![]() ![]() It measures how well the acetabulum (“hip socket”) covers the head of the femur (“ball” of the hip joint). ![]() 39, 40 Even with US screening, children with hip dysplasia can be diagnosed late, and one concern. 3, 36, 37, 38 The benefit of screening all children with US is controversial. This is the most commonly measured angle to determine if a person has hip dysplasia. Ultrasonography (US) has been of substantial benefit in the assessment and treatment of children with developmental dysplasia of the hip (DDH). Compared with static imaging, dynamic ultrasound examination of the infant hip. The capital femoral epiphysis (blue circles), not yet ossified, should normally lie in the lower inner quadrant. hip is considered normal, and developmental dysplasia is ruled. Instead, he or she will combine information from the patient’s history, physical examination, and imaging to determine the best plan of care. The two vertical lines (red) are Perkins lines. ![]() A good hip dysplasia expert will not make a treatment plan based solely on measurements. Other findings may include shallow acetabulum with mild sclerosis as well as formation of a false acetabulum. It is important to keep in mind that measurements are not always black and white, and may vary slightly between different providers (“inter-rater reliability”) and sometimes even within the same provider on multiple occasions (“intra-rater reliability”). Puttis triad for developmental dysplasia of the hip includes: superolateral displacement of the proximal femur. These are some of the most common measurements associated with evaluation of hip dysplasia. Hip dysplasia experts may order a variety of special imaging and tests to help determine the best treatment for a patient. ![]()
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