ncidence (annual) of Ankle sprain: 850,000 annually (NIAMS)

Incidence Rate: approx 1 in 320 or 0.31% or 850,000 people in USA [about data]

Incidence extrapolations for USA for Ankle sprain: 850,000 per year, 70,833 per month, 16,346 per week, 2,328 per day, 97 per hour, 1 per minute, 0 per second. Note: this extrapolation calculation uses the incidence statistic: 850,000 annually (NIAMS)
http://www.wrongdiagnosis.com/a/ankle_sprain/stats.htm

Prevalance of Ankle sprain: Approximately 1 million ankle injuries occur each year, and 85 percent of them are sprains. (Source: excerpt from Questions and Answers Sprains and Strains: NIAMS)