Kathryn Reimer & Rebecca Leja

Pilot Project: Does the Use of a Petrie Abduction Splint Post Hip Containment Surgery Maintain ROM and Hip Location in Children with Cerebral Palsy GMFCS Levels IV and V?

Authors: Kathryn Reimer, Rebecca Leja, Daphne O’Young, Sonja Magnuson, & Dr. Jill Zwicker

Background. Children with cerebral palsy and similar conditions are at risk for hip joint subluxation or dislocation, which often leads to pain and restricted participation in meaningful occupations. Treatment involves hip containment surgery, followed by application of a Petrie hip abduction splint to maintain hip position. Although the Petrie hip abduction splint is standard of care, there is currently no evidence to show its effectiveness. Aim. To provide preliminary evidence to support or refute the effectiveness of the Petrie hip abduction splint in maintaining hip position after hip containment surgery. Methods. This two-year pilot study used a single-subject research design to assess three outcomes: (1) range of motion as measured by goniometry; (2) hip migration percentage as identified on x-rays; and (3) quality of life using the CPCHILD questionnaire. Data were gathered through six pre- and post-intervention data points over a one-year period. Further, self/caregiver reported wear time of the splint was collected over the one year period to be compared with each subject’s own outcome measures. Lastly, demographic information, the type of hip containment surgery, and participants’ physical description were collected for future analysis. Preliminary Results. Based on two participants and preliminary data, results  indicated that the Petrie hip abduction splint may be associated with maintenance of  hip migration percentage; however, the range of motion results were inconclusive.  Longer-term data and quality of life results were not available at the time of publication. Future Implications. This pilot study is ongoing. Findings will determine if the Petrie hip abduction splint is effective for long-term hip positioning.  The results will inform future studies regarding timing of splint implementation, the impact of GMFCS level and individual demographic factors/ physical presentation on splint efficacy.