Retrospective Study
Copyright ©The Author(s) 2015. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Orthop. Nov 18, 2015; 6(10): 829-837
Published online Nov 18, 2015. doi: 10.5312/wjo.v6.i10.829
Modified porous tantalum rod technique for the treatment of femoral head osteonecrosis
Emilios E Pakos, Panayiotis Megas, Nikolaos K Paschos, Spyridon A Syggelos, Antonios Kouzelis, Georgios Georgiadis, Theodoros A Xenakis
Emilios E Pakos, Nikolaos K Paschos, Georgios Georgiadis, Theodoros A Xenakis, Department of Orthopaedics and Biomechanics, University of Ioannina, Medical School, 45110 Ioannina, Greece
Panayiotis Megas, Antonios Kouzelis, Department of Orthopaedic Surgery, University Hospital of Patras, University of Patras, Medical School, 26504 Patras, Greece
Spyridon A Syggelos, Department of Anatomy, Histology, Embryology, University of Patras, Medical School, 26504 Patras, Greece
Author contributions: Pakos EE designed the research, performed the research, analysed the data and wrote the paper; Megas P performed the operations, designed and performed the research; Paschos NK wrote the paper and performed the language editing; Syggelos SA and Kouzelis A performed the research and wrote the paper; Georgiadis G wrote the paper; Xenakis TA performed the operations, designed and performed the research.
Institutional review board statement: This study was reviewed and approved by the Ethics Committees of the University Hospital of Ioannina and the University Hospital of Patras.
Informed consent statement: Patients were not required to give informed consent to the study because the analysis used anonymous clinical data that were obtained after each patient agreed to treatment by written consent.
Conflict-of-interest statement: We have no financial relationships to disclose.
Data sharing statement: No additional data are available.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Emilios E Pakos, MD, PhD, Lecturer, Orthopaedic Surgeon, Department of Orthopaedics and Biomechanics, University of Ioannina, Medical School, P.O. Box 1186, 45110 Ioannina, Greece. epakos@yahoo.gr
Telephone: +30-265-1008099 Fax: +30-265-1008069
Received: May 25, 2015
Peer-review started: May 27, 2015
First decision: June 18, 2015
Revised: July 15, 2015
Accepted: September 7, 2015
Article in press: September 8, 2015
Published online: November 18, 2015
Core Tip

Core tip: In the present study, we present the results of a modified porous tantalum technique for the treatment of femoral head avascular necrosis. The porous tantalum rod was combined with endoscopy, curettage, autologous bone grafting and use of bone marrow aspirates from iliac crest aspiration in 58 hips. The 5-year survival based on conversion to total hip arthroplasty was 93.1% and the respective rate based on disease progression was 87.9%. Stage II disease was associated with statistically significantly better survival rates compared to stage III disease, while no other factor was found to be associated with outcomes.