title: Surgical treatment and clinical implication for posterolateral rotatory instability of the elbow: Osborne-Cotterill lesion of the elbow.
abstract: BACKGROUND
  An osteochondral fracture in the posterolateral margin of the capitellum is recognized as being a cause of posterolateral rotatory instability (PLRI).
  
  
  METHODS
  Five patients who presented with chronic PLRI of the elbow were associated with an osteochondral fracture in the posterolateral margin of the capitellum (Osborne-Cotterill lesion). All presented instability and deficient radiocapitellar articulation at extension. Ligament reconstruction was performed in the first three cases, and combined ligament and osseous reconstruction was performed in the other two cases.
  
  
  RESULTS
  Simple excision and ligament reconstruction resulted in one failure out of three, and combined ligament and osseous reconstruction resulted in no failure out of two.
  
  
  CONCLUSIONS
  Osteochondral defect in the posterolateral aspect of the capitellum is an important indicator of PLRI; however, the result of this study suggests ligament reconstruction for those with a large bone defect may not be always successful.
authors.affiliation: Department of Orthopedic Surgery, Asan Medical Center, Ulsan Medical School, Seoul, Korea. jeonchoi@chol.com
authors.forename: In-Ho
authors.initials: IH
authors.lastname: Jeon
authors.forename: Woo-Kie
authors.initials: WK
authors.lastname: Min
authors.forename: Ivan D
authors.initials: ID
authors.lastname: Micic
authors.forename: Hwan-Seong
authors.initials: HS
authors.lastname: Cho
authors.forename: Poong-Taek
authors.initials: PT
authors.lastname: Kim
mesh_terms: D000293:Adolescent; D000328:Adult; D002356:Cartilage / Q000293:injuries*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000150:complications* / Q000175:diagnosis / Q000628:therapy; D007593:Joint Instability / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery*; D008297:Male; D016059:Range of Motion, Articular; D020127:Recovery of Function; D016896:Treatment Outcome; D055815:Young Adult; D000092464:Elbow Injuries