Reliability of Migration Index in Subluxated Femoral Head in Spastic Cerebral Palsy
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- Category: Vol. 85, March 2017
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Reliability of Migration Index in Subluxated Femoral Head in Spastic Cerebral Palsy, ASSEM BASTAWISY, EBEED YASIN, HOSSAM EL-DIN AMIN, EL-SYAYED MAHGOUB and AHMED TAMER
Abstract
Background: Cerebral palsy is a disabling disease, there is several radiological methods described to evaluate hip subluxation in cp patients. Migration index is the most fre-quently used method to detect risk of hip dislocation in cp patients.
Objective: Assessing the reliability of migration percentage to detect risk of hip displacement and dislocation in patients with spastic cerebral palsy.
Patients and Methods: The study included 40 hips in 26 patients, 30 hip joints were subluxated and 10 hip joints were normal without subluxation. Conventional anteroposterior radiographs of the pelvis were taken with the child in the supine position with standardized methods. All subjects were subjected to radiological assessment of their migration index, by two raters, group A and group B. Each rater evaluated the migration percentage 3 times by an interval of one week, in order to evaluate the intra-rater difference and inter-rater difference. Intraclass correlation (ICC) was used to test the inter- and intra-rater reliability.
Results: Migration percentage shows excellent, intra-rater, and inter-rater reliability.
Conclusion: Using the lateral edge of the acetabulum to evaluate the migration percentage shows high reliability.