title: Using three-dimensional computational modeling to compare the geometrical fitness of two kinds of proximal femoral intramedullary nail for Chinese femur.
abstract: The aim of this study was to use three-dimensional (3D) computational modeling to compare the geometric fitness of these two kinds of proximal femoral intramedullary nails in the Chinese femurs. Computed tomography (CT) scans of a total of 120 normal adult Chinese cadaveric femurs were collected for analysis. With the three-dimensional (3D) computational technology, the anatomical fitness between the nail and bone was quantified according to the impingement incidence, maximum thicknesses and lengths by which the nail was protruding into the cortex in the virtual bone model, respectively, at the proximal, middle, and distal portions of the implant in the femur. The results showed that PFNA-II may fit better for the Chinese proximal femurs than InterTan, and the distal portion of InterTan may perform better than that of PFNA-II; the anatomic fitness of both nails for Chinese patients may not be very satisfactory. As a result, both implants need further modifications to meet the needs of the Chinese population.
authors: Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
authors: Sheng
authors: S
authors: Zhang
authors: Kairui
authors: K
authors: Zhang
authors: Yimin
authors: Y
authors: Wang
authors: Wei
authors: W
authors: Feng
authors: Bowei
authors: B
authors: Wang
authors: Bin
authors: B
authors: Yu
mesh_terms: D044466:Asian People; D001858:Bone Nails; D002102:Cadaver; D003198:Computer Simulation; D005269:Femur / Q000033:anatomy & histology*; D005594:Fracture Fixation, Intramedullary / Q000295:instrumentation*; D006801:Humans; D008953:Models, Anatomic; D014057:Tomography, X-Ray Computed