Csontkor – a csontrendszeri érettség mérésének lehetősége EOS készülékkel

Abstract

Introduction: Hand and wrist bone age assessment methods cannot be performed when using the recommended patient position within the EOS scanner. Aim: We aimed to assess alternative methods for use with the EOS. Method: After investigating 9 alternatives, five methods were selected – cervical vertebra (Hassel–Farman), iliac crest (Risser ‘plus’), hip (Oxford), knee (O’Connor), calcaneus (Nicholson) – and applied to EOS scans of 114, 2–21-year-old normal individuals. Intraclass correlation coefficient tests for reliability and Spearman correlation with calendar age were assessed. Results: Intra- and interobserver reliabilities were all excellent, except with the knee method (0.865 – ‘good’). Calcaneal and cervical methods were the fastest to apply (mean 17.5 s, 33.4 s per evaluation), however, calcanei were unassessable in 14% of scans (versus 1% of cervical). All methods correlated significantly with calendar age (r>0.829, p<0.05). Difficulties were principally absent (12%) or obscured (23%) landmarks. Conclusion: Bone age assessment is possible with all 5 methods, however, the Hassel–Farman method proved to be easily useable, fast and reliable. Orv Hetil. 2019; 160(16): 619–628.