title: Uncommon external abdominal oblique muscle strain in a professional soccer player: a case report.
abstract: BACKGROUND
  This is the first report of external abdominal oblique muscle injury occurring in a professional soccer player.
  
  
  METHODS
  A 28-year-old Caucasian professional soccer player presented after experiencing a popping sensation associated with strong parietal pain localized between the left 11th and 12th ribs. Ultrasound examination revealed a collection of fluid under the 11th rib, suggesting injury of the left external oblique muscle. Platelet-rich plasma treatment was administered and the soccer player returned to competition on the 21st day after treatment.
  
  
  CONCLUSIONS
  This rare injury results from a sudden intrinsic eccentric contraction of the internal oblique muscle while in a stretched position. Ultrasound can help to confirm the diagnosis and to monitor clinical follow-up. Platelet-rich plasma treatment could aid recovery in high-level athletes.
authors.affiliation: CHU Nantes, Service de MPR Locomoteur, Hôpital Saint Jacques, 85 rue Saint Jacques, 44 035 Nantes, Cedex 01, France. marc.dauty@chu-nantes.fr.
authors.forename: Marc
authors.initials: M
authors.lastname: Dauty
authors.forename: Pierre
authors.initials: P
authors.lastname: Menu
authors.forename: Charles
authors.initials: C
authors.lastname: Dubois
mesh_terms: D000009:Abdominal Muscles / Q000000981:diagnostic imaging / Q000293:injuries* / Q000503:physiopathology; D000328:Adult; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D053657:Platelet-Rich Plasma; D020127:Recovery of Function; D012916:Soccer / Q000293:injuries*; D013180:Sprains and Strains / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology / Q000628:therapy; D013997:Time Factors; D016896:Treatment Outcome; D014463:Ultrasonography