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Saber shins in late or tertiary yaws infection

Photographed from the patient’s left side, this image depicts the lower extremities of an individual with papulosquamous lesions of the left ankle and deformities to the leg bones (saber tibia or saber shin) due to yaws infection (frambesia tropica) caused by the spirochete Treponema pallidum subspecies pertenue. (Source: Photography by Dr. JG Caldwell, Centers for Disease Control and Prevention, 1970. Public Health Image Library ID# 16904, Centers for Disease Control and Prevention, Atlanta, Georgia. Public domain.)

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