title: Avulsion fracture of the lesser trochanter in a skeletally immature freestyle footballer.
abstract: We report the case of a skeletally immature freestyle footballer who presented with avulsion fracture of the lesser trochanter. The patient had precursor symptom before onset during a ball juggling. Nonoperative treatment demonstrated good clinical course. This new sporting activity involves kicking the ball continuously, typically with both the hip and the knee in flexion. This repetitive movement might cause continuous stretching stress of the iliopsoas muscle at the apophysis of the lesser trochanter, causing disruption at this site. This new sporting activity in this age cohort may have higher prevalence of this type of injury due to its unique repetitive hip flexion movement.
authors: Department of Orthopaedic Surgery, Juntendo University, Tokyo, Japan.
authors: Yasuhiro
authors: Y
authors: Homma
authors: Tomonori
authors: T
authors: Baba
authors: Seiya
authors: S
authors: Ishii
authors: Mikio
authors: M
authors: Matsumoto
authors: Kazuo
authors: K
authors: Kaneko
mesh_terms: D000293:Adolescent; D000365:Age Determination by Skeleton; D001265:Athletic Injuries / Q000150:complications* / Q000000981:diagnostic imaging*; D006620:Hip Fractures / Q000000981:diagnostic imaging* / Q000209:etiology*; D006801:Humans; D008297:Male; D012916:Soccer