Related Experiment Video
Updated: Jul 12, 2025
06:58
Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position
Published on: August 17, 2017
10.0K
The Reliability of the Modified Fels Knee Skeletal Maturity System
Ryan J Furdock1, Kristie J Sun2, Bryan Ren3
1Department of Orthopaedics, University Hospitals Cleveland Medical Center.
Journal of Pediatric Orthopedics
|October 30, 2023
Summary
The mobile app for the Modified Fels (mFels) skeletal maturity system is reliable for new users. Proficiency in skeletal age estimation is achieved quickly, even without prior training.
Area of Science:
- Pediatric Orthopaedics
- Radiology
- Skeletal Development
Background:
- The Modified Fels (mFels) knee skeletal maturity system aids in predicting lower extremity length in children.
- It uses chronological age, sex, and 7 radiographic parameters.
- A mobile app was developed to simplify mFels use.
Purpose of the Study:
- To assess the reliability of the mFels system for novice users.
- To evaluate the effectiveness of the mobile application in minimizing the learning curve.
Main Methods:
- Five user groups (surgeons, residents, nurse practitioners, medical students) with no prior mFels experience used the mobile app.
- Each participant evaluated 20 pediatric knee radiographs.
- Results were compared to the app developers' assessments.
Main Results:
- Inter-rater reliability for mFels parameters ranged from 0.73 to 0.91.
- Inter-rater reliability for skeletal age estimates was high at 0.98.
- Proficiency was achieved by the seventh radiograph for all groups.
Conclusions:
- The mFels system is a reliable method for skeletal maturity evaluation.
- The mobile application requires no special instruction for first-time users.
- Users achieve proficiency in skeletal age estimation rapidly.
Related Concept Videos
01:09Changes in the Appendicular Skeleton with Age
2.0K
The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
2.0K
01:20Introduction to the Skeletal System
5.7K
The skeletal system is the central framework of the body, consisting of different connective tissues: bones, cartilage, tendons, and ligaments.
Components of the Skeletal System
Bone, or osseous tissue, is a hard connective tissue that forms an internal support structure for the human body. Bones shield vulnerable organs and soft tissue from external forces. For example, the vertebral bones protect and support the spinal cord.
Cartilage, a semi-rigid connective tissue found in regions such as...
Components of the Skeletal System
Bone, or osseous tissue, is a hard connective tissue that forms an internal support structure for the human body. Bones shield vulnerable organs and soft tissue from external forces. For example, the vertebral bones protect and support the spinal cord.
Cartilage, a semi-rigid connective tissue found in regions such as...
5.7K