Arthritis: Hip and Sacroiliac Joint

Arthritis of the hip and sacroiliac joint (SIJ) presents a complex challenge in diagnostic imaging and management. This chapter provides a comprehensive review of the current imaging modalities employed in the evaluation of hip and SIJ arthritis, with an emphasis on the latest advancements and clinical applications. The role of various imaging techniques, including plain radiography, computed tomography (CT), magnetic resonance imaging (MRI), and ultrasound, is discussed in detail. Each modality’s strengths and limitations are analyzed to offer insights into their appropriate use in different clinical scenarios. Special attention is given to the emerging technologies and imaging biomarkers that enhance diagnostic accuracy and disease monitoring. The chapter also addresses the challenges associated with imaging interpretation, including the differentiation between inflammatory and degenerative changes and the impact of these findings on treatment decisions. Recent literature is reviewed to incorporate the latest evidence and guidelines, providing a contemporary perspective on best practices in the imaging of hip and SIJ arthritis. Practical recommendations are offered for clinicians and radiologists to improve diagnostic efficiency and patient outcomes. Overall, this chapter aims to equip readers with a thorough understanding of the current imaging landscape for hip and SIJ arthritis, facilitating better diagnosis and management of these often debilitating conditions.