International Orthopaedics

, Volume 42, Issue 6, pp 1259–1264 | Cite as

Long-term results of custom cementless-stem total hip arthroplasty performed in hip fusion

  • Xavier Flecher
  • Matthieu Ollivier
  • Pascal Maman
  • Sébastien Pesenti
  • Sébastien Parratte
  • Jean-Noël Argenson
Original Paper



Due to complex anatomical considerations, results of cementless-stem total hip arthroplasty (THA) in hip fusion remain controversial compared with conventional THA. We therefore aimed to analyse 3D anatomy of the fused hip based on pre-operative computed tomography (CT) scans, functional outcomes based on the Harris Hip Score (HHS) and the Hip Disability and Osteoarthritis Outcome Score (HOOS), modifications of hip anatomy based on post-operative standardised radiography, and determine complication rate and long-term survival based on Kaplan–Meier analysis.


We retrospectively studied 23 hips that underwent conversion of a fused hip to THA using a 3D CT scan-based custom titanium (Ti alloy hypoxyapetite (HA)-coated stem. The mean follow-up was 15 (9–22) years. Femur anteversion ranged from −29° to 80°.


HHS improved from 59 to 89 points and average range of motion (ROM) was 88° for flexion. Back pain decreased in 62%, and knee pain decreased in 42%. The mean post-operative leg-length discrepancy was 7.8 mm. No intra-operative complications occurred. One aseptic stem loosening for mechanical failure was observed. The Kaplan–Meier survivorship considering revision for any reasons as the end point was 95.6% [95% confidence interval (CI) 92.4–98.8] at 15 years.


Custom cementless stems may be an interesting solution to address the particular anatomical features of hip fusion at the time of THA, with an excellent survival rate at 15 years.


Hip fusion Hip arthrodesis Total hip arthroplasty Anatomy Custom 


Compliance with ethical standards

Conflict of interest

Jean-Noel Argenson is educational consultant for Symbios.

All of the other authors have nothing to disclose regarding the present manuscript.


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Copyright information

© SICOT aisbl 2018

Authors and Affiliations

  • Xavier Flecher
    • 1
    • 2
  • Matthieu Ollivier
    • 1
    • 2
    • 3
  • Pascal Maman
    • 1
    • 2
  • Sébastien Pesenti
    • 1
    • 2
  • Sébastien Parratte
    • 1
    • 2
  • Jean-Noël Argenson
    • 1
    • 2
  1. 1.Department of Orthopaedic SurgeryAPHM, Institute for Locomotion, Sainte-Marguerite HospitalMarseilleFrance
  2. 2.Aix Marseille Univ, APHM, CNRS, ISM, Sainte-Marguerite Hospital, Institute for Locomotion, Department of Orthopaedics and Traumatology, MarseilleFrance
  3. 3.Institut du Mouvement et de l’Appareil Locomoteur, CHU Sainte MargueriteMarseilleFrance

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