Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Leg-length discrepancy measured by ultrasonography.

T Terjesen1, P Benum, I Rossvoll

  • 1Department of Orthopedics, Trondheim University Hospital, Norway.

Acta Orthopaedica Scandinavica
|April 1, 1991
PubMed
Summary

Real-time ultrasonography (ultrasound) reliably measures leg-length discrepancy, offering a radiation-free alternative to radiography for clinical screening. While slightly less accurate than X-rays, ultrasound provides a safe method for assessing limb length differences.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

High risk of positive Trendelenburg test after using the direct lateral approach to the hip compared with the anterolateral approach: a single-centre, randomized trial in patients with femoral neck fracture.

The bone & joint journal·2019
Same author

Special symposium issue: Developmental dysplasia and dislocation of the hip.

Journal of children's orthopaedics·2018
Same author

Residual hip dysplasia: is there a place for hip shelf operation?

Journal of children's orthopaedics·2018
Same author

Long-term outcome of closed reduction in late-detected hip dislocation: 60 patients aged six to 36 months at diagnosis followed to a mean age of 58 years.

Journal of children's orthopaedics·2018
Same author

Biomarkers of muscle damage increased in anterolateral compared to direct lateral approach to the hip in hemiarthroplasty: no correlation with clinical outcome : Short-term analysis of secondary outcomes from a randomized clinical trial in patients with a displaced femoral neck fracture.

Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·2018
Same author

The gluteal muscles in end-stage osteoarthritis of the hip: intra- and interobserver reliability and agreement of MRI assessments of muscle atrophy and fatty degeneration.

Clinical radiology·2018

Area of Science:

  • Orthopedics
  • Radiology
  • Medical Imaging

Background:

  • Leg-length discrepancy (LLD) is a common orthopedic condition requiring accurate measurement.
  • Radiographic methods are standard but involve radiation exposure.
  • Development of non-ionizing imaging techniques for LLD assessment is beneficial.

Purpose of the Study:

  • To evaluate the reliability and accuracy of real-time ultrasonography (ultrasound) for measuring leg-length discrepancy.
  • To compare ultrasound measurements with traditional erect-posture radiography.
  • To assess the potential of ultrasound as a clinical screening tool for LLD.

Main Methods:

  • Real-time ultrasonography was used to measure leg length in 45 patients.
  • A custom device was developed for consistent ultrasound transducer positioning.

Related Experiment Videos

  • Leg length was defined as the highest level of the femoral head in the standing position.
  • Measurements were compared to those obtained via erect-posture radiography.

    • Main Results:

    • A high correlation coefficient (r=0.94) was found between ultrasound and radiography.
    • The mean difference in measurements was -1.9 mm, with limits of agreement from -9.1 mm to 5.3 mm.
    • Inter-examiner reliability showed a mean difference of 1.7 mm (95% CI +/- 7 mm).

    Conclusions:

    • Ultrasonography provides a reliable method for determining leg-length discrepancy.
    • While accuracy is slightly lower than radiography, ultrasound's lack of radiation hazards makes it suitable for clinical screening.
    • This ultrasound technique offers a safe, radiation-free alternative for assessing LLD.