title: Functional outcomes after peroneal tendoscopy in the treatment of peroneal tendon disorders.
abstract: OBJECTIVE
  The primary purpose of this study was to evaluate clinical outcomes following peroneal tendoscopy for the treatment of peroneal pathology. Correlation between pre-operative magnetic resonance imaging (MRI) and peroneal tendoscopic diagnostic findings was also assessed.
  
  
  METHODS
  Twenty-three patients with a mean age of 34 ± 8.8 years undergoing peroneal tendoscopy were pre- and post-operatively assessed with the foot and ankle outcome score (FAOS) and the Short Form-12 (SF-12) outcome questionnaires. Follow-up was over 24 months in all patients. The sensitivity and specificity of MRI were calculated in comparison with peroneal tendoscopy, including the positive predictive value (PPV).
  
  
  RESULTS
  Both the FAOS and the SF-12 improved significantly (p < 0.05) at a mean follow-up of 33 ± 7.3 months significantly. MRI showed an overall sensitivity of 0.90 (95% confidence interval (CI) = 0.82-0.95) and specificity of 0.72 (95% CI 0.62-0.80). The PPV for MRI diagnosis of peroneal tendon pathology was 0.76 (95% CI 0.68-0.83).
  
  
  CONCLUSIONS
  The current study found good clinical outcomes in patients with peroneal tendon disorders, treated with peroneal tendoscopy. Although a relatively small number of patients were included, the study suggests good correlation between tendoscopic findings and pre-operative MRI findings of peroneal tendon pathology, supporting the use of MRI as a useful diagnostic modality for suspected peroneal tendon disorders.
  
  
  METHODS
  Level IV, retrospective case series.
authors: Hospital for Special Surgery, New York, NY, USA. KennedyJ@hss.edu.
authors: John G
authors: JG
authors: Kennedy
authors: Hospital for Special Surgery, New York, NY, USA.|Department of Orthopedic Surgery, Academic Medical Center, Amsterdam, The Netherlands.|Academic Center for Evidence Based Sports Medicine (ACES), Amsterdam Collaboration for Health and Safety in Sports (ACHSS), Amsterdam, The Netherlands.
authors: Pim A D
authors: PA
authors: van Dijk
authors: University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
authors: Christopher D
authors: CD
authors: Murawski
authors: East River Medical Imaging, New York, NY, USA.
authors: Gavin
authors: G
authors: Duke
authors: Hospital for Special Surgery, New York, NY, USA.
authors: Hunter
authors: H
authors: Newman
authors: Department of Orthopaedic Surgery, Harvard Medical School, Massachusetts General Hospital, Boston, MA, USA.
authors: Christopher W
authors: CW
authors: DiGiovanni
authors: Hospital for Special Surgery, New York, NY, USA.|Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan.
authors: Youichi
authors: Y
authors: Yasui
mesh_terms: D000328:Adult; D000843:Ankle Joint / Q000000981:diagnostic imaging / Q000601:surgery; D004724:Endoscopy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D013710:Tendons / Q000000981:diagnostic imaging* / Q000601:surgery*
keywords: Ankle; Magnetic resonance imaging; Peroneal tendon; Tendinosis; Tendon injury; Tendoscopy