Background Developmental dysplasia of the hip (DDH) remains common. If detected early,
DDH can usually be corrected with conservative management. Late presentations often
require surgery and have worse outcomes. Objective We estimated the risk of undergoing
surgery for DDH by age 3 years before and after the introduction of enhanced DDH
detection services. Design Retrospective cohort study. Setting Scotland, 1997/98–2010/11.
Patients All children. Methods Using routinely collected national hospital discharge records …

Objective We estimated the risk of undergoing surgery for DDH by age 3 years before and
after the introduction of enhanced DDH detection services. Design Retrospective cohort
study. setting Scotland, 1997/98–2010/11. Patients All children. Methods Using routinely
collected national hospital discharge records, we examined rates of first surgery for DDH by
age 3 by March 2014. Using a difference in difference analysis, we compared rates in two
areas of Scotland before (to April 2002) and after (from April 2005) implementation of …