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'''[[Projectional radiography]] ("X-ray") of dysplasia of the [[hip joint]]''' (also termed developmental dysplasia of the hip (DDH)) is where the socket portion does not fully cover the ball portion, resulting in an increased risk for [[joint dislocation]].<ref name=OA2013>{{cite web |url=http://orthoinfo.aaos.org/topic.cfm?topic=A00347 |title=Your Orthopaedic Connection: Developmental Dysplasia of the Hip |date=October 2013}}</ref>