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Tibial tubercle avulsion fracture according to different mechanisms of injury in adolescents: Tibial tubercle avulsion fracture

 Yong-Woon Shin  ;  Dae-Wook Kim  ;  Kun-Bo Park 
 Medicine, Vol.98(32) : e16700, 2019 
Journal Title
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Adolescent ; Athletic Injuries/classification ; Body Mass Index* ; Child ; Female ; Fracture Fixation, Internal ; Fractures, Avulsion/classification* ; Fractures, Avulsion/diagnostic imaging ; Fractures, Avulsion/surgery ; Humans ; Male ; Radiography ; Retrospective Studies ; Risk Factors ; Tibial Fractures/classification* ; Tibial Fractures/diagnostic imaging ; Tibial Fractures/surgery
Tibial tubercle avulsion fracture caused by knee extensor is very rare; furthermore, non-traumatic fractures during running or bilateral fractures have been reported. The purpose of this study was to evaluate any differences according to the mechanisms of injury in adolescents with tibial tubercle avulsion fracture.Thirty patients with tibial tubercle avulsion fractures were reviewed and the average age was 13 years 1 month. Seven patients (low-stress group) had a spontaneous fracture during running without definite trauma. Twenty-three patients (high-stress group) experienced pain during jumping and landing, or definite trauma. The mechanisms of injury, age, height, weight, body mass index (BMI), BMI percentile, fracture type, as well as any complication, such as limitation of motion and deformity related to the physeal arrest, were compared between groups.There was no definite difference in age, fracture type, and surgical outcomes between groups. There was no patient with significant early physeal arrest in both groups. The weight (P = .02), BMI (P = .03) and BMI percentile (P = .01) in low-stress group were higher than those in high-stress group. In low-stress group, 6 patients' BMIs were in the 97th percentile, and 1 patient's BMI was in the 5th percentile.Extreme BMI may be a risk factor for tibial tubercle avulsion fractures in adolescents during running without definite trauma. However, there was no difference in the final outcome according to injury mechanisms.
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1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
Yonsei Authors
Park, Kun Bo(박건보) ORCID logo https://orcid.org/0000-0002-8839-4870
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