title: Retained versus resected posterior cruciate ligament in mobile-bearing total knee replacement: a retrospective, clinical and functional assessment.
abstract: OBJECTIVE
  Fully conforming, mobile-bearing total knee replacement (TKR) was initially designed using a posterior cruciate-sacrificing (CS) technique. Rotating-platform TKR that could also be performed retaining the posterior cruciate developed afterwards. The purpose of this study was to compare the clinical and functional outcomes of patients who had either cruciate-retaining (CR) or cruciate-sacrificing (CS) TKR at a minimum follow-up of 2 years with the same prosthetic design.
  
  
  METHODS
  One hundred and two consecutive TKR (88 patients) were performed at the same institution either with CS (56 TKR-49 patients) or with CR (46 TKR-39 patients) technique. Patients were followed at a minimum of 2 years. Patients were evaluated for articular range of motion, complication rate (infection, loosening) and clinical outcome measures included the pain and functional components of the Knee Society Score.
  
  
  RESULTS
  The two groups (CS, CR) were homogeneous. At final follow-up, no significant difference was seen between the two surgical techniques in terms of ROM, pain and functional level, and revision rate.
  
  
  CONCLUSIONS
  This study showed that for this given mobile-bearing, fully conforming prosthetic design, sacrificing or resecting the PCL does not influence the clinical and functional outcomes at a minimum of 2-year follow-up. Surgeons may indifferently choose one of the two options (CS, CR) according to their preferences.
  
  
  METHODS
  Case series, level IV.
authors.affiliation: Department of Orthopaedics, Polytechnic University of Marche, Ancona, Italy, enea.davide@gmail.com.
authors.forename: D
authors.initials: D
authors.lastname: Enea
authors.forename: V
authors.initials: V
authors.lastname: Cigna
authors.forename: C
authors.initials: C
authors.lastname: Sgolacchia
authors.forename: L
authors.initials: L
authors.lastname: Tozzi
authors.forename: A
authors.initials: A
authors.lastname: Verdenelli
authors.forename: A
authors.initials: A
authors.lastname: Gigante
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D059351:Organ Sparing Treatments / Q000379:methods*; D016119:Posterior Cruciate Ligament / Q000601:surgery*; D011474:Prosthesis Design; D016059:Range of Motion, Articular; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome