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Topic:

​

Issue:

Knee

Category:

Research

Title:

The Reliability of the Modified Fels Knee Skeletal Maturity System

Author:

Furdock, Ryan J. MD; Sun, Kristie J. BA; Ren, Bryan MD; Folkman, Matthew BS; Glotzbecker, Michael P. MD; Son-Hing, Jochen P. MD; Gilmore, Allison MD; Hardesty, Christina K. MD; Mistovich, R. Justin MD; Liu, Raymond W. MD

Journal:

Journal of Pediatric Orthopaedics

Date:

February 2024

Reference:

44(2): p e192-e196, DOI: 10.1097/BPO.0000000000002553

Level Of Evidence:

II

# of Patients:

18

Study Type:

Reliability study

Location:

Not specified

Summary:

This study evaluates the reliability of the Modified Fels knee skeletal maturity system (mFels) and the associated mobile app to assess skeletal maturity, with a focus on new users.

Methods:

20 pediatric knee radiographs were evaluated by new users using the "What’s the Skeletal Maturity?" mobile app. Their results were compared with those of the app developers.

Exclusions:

Not specified

Results:

Inter-rater reliability for mFels parameters ranged from 0.73 to 0.91. Inter-rater reliability for skeletal age estimates was 0.98. Proficiency in skeletal age estimation was achieved by the seventh radiograph evaluated.

Conclusions:

mFels is a reliable method for skeletal maturity evaluation. First-time users of the mobile app, without special training, demonstrated proficiency by the seventh radiograph.

Relevance:

Limitations:

Perspective:

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