Abstract：
:Failures of proximal femoral nails that treat unstable femoral fractures have been reported. In this communication, a finite element model to include a proximal femoral nail within a fractured femur was used to carry out preliminary investigations into configurations of single or double lag screws. The effects of the different types of fracture were investigated. The results show that in order to share the load evenly between two lag screws, a good configuration seems to be to have a slightly larger screw above the lower screw. This also ameliorates stresses in the nail at the lag screw insertion holes. However, using two screws in this way can lead to large stresses in the cancellous bone in the femoral head, and these stresses may be significant in the initiation of cut-out.
journal_name
Med Eng Physjournal_title
Medical engineering & physicsauthors
Wang CJ,Brown CJ,Yettram AL,Procter Pdoi
10.1016/s1350-4533(00)00081-3subject
Has Abstractpub_date
2000-11-01 00:00:00pages
613-24issue
9eissn
1350-4533issn
1873-4030pii
S1350-4533(00)00081-3journal_volume
22pub_type
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