An independent assessment of reliability of the Melbourne Cerebral Palsy Hip Classification System

Journal of Children's Orthopaedics
M W ShraderC Boan

Abstract

Neuromuscular (NM) hip dysplasia is common in patients with cerebral palsy (CP). Traditionally, migration percentage (MP) has been used to measure the severity of NM hip dysplasia; however, the MP has some limitations. The purpose of this study is to determine the intra- and inter-reliability of the Melbourne Cerebral Palsy Hip Classification System in the typical paediatric population of patients with CP. A total of 65 anteroposterior pelvis radiographs in patients (age range 12 years to 21 years) with CP spanning all grades (I to VI) of the classification system were identified and collected for analysis in this institutional review board approved study. Four paediatric orthopaedic surgeons and one orthopaedic surgical resident classified each radiograph according to the Melbourne system. Then, at least four weeks later, the raters repeated the process with a re-randomised order of radiographs. Statistical analysis was performed using the intraclass correlation coefficient (ICC) where < 0 denotes poor agreement and > 0.8 indicates almost perfect agreement. The interobserver reliability was found to be excellent with the ICC of 0.853 (0.813 to 0.887) and 0.839 (0.795 to 0.877). The intraobserver reliability was also found to b...Continue Reading

References

Jan 1, 1995·Developmental Medicine and Child Neurology·M S Cornell
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Dec 23, 2004·Journal of Pediatric Orthopedics·H Kerr Graham
Oct 30, 2007·BMC Musculoskeletal Disorders·Gunnar HägglundPhilippe Wagner
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Mar 1, 2007·Journal of Children's Orthopaedics·Gunnar HägglundMåns Persson
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Mar 2, 2010·The Journal of Bone and Joint Surgery. British Volume·M L MurnaghanH K Graham

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