Computed tomography (CT) with bony windows is likely to show more clearly the extent and dimensions of any condylar destruction as well as other important fea­tures important when considering surgical intervention (fossa anatomy, osteophytes or other loose bodies within the joint, EAC or middle ear abnormalities, or other cra­niomaxillofacial ndings that may require evaluation or treatment) [9]. CT is particularly helpful in cases where alloplastic joint replacement is planned, but would be important for any major surgical intervention. Cone beam computed tomography (CBCT) is frequently used as an in-ofce modality of obtaining cross-sectional imaging for this purpose (. Fig.11.6). It is the author’s opinion that CBCT may be helpful for screening and in some cases for following progression of disease, but that medical-grade CT is more useful for planning of major surgery (i.e., joint replacement or distraction). CT may also be used to print models for diagnosis and planning purposes (. Fig.11.7).