Development and evaluation of a new semi-quantitative and morphometric scoring system for magnetic resonance imaging in adolescents with Osgood Schlatter Disease (The OSIS Score)

Lilli Sørensen; Matthew Hever; P. Wielopolski; S. Peter Magnusson; Benjamin Dean; Sinéad Holden; Michael Skovdal Rathleff; Jes Olesen; Edwin H. G. Oei

doi:10.1016/j.ejrad.2025.111934

January 19, 2025European Journal of RadiologyOpen Access

Development and evaluation of a new semi-quantitative and morphometric scoring system for magnetic resonance imaging in adolescents with Osgood Schlatter Disease (The OSIS Score)

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Key Points

To develop and evaluate the intra- and inter-rater reliability of a semi-quantitative and morphometric MRI scoring system for adolescents with Osgood Schlatter Disease.
An expert-led process informed by a systematic review was used to establish an 18-item scoring tool evaluating soft tissues, cartilage, bone, and morphometric parameters.
A trained radiologist and a research trainee independently scored 1.5 T MRI scans of the symptomatic knee twice in 10 adolescents with Osgood Schlatter Disease (mean age 13.2 ± 1.1 years, 30% female).
Most scoring items demonstrated good to very good reliability, with Cohen's κ and intraclass correlation coefficients (ICC) exceeding 0.6.
Patellar height and patellar tendon width achieved the highest consistency, showing intra-rater ICCs of 0.75 to 0.98 and inter-rater ICCs of 0.48 to 0.93.
Lower reliability was noted for patella morphology ratio (inter-rater ICC: -0.16, p = 0.67), superficial bursa homogeneity (intra-rater κ = 0.51), and signal degree across the patellar tendon (κ = 0.55), tibial epiphysis (κ = 0.53), and tibial tuberosity (κ = 0.52).

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Implication

Reliability study reveals good reproducibility for a novel MRI scoring tool in adolescents with Osgood Schlatter disease, indicating its utility for standardized knee joint assessment.

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Sørensen et al. (2025) studied this question.

synapsesocial.com/papers/6a991c227384e28de71ff650 https://doi.org/10.1016/j.ejrad.2025.111934

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Development and evaluation of a new semi-quantitative and morphometric scoring system for magnetic resonance imaging in adolescents with Osgood Schlatter Disease (The OSIS Score)

Key Points

No abstract yet

Implication

Discussion

Cite This Study

Development and evaluation of a new semi-quantitative and morphometric scoring system for magnetic resonance imaging in adolescents with Osgood Schlatter Disease (The OSIS Score)

Key Points

No abstract yet

Implication

Discussion

Cite This Study

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