title: Joint awareness after ACL reconstruction: patient-reported outcomes measured with the Forgotten Joint Score-12.
abstract: OBJECTIVE
  To measure joint awareness in patients who have undergone anterior cruciate ligament (ACL) reconstruction and to investigate medium- and long-term results of the procedure.
  
  
  METHODS
  All patients who had undergone ACL reconstruction with the same arthroscopic surgical technique at our institution between 2011 and 2014 (medium-term follow-up group (Group I)) or between 2000 and 2005 (long-term follow-up group (Group II)) were considered for inclusion in the study. A group of healthy controls were recruited to obtain reference values for the FJS-12 (Forgotten Joint Score-12). Propensity score matching was applied to improve comparability of patients and healthy controls in terms of sex and age.
  
  
  RESULTS
  Fifty-eight patients of the Group I (mean follow-up 31.5 (SD13.4) months, range 12-54), 57 patients of the Group II (mean follow-up 139 (SD15.2) months, range 120-179), and the healthy control samples (100 individuals) were analysed. Significantly lower FJS-12 was found in both groups (Group I: 71.6 and Group II: 70.1), compared to the two matched control groups (88.1 and 90.0).
  
  
  CONCLUSIONS
  The concept of joint awareness was successfully applied to evaluate medium- and long-term results of ACL reconstruction. The clinical relevance of this study is that it extends the construct of joint awareness as a patient-reported outcome parameter to ACL reconstruction surgery.
  
  
  METHODS
  Level III.
authors.affiliation: Department of Orthopaedic Surgery and Traumatology, Kantonsspital St. Gallen, 9007, St. Gallen, Switzerland. henrik.behrend@kssg.ch.
authors.forename: Henrik
authors.initials: H
authors.lastname: Behrend
authors.affiliation: Department of Orthopaedic Surgery and Traumatology, Kantonsspital St. Gallen, 9007, St. Gallen, Switzerland.
authors.forename: Vilijam
authors.initials: V
authors.lastname: Zdravkovic
authors.affiliation: Department of Psychiatry and Psychotherapy, Innsbruck Medical University, 6020, Innsbruck, Austria.
authors.forename: Johannes M
authors.initials: JM
authors.lastname: Giesinger
authors.affiliation: Department of Orthopaedic Surgery and Traumatology, Kantonsspital St. Gallen, 9007, St. Gallen, Switzerland.
authors.forename: Karlmeinrad
authors.initials: K
authors.lastname: Giesinger
mesh_terms: D000293:Adolescent; D000328:Adult; D016118:Anterior Cruciate Ligament / Q000601:surgery; D000070598:Anterior Cruciate Ligament Injuries / Q000523:psychology* / Q000534:rehabilitation / Q000601:surgery*; D059549:Anterior Cruciate Ligament Reconstruction / Q000523:psychology* / Q000534:rehabilitation*; D001182:Arthroscopy; D001364:Awareness; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000601:surgery; D008297:Male; D008875:Middle Aged; D000071066:Patient Reported Outcome Measures; D010465:Perception; D016896:Treatment Outcome; D055815:Young Adult
keywords: ACL reconstruction; Forgotten Joint Score-12 (FJS-12); Joint awareness; Patient-reported outcomes (PROs)