Femoral version in acute slipped capital femoral epiphysis.

Seven patients with seven acute slipped capital femoral epiphyses (SCFE) had computed tomography (CT) scan determination of femoral version. Version value differences were compared between the involved and uninvolved sides, and each was compared with a standard value for age. Comparison was also made with chronic slipped femoral version values. As compared to the standard of 20 degrees, the acute, involved side femoral version was 9.3 degrees (p = 0.057). Comparisons of involved and uninvolved sides showed no significant difference (p = 0.25). Analysis of differences of bilateral femoral version of patients with acute SCFE with that of patients with chronic SCFE version showed a significant difference (p = 0.009). Version in patients with acute SCFE more closely resembles the normal value than does that of patients with chronic SCFE, further emphasizing the uniqueness of the acute type of SCFE.