title: Gait six month and one-year after computer assisted Femur First THR vs. conventional THR. Results of a patient- and observer- blinded randomized controlled trial.
abstract: A prospective randomized controlled trial is presented that is used to compare gait performance between the computer assisted Femur First (CAS FF) operation method and conventional THR (CON). 60 patients underwent a 3D gait analysis of the lower extremity at pre-operative, 6 months post-operative and twelve months post-operative. Detailed verification experiments were facilitated to ensure the quality of data as well as to avoid over-interpreting of the data. The results confirm a similar data-quality as reported in the literature. Walking speed, range of motion and symmetry thereof improved over the follow-up period, without significant differences between the groups. While all parameters do significantly increase over the follow-up period for both groups, there were no significant differences between them at any given time-point. Patients undergoing CAS FF showed a trend to improved hip flexion angle indicating a possible long-term benefit.
authors: Ostbayerische Technische Hochschule Regensburg, Faculty of Mechanical Engineering, Laboratory for Biomechanics, Regensburg, Germany; Regensburg University Medical Center (UKR), Department of Orthopaedic Surgery, Regensburg, Germany. Electronic address: tim.weber@oth-regensburg.de.
authors: Tim
authors: T
authors: Weber
authors: Ostbayerische Technische Hochschule Regensburg, Faculty of Mechanical Engineering, Laboratory for Biomechanics, Regensburg, Germany. Electronic address: sebastian.dendorfer@oth-regensburg.de.
authors: Sebastian
authors: S
authors: Dendorfer
authors: University of Groningen, University Medical Center Groningen (UMCG), Department of Orthopaedic Surgery, Groningen, The Netherlands. Electronic address: s.k.bulstra@umcg.nl.
authors: Sjoerd K
authors: SK
authors: Bulstra
authors: Regensburg University Medical Center (UKR), Department of Orthopaedic Surgery, Regensburg, Germany. Electronic address: Joachim.Grifka@klinik.uni-regensburg.de.
authors: Joachim
authors: J
authors: Grifka
authors: University of Groningen, University Medical Center Groningen (UMCG), Department of Rehabilitation Medicine, Groningen, The Netherlands; University of Twente, Department of Biomechanical Engineering, Enschede, The Netherlands. Electronic address: g.j.verkerke@umcg.nl.
authors: Gijsbertus J
authors: GJ
authors: Verkerke
authors: Regensburg University Medical Center (UKR), Department of Orthopaedic Surgery, Regensburg, Germany. Electronic address: tobias.renkawitz@web.de.
authors: Tobias
authors: T
authors: Renkawitz
mesh_terms: D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D004311:Double-Blind Method; D005260:Female; D005269:Femur / Q000601:surgery*; D005500:Follow-Up Studies; D005684:Gait / Q000502:physiology*; D006801:Humans; D035002:Lower Extremity / Q000502:physiology; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D016059:Range of Motion, Articular; D025321:Surgery, Computer-Assisted; D000072797:Walking Speed / Q000502:physiology
keywords: Biomechanics; Combined anteversion; Computer-assisted surgery; Femur first; Gait analysis; THA