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Background: Imaging in children with capitellar osteochondritis dissecans (COCD) is crucial for surgical decision-making but remains challenging. Novel photon-counting computed tomography (PCCT) technology enables superior resolution while reducing radiation dose. This study aims to describe interrater agreement (IRA) for COCD characteristics assessed with PCCT and to make a comparison with conventional CT. Methods: At a tertiary referral hospital, anonymized PCCT and conventional CT scans of COCD lesions were assessed systematically and independently by 2 experienced clinicians and 2 musculoskeletal radiologists, excluding postoperative scans. The intraclass correlation coefficient (ICC) with 95% confidence intervals was used to describe IRA among all raters. Results: = .025, respectively). Conclusion: PCCT assessment of COCD demonstrates at least substantial IRA for loose body count and at least moderate IRA for lesion size and the presence of an empty defect or bony bridge. Moreover, PCCT may enable higher IRA than conventional CT.
Steenbeek et al. (2026) studied this question.