125 Evaluation of Normal Reference Ranges for Ultrasound Measurements of the Hip Joint in Elderly Patients

Abstract

Ultrasound can be used to evaluate for effusion of the hip joint, which may be useful in screening for septic arthritis or occult injury. The current reference range for this measurement is based on decades- old ultrasound machine technology and hip joint capsule size was used as a surrogate for presumed presence of hip effusion. Normal range is a hip joint capsule (measured from anterior femoral neck to posterior iliopsoas) is <7mm or a 1mm or less difference between sides). The primary objective of this study was to determine whether the current reference range for this measurement is accurate and is sufficiently specific for abnormal hip joint capsule size in the elderly population.