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[Measurement of femoral anteversion in children by ultrasonics]
Insights
This study introduces an ultrasound method for measuring femoral anteversion, a hip rotation angle. This non-invasive technique provides results comparable to CT scans, even in infants.
Area of Science:
- Orthopedics
- Pediatric imaging
- Biomechanical analysis
Context:
- Femoral anteversion is a critical parameter in pediatric orthopedics, influencing lower limb biomechanics.
- Accurate measurement of femoral anteversion is essential for diagnosing and managing torsion anomalies.
- Existing methods like CT scans can involve radiation exposure and may be challenging in infants.
Purpose:
- To describe a novel, non-invasive ultrasound method for measuring femoral anteversion.
- To validate the accuracy of the ultrasound technique against CT scans.
- To assess the feasibility of using ultrasound for femoral anteversion measurement in infants and children.
Summary:
- A new ultrasound technique utilizing a spirit level on a bar probe was developed to measure femoral anteversion.
- The method incorporates controlled rotation of the lower limbs to ensure measurement validity, particularly in infants.
- Preliminary results from 10 pediatric patients (20 hips) aged 2-16 years with torsion anomalies showed excellent agreement with CT scan measurements.
Impact:
- This ultrasound method offers a radiation-free, accessible alternative for assessing femoral anteversion in pediatric populations.
- It has the potential to improve the diagnosis and management of lower limb torsion anomalies.
- The technique's applicability in infants broadens the scope of non-invasive orthopedic assessments.
Abstract:
After reviewing the anatomy of the frontal geometry of femur and values for femoral anteversion during growth, an ultrasound method is described for measurement of femoral anteversion. The principle underlying the technique is the use of a spirit level fixed to a bar probe and an effective contention in rotation of lower limbs, this ensuring validity of results even in infants. Analysis of findings in a preliminary series of 10 infants (20 hips), age range 2 to 16 years, with torsion anomalies of lower limbs, showed values obtained to be totally superimposable on those provided by a CT scan.