Ultrasound Evaluation of the Hip.

Purpose of Review: Non-arthritic hip pain is a common presentation among the general population, with many possible contributing etiologies. While radiographs, computed tomography, and magnetic resonance imaging are all within the standard diagnostic workup, ultrasonography has emerged as a facile tool given its low cost, lack of radiation, and dynamic application. This article reviews the utility of ultrasound (US) in evaluation of non-arthritic hip pain and its ability to detect pathology both statically and dynamically in comparison and as an adjunct to standard imaging modalities. Recent Findings: Current research highlights applications of US to commonly treated hip pathologies including femoroacetabular impingement, labral tears, hip microinstability, and various other extra-articular phenomena. While static evaluation seems to add similar value to that of radiography, several novel protocols have been developed that allow for dynamic evaluation of joint biomechanics, including extent and onset of impingement and femoral head translation, that cannot be assessed with more standard imaging modalities. Summary: In evaluation of patients with non-arthritic hip pain, US is a low cost, easy-to-use, dynamic bedside tool that can aid in the diagnostic workup of patients with a broad number of pain generators. While literature demonstrates that its static evaluation often does not quite reach the accuracy of more advanced modalities, dynamic assessment of the hip joint has the potential to be quite useful in routine evaluation. [ABSTRACT FROM AUTHOR]