| Objective: To describe two asymptomatic subjects with severe, quantified anatomic leg length asymmetry, and visualize how that asymmetry affects unloaded, prone and supine, leg checks.
Clinical features: Two male subjects: one young (14) with leg length inequality of 29 mm, the other older (40) with leg length inequality of 48 mm.
Intervention and outcome: Photographs were taken of the subjects in a variety of positions, demonstrating their pelvic obliquity and how that affected inequality in the prone and supine leg checks.
Conclusions: A large magnitude anatomic leg length inequality (LLI) did not have a significant effect on visual asymmetry in prone and supine leg checks. By logical extension, smaller magnitudes of anatomic leg length inequality may not affect unloaded leg check tests. This hypothesis requires further testing.
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