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Internal Derangement of the Hip 

Internal Derangement of the Hip
Chapter:
Internal Derangement of the Hip
Author(s):

Imran M. Omar

DOI:
10.1093/med/9780190938178.003.0108
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date: 09 December 2021

Chapter 107 discusses the hip and its component tissues, including the bones, labrum, synovial tissues, muscles, and tendons, and covers the MRI appearances of many of the most common pathologies that occur in and around the hip joint. The hip is a ball-and-socket joint consisting of the femoral head and the cup-shaped acetabulum. Because of its shape, the hip allows multi-axial movements, including flexion/extension, abduction/adduction, and internal/external rotation. A number of supporting structures, including the acetabular labrum and joint capsule, surrounding muscles and tendons, and bursae, help stabilize the hip and allow for a smooth range of motion. Injuries to any of these structures can result in hip pain and loss of function. MRI has become the test of choice to assess hip internal derangement because of its superior assessment of soft tissues and bone marrow and its contrast resolution, which improves conspicuity of pathologic conditions.

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