title: Eleven year follow-up of patello-femoral pain syndrome.
abstract: OBJECTIVE
  To evaluate the long-term results in patients with patello-femoral pain syndrome after expectant management.
  
  
  METHODS
  Retrospective, case-control study.
  
  
  METHODS
  Community study in Sweden from 1981 to 1994.
  
  
  METHODS
  Forty-eight patients with patello-femoral pain syndrome were followed for a mean period of 11 years.
  
  
  METHODS
  Patello-femoral joint evaluation scale (0-100 points) was used to evaluate the functional results. Arthroscopy for evaluation of cartilage damage according to Outerbridge, and clinical assessment of knee stability and, range of motion and Q-angle.
  
  
  RESULTS
  The functional results were excellent or good in 41 of 48 (85%) and poor in seven (15%). There was no correlation between the degree of cartilage damage and the level of knee function. Retropatellar cartilage damage was found in 28 patients during arthroscopy. There was no correlation between the degree of cartilage damage and the level of knee function. No patient has Outerbridge frade IV cartilage damage. The Q-angle was 2-23 degrees. There was no significant difference in Q-angle between patients with excellent/good results compared to those with poor.
  
  
  CONCLUSIONS
  Patients with patello-femoral pain syndrome should be managed nonsurgically as the natural course is benign in most cases. Surgical intervention should be used only if correction of anatomical malalignment is necessary and if the surgical methods have proven successful in well-controlled studies with a long follow-up period.
authors.affiliation: Department of Orthopaedics, East Hospital, Göteborg, Sweden.
authors.forename: J
authors.initials: J
authors.lastname: Karlsson
authors.forename: R
authors.initials: R
authors.lastname: Thomeé
authors.forename: L
authors.initials: L
authors.lastname: Swärd
mesh_terms: D000293:Adolescent; D000328:Adult; D001182:Arthroscopy; D002357:Cartilage Diseases / Q000175:diagnosis / Q000209:etiology / Q000628:therapy*; D005260:Female; D005269:Femur; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D010146:Pain / Q000175:diagnosis / Q000209:etiology; D059408:Pain Management; D010329:Patella; D012189:Retrospective Studies; D013577:Syndrome; D016896:Treatment Outcome