(A) Bone scans of three different patients, each with three different diagnoses: degenerative arthritis, metastatic cancer, and acute trauma. The point is that all the scans look alike, because they only measure hypermetabolism. Thus bone scans are not independent studies but must be correlated with clinical data to be meaningful. (A) This patient has degenerative joint disease in multiple sites (see arrows indicating increased uptake in the cervical spine, wrist, ankle, and toes). The arrowhead indicates a total joint prosthesis at the knee. (B) This patient suffered a contusion to the gluteus medius muscle during injury in a football game. The increased uptake was an early indication of myositis ossificans developing in the muscle. (C) This patient has known lung cancer, and the bone scan is done to identify the distribution of metastatic lesions in the skeleton. The increased uptake at the right scapula and right shoulder shows areas of metastatic bone cancer. Source: GENERAL PRINCIPLES OF MUSCULOSKELETAL IMAGING, Fundamentals of Musculoskeletal Imaging Citation: McKinnis LN. Fundamentals of Musculoskeletal Imaging; 2014 Available at: https://fadavispt.mhmedical.com/DownloadImage.aspx?image=/data/books/1899/mckfunda_fig-1-37.png&sec=141188563&BookID=1899&ChapterSecID=141188303&imagename= Accessed: October 19, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved