title: RETRACTED ARTICLE: Clinical effectiveness of continuous passive motion (CPM) following femoroacetabular impingement surgery in adolescents.
abstract: OBJECTIVE
  This study hypothesizes that the use of continuous passive motion (CPM) following open femoroacetabular impingement (FAI) surgery in the adolescent population improves clinical outcomes in terms of the modified Harris hip score (mHHS).
  
  
  METHODS
  Twenty-nine symptomatic adolescent FAI patients were postoperatively divided into one of three groups; no CPM, two days of inpatient CPM, and two weeks of CPM. mHHS was used preoperatively and postoperatively at six weeks, three months, six months, and nine months in all cases. Kruskal-Wallis (KW) analysis was performed to determine statistical differences in mHHS. mHHS was then re-evaluated using the Mann-Whitney test.
  
  
  RESULTS
  There were no statistically significant differences in hip scores between the three groups preoperatively (p = 0.158). There were statistically significant differences (p < 0.001) in mHHS between the three groups at all postoperative time periods. The group that received two weeks of CPM had the best outcome scores.
  
  
  CONCLUSIONS
  The results of this study suggest that postoperative CPM use following open hip preservation surgery for symptomatic FAI in adolescents improves clinical outcomes. These benefits seem to be related to the duration of CPM.
  
  
  METHODS
  Retrospective comparative study, Level III. Patients treated one way compared with patients treated another way at the same institution.
authors.affiliation: Rady Children's Hospital and Health Center, 3030 Children's Way, Suite 410, San Diego, CA 92123 USA.
authors.forename: Harish
authors.initials: H
authors.lastname: Hosalkar
authors.forename: James D
authors.initials: JD
authors.lastname: Bomar
keywords: Adolescents; Continuous passive motion (CPM); Femoroacetabular impingement; Hips
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