title: PREVALENCE OF LESIONS ASSOCIATED WITH TRAUMATIC RECURRENT SHOULDER DISLOCATION.
abstract: OBJECTIVE
  To evaluate the prevalence of lesions associated with traumatic anterior shoulder instability and the relationships between the prevalence of these lesions and the number of episodes and time since symptoms started.
  
  
  METHODS
  Fifty-seven patients aged 18 to 40 years, with traumatic anterior shoulder instability, more than one episode of shoulder dislocation and at least six months since the first dislocation, who required surgery to treat the instability, were selected. Arthroscopic inspection was performed on all the patients to assess any associated lesions.
  
  
  RESULTS
  The prevalence of lesions was assessed, and Bankart lesions were the most prevalent, followed by Hill-Sachs lesions, while rotator cuff injuries were the least prevalent. There was no correlation from comparison between the number of episodes of dislocation and the prevalence of associated lesions. On the other hand, in relation to the time since symptoms started, the patients who had had symptoms for longer times had fewer Hill-Sachs lesions.
  
  
  CONCLUSIONS
  It was not possible to affirm that, in patients with chronic shoulder instability, the numbers of associated lesions increased with the time since symptoms started, or with the number of episodes of dislocation.
authors.affiliation: Orthopedist in the Shoulder and Elbow Surgery Sector, Discipline of the Hand and Upper Limb, São Paulo Medical School, Federal University of São Paulo (UNIFESP), São Paulo, Brazil.
authors.forename: Oreste Lemos
authors.initials: OL
authors.lastname: Carrazzone
authors.affiliation: Orthopedist in the Shoulder and Elbow Surgery Sector, Discipline of the Hand and Upper Limb, São Paulo Medical School, Federal University of São Paulo (UNIFESP), São Paulo, Brazil.
authors.forename: Marcel Jun Sugawara
authors.initials: MJ
authors.lastname: Tamaoki
authors.affiliation: Resident Physician in the Department of Orthopedics and Traumatology, São Paulo Medical School, Federal University of São Paulo (UNIFESP), São Paulo, Brazil.
authors.forename: Luiz Felipe Morlin
authors.initials: LF
authors.lastname: Ambra
authors.affiliation: Physician in the Shoulder and Elbow Surgery Sector, Discipline of the Hand and Upper Limb, São Paulo Medical School, Federal University of São Paulo (UNIFESP), São Paulo, Brazil.
authors.forename: Nicola Archetti
authors.initials: NA
authors.lastname: Neto
authors.affiliation: Head of the Shoulder and Elbow Surgery Sector, Discipline of the Hand and Upper Limb, São Paulo Medical School, Federal University of São Paulo (UNIFESP), São Paulo, Brazil.
authors.forename: Marcelo Hide
authors.initials: MH
authors.lastname: Matsumoto
authors.affiliation: Physician in the Department of Orthopedics and Traumatology, São Paulo Medical School, Federal University of São Paulo (UNIFESP), São Paulo, Brazil.
authors.forename: João Carlos
authors.initials: JC
authors.lastname: Belloti
keywords: Arthroscopy; Joint Instability/complications; Shoulder Dislocations/complications