Nuclear medicine and the failed joint replacement: Past, present, and future

Figure 6 Normal ^99mTc-methylene diphosphonate bone scans of bilateral hip (left) and right knee (right) prostheses. A normal bone scan is defined as a scan in which periprosthetic activity is indistinguishable from adjacent, non-articular bone. The bone scan has a high negative predictive value and therefore a normal study makes it very unlikely that the patient’s symptoms are related to the prosthesis.