Korean J Sports Med.  2017 Jun;35(1):10-14. 10.5763/kjsm.2017.35.1.10.

The Estimation of the Prevalence Rate of Boxer's Knuckle by Internet Questionnaire

Affiliations
  • 1Department of Orthopedic Surgery, Seoul Sacred Heart General Hospital, Seoul, Korea. ggowe@naver.com
  • 2Coxdiet, Seoul, Korea.

Abstract

Boxer's knuckle has become known as rare diseases caused by trauma, congenital, idiopathic, degenerative and more. Because there is no research for specific prevalence rate, the purpose
of this study is to figure out the possibility of the prevalence rate of Korean early 20's who relied on data from the Internet questionnaire about the group suspected of having Boxer's knuckle by self-diagnosis after an indirect explanation for Boxer's knuckle. The positive response rate of Boxer's knuckle analyzed by a public Internet survey questionnaire contains personal information, Boxer's knuckle symptoms, location, risk factors, family history, and so on. Total of 304 respondents include 106 males (median age, 23 years; Q1, 21–Q3, 23), 198 females (median age, 21 years; Q1, 21–Q3, 23). Thirty-three patients had severe symptoms of Boxer's knuckle (dislocation) and 42 patients had mild symptoms of Boxer's knuckle (subluxation). Sex, age, type of exercise and duration of exercise, family history, etc were analyzed. It is a result that whether or not history of severe exercise and family history are statistical significances as risk factors. Fifteen (7.7%) of 196 people who do not exercise, seven (14.0%) of 50 people with light exercise, 11 (19.0%) of 58 people with severe exercise, 28 (9.5%) of 294 people without family history and five (50.0%) of 10 people with family history showed symptoms of the Boxer's knuckle. The positive response rate of the Boxer's knuckle is 10.9%. The exercise in the possibility of injury and family history are significant predictors.

Keyword

Boxer's knuckle; Metacarpophalangeal joint; Extensor tendon dislocation
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