Hilgenreiner's line is a horizontal line drawn on an AP radiograph of the pelvis running between the inferior aspects of both triradiate cartilages of the acetabulums.
[1] It is named for Heinrich Hilgenreiner.
[citation needed] Used in conjunction with Perkin's line or the acetabular angle, Hilgenreiner's line is useful in the diagnosis of developmental dysplasia of the hip.
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