A lower ratio between index and ring fingers is associated with higher risk of develo

A new study published online in the journal Rheumatology has found that the lower the ratio between a person's index finger (2D) and their ring finger (4D), the higher their risk of developing severe osteoarthritis in their knees, requiring a total knee replacement. Osteoarthritis (OA) is a major public health problem linked with significant disability in knees and hips.

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