Hip POCUS for the Diagnosis of Pediatric Hip Effusion.

Limping is a common complaint among children presenting in the Pediatric ED the evaluation of a limp among infants and toddlers is challenging doe to the lack of specific history and the difficulty in locating the pain - therefore hip sonography is frequently used in the clinical evaluation of these children. Sonographic examination for the diagnosis of hip effusion is routinely performed by the radiologist, however, since the integration of Point of care Ultrasound (POCUS) as part of the clinical evaluation of children in the ED in many application - Hip pocus is frequently performed by pediatric Emergency Medicine physicians. The existing data on hip POCUS is scarce and comprised of small uncontrolled studies. We aimed to examine the specificity and sensitivity of hip Pocus performed by pediatric emergency physicians by comparing it to the scan performed by the radiologist. the primary outcome measurement is the ability of the POCUS exam to identify or rule out the existence of hip effusion as demonstrated in the formal radiological Ultrasound scan.