Evidence map›Paper›PMID 40764829›Full record

ArticleSkeletal radiology2026

Diagnostic values of radiographic indices for predicting periosteal entrapment in pediatric proximal phalangeal base physeal fractures of toes.

Ho Young Park, Jeong-Seok Moon, Kiwook Kim

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Article in Skeletal radiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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3 authors.

Ho Young ParkDepartment of Radiology, Yeson Hospital, Bucheon, Republic of Korea.
Jeong-Seok MoonDepartment of Orthopedic Surgery, Yeson Hospital, Bucheon, Republic of Korea.
Kiwook KimDepartment of Radiology, Yeson Hospital, Bucheon, Republic of Korea. ashurey87@gmail.com.ORCID http://orcid.org/0000-0002-8798-5038

Funding

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6 · The paper itself

Abstract

objectiveIdentifying periosteal entrapment in pediatric physeal fractures is crucial for making treatment decisions. The purpose of this study is to evaluate the diagnostic value of radiographic indices in predicting periosteal entrapment in pediatric proximal phalangeal base physeal fractures of the toes. MATERIALS AND

methodsThis retrospective study included 35 pediatric patients with proximal phalangeal base physeal fractures, 15 of whom exhibited periosteal entrapment confirmed via MRI. Physeal fracture distance, diaphyseal axis-metatarsal head deviation angle, and the presence of a rim fragment sign were assessed on anteroposterior radiographs. Diagnostic performance was evaluated using ROC analysis, and optimal cut-off values were determined using Youden's index. Logistic regression models were developed to examine the added value of combining multiple radiographic indices for predicting periosteal entrapment.

resultsPhyseal fracture distance and diaphyseal axis-metatarsal head deviation angle measured on radiographs showed excellent diagnostic performance, with AUC values of 0.94 and 0.93, respectively. Optimal cut-off values were 1.97 mm for physeal fracture distance (sensitivity 93%, specificity 85%) and 9.5° for diaphyseal axis-metatarsal head deviation angle (sensitivity 80%, specificity 95%). Combined models incorporating the rim fragment sign with either physeal fracture distance or diaphyseal axis-metatarsal head deviation angle yielded higher AUCs of 0.97 and sensitivities of 100%.

conclusionsPhyseal fracture distance and diaphyseal axis-metatarsal head deviation angle are valuable radiologic markers for predicting periosteal entrapment in pediatric proximal phalangeal base fractures of toes. When used in conjunction with these radiologic measurements, the rim fragment sign may further improve diagnostic accuracy.

Indexed as

Fractures, BonePeriosteumRadiographyToe PhalangesAdolescentChildChild, PreschoolFemaleHumansMagnetic Resonance ImagingMaleRetrospective StudiesSensitivity and SpecificityMRIPediatricsPeriosteal entrapmentPhyseal fractureRadiography

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