title: Reconstruction of the medial patellofemoral ligament: Evaluation of the clinical results of autografts versus allografts.
abstract: OBJECTIVE
  The purpose of the study was to evaluate the functional results after medial patellofemoral ligament (MPFL) reconstruction in patients using auto- and allograft.
  
  
  METHODS
  A retrospective study was conducted on 28 patients with recurrent patellar dislocation, with 13 patients (13 knees) undergoing MPFL reconstruction with hamstring autograft, and 15 patients (16 knees) with reconstruction surgery with allograft. The total group included 13 males and 15 females, with an age range of 15 to 38 years. The graft-related morbidity was studied and a clinical assessment was performed using the pre- and postoperative Kujala score. Associated complications were reported for each group. All the patients had more than 12 months of follow up.
  
  
  RESULTS
  No recurrent dislocations or graft related complications were reported in either group. The post-operative Kujala subjective knee score was 89.2 in the autograft group, and 92.6 in the allograft group (p >.05). One patient in the allograft group received a revision surgery due to poor positioning of anchors. Another patient in the allograft group had non-displaced patella fracture related to the bone tunnels and another patient had flexion deficit and needed mobilization under anesthesia.
  
  
  CONCLUSIONS
  There were no significant differences between both groups, and the results were comparable.
authors.affiliation: Departamento de Traumatología, Clínica Alemana de Santiago, Santiago, Chile. Electronic address: rcalvo@alemana.cl.
authors.forename: R
authors.initials: R
authors.lastname: Calvo Rodríguez
authors.affiliation: Departamento de Traumatología, Clínica Alemana de Santiago, Santiago, Chile.
authors.forename: D
authors.initials: D
authors.lastname: Figueroa Poblete
authors.affiliation: Departamento de Traumatología, Clínica Alemana de Santiago, Santiago, Chile.
authors.forename: Z
authors.initials: Z
authors.lastname: Anastasiadis Le Roy
authors.affiliation: Departamento de Traumatología, Clínica Alemana de Santiago, Santiago, Chile.
authors.forename: F
authors.initials: F
authors.lastname: Etchegaray Bascur
authors.affiliation: Departamento de Traumatología, Clínica Alemana de Santiago, Santiago, Chile.
authors.forename: A
authors.initials: A
authors.lastname: Vaisman Burucker
authors.affiliation: Facultad de Medicina, Universidad del Desarrollo, Santiago, Chile.
authors.forename: R
authors.initials: R
authors.lastname: Calvo Mena
mesh_terms: D000293:Adolescent; D000328:Adult; D064591:Allografts / Q000637:transplantation*; D064592:Autografts / Q000637:transplantation*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008023:Ligaments, Articular / Q000601:surgery*; D008297:Male; D031222:Patellar Dislocation / Q000601:surgery*; D057071:Patellofemoral Joint / Q000601:surgery*; D019651:Plastic Surgery Procedures / Q000379:methods*; D012189:Retrospective Studies; D013710:Tendons / Q000637:transplantation*; D014182:Transplantation, Autologous; D014184:Transplantation, Homologous; D016896:Treatment Outcome; D055815:Young Adult
keywords: Allograft; Aloinjerto; Ligamento femoropatelar medial; Luxación femoropatelar; Medial patellofemoral ligament; Patela; Patella; Patellar dislocation