title: [Comparative study after hamstring ACL plasty with RigidFix (pin fixation) and EndoButton (anchor fixation)].
abstract: OBJECTIVE
  Within a prospective case group study, two hamstring fixation techniques, a pin fixation with RigidFix (RF) and an anchor fixation with EndoButton (EB), were compared.
  
  
  METHODS
  67 patients were followed clinically and by MRI preoperatively (t0), at six months (t6) and at twelve months (t12). In one group (N = 21), EB was used for representing a juxta-articular graft fixation. The second group (N = 46) with RF was used to represent the ab-articular fixation. KT-1000 stability measurement, IKDC, Lysholm and Tegner scores were used to determine the clinical outcomes. Reflux and tunnel widening (TW) were investigated by MRI.
  
  
  RESULTS
  The KT-1000 values were slightly more stable at t6 (EB: 2.1 +/- 4.1 mm, RF: 1.0 +/- 2.5 mm) in the RF group (p = 0.044) but equalised later at t12 (EB: 0.5 +/- 3.1 mm, RF 1.0 +/- 2.4 mm). The median Tegner score at t6 (EB: 4.3 +/- 1.2, RF 4.1 +/- 1.7) and t12 (EB: 5.9 +/- 1.8, RF 5.4 +/- 2.0) were comparable (p = 0.692). The mean Lysholm score at t6 (EB: 90 +/- 11, RF: 91 +/- 8.9) and t12 (EB: 95 +/- 7.5, RF: 95 +/- 7.4) was comparable in each group (p = 0.589). The same was valid in the median of the IKDC score at t6 (EB: II, RF III) and t12 (EB: II, RF III). The category "femoral reflux" showed slight minimal fringe in the EB group at t6 but aligned to "no reflux" together with the RF group at t12 (NS, p = 0.550). A tunnel widening was not detectable in either of the groups.
authors.affiliation: Klinik und Poliklinik für Orthopädie und Orthopädische Chirurgie, Universitätsklinikum Giessen und Marburg, Standort Giessen. erhan.basad@ortho.med.unigiessen.de
authors.forename: E
authors.initials: E
authors.lastname: Basad
authors.forename: A
authors.initials: A
authors.lastname: Kipper
authors.forename: O A
authors.initials: OA
authors.lastname: Wüsten
authors.forename: H
authors.initials: H
authors.lastname: Stürz
authors.forename: B A
authors.initials: BA
authors.lastname: Ishaque
mesh_terms: D000293:Adolescent; D000328:Adult; D016118:Anterior Cruciate Ligament / Q000601:surgery*; D000070598:Anterior Cruciate Ligament Injuries; D001858:Bone Nails; D006801:Humans; D007718:Knee Injuries / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D053441:Suture Anchors; D016896:Treatment Outcome; D055815:Young Adult