A study was made of thirty-nine traumatic posterior dislocations of the
hip that had remained unreduced for from three days to nine years. The
purpose of the review was to compare the results of closed and open
reduction with those of primary reconstructive surgery. Three of the twenty
hips that had closed or open reduction had good results as compared with
ten of the thirteen hips that had primary reconstructive surgery. Six hips
that were left dislocated had uniformly poor results.