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Ischiofemoral space dimensions for ischiofemoral impingement: is it different in children?
Barış Ten1, Orhan Beger2, Yüksel Balcı3
1Department of Radiology, Mersin University Faculty of Medicine, Ciftlikkoy Campus, 33343, Mersin, Turkey. drbaristen@hotmail.com.
Insights
Ischiofemoral space (IFS) dimensions increase with age in children aged 1-18 years. These age-specific values are crucial for diagnosing ischiofemoral impingement in pediatric patients.
Area of Science:
- Pediatric orthopedics
- Radiology
- Anatomy
Background:
- Ischiofemoral impingement (IFI) is a hip condition that can cause pain.
- Understanding normal anatomical variations in children is essential for diagnosis.
- The ischiofemoral space (IFS), femoral neck angle (FNA), and ischial angle (IA) are key measurements.
Purpose of the Study:
- To analyze the age-related changes in ischiofemoral space (IFS) dimensions.
- To establish normative data for IFS, femoral neck angle (FNA), and ischial angle (IA) in children.
- To aid in the diagnosis of ischiofemoral impingement in pediatric populations.
Main Methods:
- Retrospective analysis of computed tomography (CT) images from 180 pediatric subjects (ages 1-18).
- Measurements included ischiofemoral space (IFS), femoral neck angle (FNA), and ischial angle (IA).
- Subjects had no pre-existing hip disorders.
Main Results:
- Mean IFS was 14.64 mm, mean FNA was 34.61°, and mean IA was 131.52°.
- IFS increased with age from 1 to 18 years.
- FNA and IA generally decreased with age, with IA showing an irregular pattern.
Conclusions:
- Ischiofemoral space (IFS) dimensions increase during childhood and adolescence.
- Age-specific reference values for IFS, FNA, and IA are valuable for diagnosing ischiofemoral impingement.
- These findings support the use of normative data in pediatric hip imaging interpretation.
Objective:
This study intended to analyze alterations in ischiofemoral space (IFS) dimensions in normal children between the ages of 1 and 18 years for the ischiofemoral impingement.
Materials And Methods:
This study retrospectively focused on computed tomography images of 360 hips of 180 (90 boys and 90 girls) pediatric subjects (mean age: 9.50 ± 5.20 years, range: 1-18 years) without any hip disorders to measure IFS, femoral neck angle (FNA), and ischial angle (IA).
Results:
Mean IFS, FNA, and IA were measured as 14.64 ± 7.24 mm, 34.61 ± 11.47°, and 131.52 ± 4.22°, respectively. IFS increased in children aged between 1 and 18 years, whereas FNA and IA decreased. IFS was similar in infancy and early childhood periods but then increased up to postpubescent period. FNA decreased proportionally from birth, whereas IA decreased in an irregular pattern. Linear functions were detected as y = 3.451 + 1.178 × years for IFS, as y = 48.555 - 1.468 × years for FNA, and as y = 132.535 - 0.107 × years for IA.
Conclusion:
Our findings indicate that IFS tends to increase in size with age during childhood but decreases with further aging. Therefore, age-specific values for IFS, FNA, and IA may be beneficial for clinicians and radiologists for the diagnosis of ischiofemoral impingement.
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