available	2014-03-01T01:33:40Z
dc.date.issued	2010	en
dc.identifier.issn	0020-1383	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20526
dc.subject	Intramedullary nail	en
dc.subject	Distal screw	en
dc.subject	Finitive element method	en
dc.subject	Fi-nail	en
dc.subject	Biomechanical behaviour	en
dc.subject.classification	Critical Care Medicine	en
dc.subject.classification	Emergency Medicine	en
dc.subject.classification	Orthopedics	en
dc.subject.classification	Surgery	en
dc.subject.other	DYNAMIC HIP SCREW	en
dc.subject.other	PROXIMAL FEMORAL NAIL	en
dc.subject.other	GAMMA-NAIL	en
dc.subject.other	INTERTROCHANTERIC FRACTURES	en
dc.subject.other	PERITROCHANTERIC FRACTURES	en
dc.subject.other	SUBTROCHANTERIC FRACTURES	en
dc.subject.other	INTERNAL-FIXATION	en
dc.subject.other	CONTROLLED TRIAL	en
dc.subject.other	FEMUR	en
dc.subject.other	PLATE	en
dc.title	Investigation on the distal screw of a trochanteric intramedullary implant (Fi-nail) using a simplified finite element model	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.injury.2009.09.006	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.injury.2009.09.006	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Numerous studies have been published conceit-ling the characteristics and the behaviour of the intramedullary devices in the treatment of the intertrochanteric hip fractures However, there is still room for further exploration and exploitation concerning the implant behaviour with respect to the par is of the implant assembly (nail, lag screw and distal screw) Towards this direction, the present paper armed at revealing the effect of the position of the distal screw on the mechanical behaviour of the fixation device For this purpose, a simplified model was developed and analysed with the finite element method In total, five different locations for the distal screw were examined In all cases, the bone was fixed at its distal end while the external load was applied at the tip of the lag screw towards the hip and in the form of orthonormal force components applied individually The results of the FE analyses were illustrated in appropriately formed plots revealing the sensitivity of the behaviour of the implant with respect to the location of the distal screw The main conclusion derived from the present investigation was that moving the distal screw apically decreases the stresses on the distal screw but increases the stresses on the lag screw In turn, this Indicates the existence of a location for the distal spew that compromises these two effects in an optimum way (C) 2009 Elsevier Ltd All rights reserved	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED	en
dc.identifier.doi	10.1016/j.injury.2009.09.006	en
dc.identifier.isi	ISI:000276155600004	en
dc.identifier.volume	41	en
dc.identifier.issue	3	en
dc.identifier.spage	259	en
dc.identifier.epage	265	en