A sad bunion is a complex foot deformity that typically develops in three ways:
Leaning: Abnormal foot structure and poor foot mechanics overload your first metatarsal bone. This overload stretches and weakens your ligaments and the layers covering your joint to cause the first metatarsal bone to lean sideways.
Elevation: The sideways lean causes the bunion bump to grow prominent.
Rotation: As your bunion progresses, you also have abnormal tendon strain that pushes your big toe farther out of position.
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