Page 248 - Demo

Chapter 9246would also increase the surface area available for bacterial colonization by pumping actions, potentially resulting in the formation of a biofilm and in turn an acute infection. Fig. 3: A more prominent jaw angle can be used in the mandibular component to avoid or compensate for asymmetries.As previously discussed, a rigid fixation is achieved by compressing the HXLPE onto a thin titanium scaffold (Figure 1d). Tests performed in sheep have demonstrated that this type of fixation is protective against infection, while at the same time counteracting undue deformation over time.(18) In order to allow for replacement of the fossa component (typically after 20 years or more) no residual scaffold was provided at the interface between the fossa component and the skull base, which is likely thin at the middle cranial fossa and easily out-fractured, as to prevent excessive force during replacement.Because the design of the joint is specific to the patient, care should be taken when extending the fixation plate of the fossa component anteriorly (not surpassing the midtubercular level to protect the frontal branch of the facial nerve) and posteriorly (making use of the non-pneumatized part of the temporal squama).Nikolas de Meurechy NW.indd 246 05-06-2024 10:14