Mustafa Gok1,2, Ridvan Oner3, Ferit Tufan Ozgezmez3, Elif Aydin4, Ayse Fahriye Tosun5, Emre Cullu3

1Department of Radiology, Adnan Menderes University Faculty of Medicine, Aydın, Türkiye
2Sydney Medical School and School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
3Department of Orthopedics and Traumatology, Adnan Menderes University Faculty of Medicine, Aydın, Türkiye
4Department of Physiotherapy and Rehabilitation, Adnan Menderes University Faculty of Medicine, Aydın, Türkiye
5Department of Pediatric Health and Diseases, Division of Pediatric Neurology, Adnan Menderes University Faculty of Medicine, Aydın, Türkiye

Keywords: Cerebral palsy, hip, reliability, revised Melbourne Cerebral Palsy Hip Classification System.

Abstract

Objectives: The aim of this study was to measure the reliability of the expanded and revised Melbourne Cerebral Palsy Hip Classification System (r-MCPHCS) across different medical specialties.

Patients and methods: Anteroposterior pelvic radiographs of a total of 44 patients (20 males, 24 females; median 16.7 years; range, 12 to 32 years) with cerebral palsy (CP) were analyzed between January 2005 and December 2020. Four medical specialists (an orthopedic surgeon, a pediatric neurologist, a radiologist, and a physical medicine and rehabilitation specialist) were included in the study. The time gap between the first and the second assessment was at least three months. The intra- and inter-observer intraclass correlation coefficient (IntraOb. and InterOb. ICCs) were calculated. An ICC of >0.8 was considered excellent fit.

Results: The median IntraOb. ICC was found to be 0.93 (range, 0.89 to 0.97), the median InterOb. ICC was found to be 0.88 for the first assessment (A) and 0.93 for the second assessment (B). Both results were interpreted as excellent in terms of compatibility.

Conclusion: Our study results suggest that r-MCPHCS is a well-designed, reliable and reproducible scale that is easy to use among different medical specialists.

Citation: Gok M, Oner R, Ozgezmez FT, Aydin E, Tosun AF, Cullu E. Reviewing the reliability of revised Melbourne Cerebral Palsy Hip Classification System across different medical specialties. Jt Dis Relat Surg 2025;36(1):148-154. doi: 10.52312/jdrs.2025.2023.

Author Contributions

Made substantial contributions to conception or design of the work: M.G., R.O., E.C.; Involved in drafting the work, approved the final version to be published; and investigated and resolved the agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriate: M.G., R.O., E.C. All authors participated in collecting the data for the work. All authors participated in revising the manuscript.

Conflict of Interest

The authors declared no conflicts of interest with respect to the authorship and/or publication of this article.

Financial Disclosure

The authors received no financial support for the research and/or authorship of this article.

Data Sharing Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.