With regard to material design for porous titanium-based femoral prosthesis, stress analysis is required to meet the strength requirement.
Prosthesis survival analysis was calculated using the Kaplan-Meier method with exchange of the cup, the stem, or both components as endpoint.
In this paper, a route to digitise the design of an existing implant is described, consisting of transfer of CT data, design of the prostheses, FE analysis, rapid manufacturing from titanium, and quality control.
Table 1 Description of cranial prostheses characteristics Analysis Case 1 Case 2 Intraoperative adjustment time 8 min 16 min Precision to cranial defect Exact Exact Intraoperative exothermic reaction None None Cranial symmetry Exact Exact Cost Low Low The left-hand column specifies the parameters that were evaluated on each prosthesis.
In a previous study comparing the CKS and the PFC prostheses, kinematic analysis supported the suspicion that the CKS design has larger AP translations than the PFC design (Ploegmakers et al. 2010).
Consistent load and motion cycles representing conditions at the ankle joint replaced exactly with the prosthesis design under analysis were taken from a corresponding mechanical model of the stance phase of walking.
Standard and marker-free radiostereometry was then done repeatedly with gradual shifts of position of the prosthesis between each analysis.
Nevertheless, the retrieval of failed prostheses and the analysis of human implanted devices is one of the most valuable tools to provide information about prostheses that have been submitted to clinical loading and biological and chemical micro-environment during their stay in the body [ 13].
We thus develop a program, THR Simulator, to directly synthesize digital radiographs of prostheses for further analysis.
The present study aimed to design and test a prototype device able to evaluate the primary mechanical stability of a cementless prosthesis, based on vibration analysis.
Type of fixation was registered in all but 149 cases, which were excluded from the analysis addressing prosthesis fixation (Table 1 and Figure 4).
