This chapter basically talks about the imaging studies, which includes X-ray, magnetic resonance imaging (MRI), computed tomography (CT), bone scan, and ultrasound (US). The purpose of imaging studies should be to provide accurate anatomic information that can be correlated to a patient’s symptoms. X-rays have the advantage of being relatively easy and inexpensive to obtain. X-rays also have the advantage of being able to take multiple views to show specific anatomic structures. MRI uses interaction between magnetic forces and radio waves to create detailed images of the body. CT scans use multiple X-rays to produce cross-sectional layers to provide detailed views of the body. Bone scan is a nuclear imaging test that can detect abnormalities in bone turnover. Bone scans are useful in detecting occult fractures, inflammatory processes such as osteomyelitis and metastatic disease. US imaging is based on the interaction of high frequency sound waves with tissues it encounters. The US transducer emits sound waves that are then reflected back to the transducer to produce an image.