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Related Experiment Videos

Leg length discrepancy: how much is too much?

R H Gross

    Orthopedics
    |July 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Leg length discrepancies under 2 cm rarely cause problems for patients. Larger discrepancies can lead to issues, but individual assessment is key, as there

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    Area of Science:

    • Orthopedics
    • Biomechanical Engineering
    • Patient-Reported Outcomes

    Background:

    • Leg length discrepancy (LLD) is a common orthopedic condition.
    • The impact of LLD on patient function and the indications for surgical equalization remain debated.
    • Existing literature shows varied opinions among specialists regarding LLD management.

    Purpose of the Study:

    • To investigate patient-reported problems associated with varying degrees of leg length discrepancy.
    • To explore pediatric orthopedists' perspectives on indications for LLD equalization.
    • To determine if a critical threshold for functional disability due to LLD exists.

    Main Methods:

    • Survey of 74 skeletally mature patients with LLD of 1.5 cm or more.
    • Survey of pediatric orthopedists regarding LLD management.

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  • Analysis of patient-reported issues correlated with LLD magnitude.

    • Main Results:

    • Patients with LLD < 2.0 cm reported no problems.
    • Increasing LLD correlated with more reported problems, but no critical cutoff was identified.
    • Some patients with LLD > 2.5 cm maintained good athletic function.

    Conclusions:

    • Little evidence supports equalization for LLD < 2 cm.
    • Management of larger LLD requires individualized clinical judgment due to patient variability.
    • Precise classification of functional disability based solely on LLD magnitude is confounded by individual differences.