title: A 10 year follow-up study after Roux-Elmslie-Trillat treatment for cases of patellar instability.
abstract: BACKGROUND
  A retrospective study concerning patients presenting with patella instability, treated using a Roux-Elmslie-Trillat reconstruction operation and followed up for 10 years following surgery, is presented.
  
  
  METHODS
  Pre-operative and follow-up radiographic evaluation included the weight-bearing anteroposterior and merchant views. Evaluation was carried out using the Insall-Salvati index, sulcus and congruence angle. The Roux-Elmslie-Trillat reconstruction operation was performed on 18 patients. The clinical evaluation at follow-up was performed using the Knee-Society-Score (KSS) and Tegner-Score.
  
  
  RESULTS
  Subjective results of the operation were classed as excellent or good in 16 of the 18 patients ten years after surgery; persistent instability of the patella was recorded in only one of the 18 patients. The majority of patients returned to the same level of sporting activity after surgery as they had participated in before injury.
  
  
  CONCLUSIONS
  The Roux-Elmslie-Trillat procedure could be recommended in cases presenting with an increased q-angle, trochlea dysplasia or failed soft tissue surgery. In the present study the majority of patients report a return to previous sporting activity ten years after surgery.
authors.affiliation: Department of Orthopaedic Surgery Elisabeth-Klinik Bigge/Olsberg, Heinrich-Sommer-Strasse 4, 59939 Olsberg, Germany. s.endres@elisabeth-klinik.de
authors.forename: Stefan
authors.initials: S
authors.lastname: Endres
authors.forename: Axel
authors.initials: A
authors.lastname: Wilke
mesh_terms: D000293:Adolescent; D000328:Adult; D001863:Bone Screws; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016268:Internal Fixators; D007593:Joint Instability / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery*; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology; D019637:Orthopedic Procedures / Q000295:instrumentation / Q000379:methods*; D010329:Patella / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery*; D057071:Patellofemoral Joint / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery*; D011859:Radiography; D012189:Retrospective Studies; D013177:Sports; D016896:Treatment Outcome; D055815:Young Adult