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Merfort R, Maffulli N, Hofmann UK, Hildebrand F, Simeone F, Eschweiler J, Migliorini F. Head, acetabular liner composition, and rate of revision and wear in total hip arthroplasty: a Bayesian network meta-analysis. Sci Rep 2023; 13:20327. [PMID: 37989863 PMCID: PMC10663607 DOI: 10.1038/s41598-023-47670-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 11/16/2023] [Indexed: 11/23/2023] Open
Abstract
Total hip arthroplasty (THA) is a common procedure for patients suffering from hip pain e.g. from osteoarthritis, osteonecrosis, or hip fractures. The satisfaction of patients undergoing THA is influenced by the choice of implant type and material, with one key factor being the selection of the appropriate material combination for the bearing surface. In this Bayesian network meta-analysis, we investigated the impact of material combinations for the bearing surface on the longevity of hip implants. The wear penetration rate per year and the total wear penetration in the liner resulting from different material combinations, as well as the survival rate at last follow-up, were examined. We analyzed a total of 663,038 THAs, with 55% of patients being women. Mean patient age was 59.0 ± 8.1 years and mean BMI 27.6 ± 2.6 kg/m2. The combination of an aluminium oxide (Al2O3) head and an Al2O3 liner demonstrated the lowest wear penetration at last follow-up and the lowest rate of wear penetration per year. Additionally, the combination of a crosslinked polyethylene (XLPE) liner and a zircon oxide (ZrO2) head demonstrated the lowest rate of revision at last follow-up. These findings underscore the importance of careful material selection for hip implant bearing surfaces to optimize their longevity and patient satisfaction after THA.
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Affiliation(s)
- Ricarda Merfort
- Department of Orthopaedic, Trauma, and Reconstructive Surgery, RWTH University Hospital, 52074, Aachen, Germany
| | - Nicola Maffulli
- Department of Medicine and Psicology, University La Sapienza, Rome, Italy
- Faculty of Medicine, School of Pharmacy and Bioengineering, Keele University, Thornburrow Drive, Stoke-on-Trent, England, UK
- Centre for Sports and Exercise Medicine, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Mile End Hospital, 275 Bancroft Road, London, E1 4DG, England, UK
| | - Ulf Krister Hofmann
- Department of Orthopaedic, Trauma, and Reconstructive Surgery, RWTH University Hospital, 52074, Aachen, Germany
| | - Frank Hildebrand
- Department of Orthopaedic, Trauma, and Reconstructive Surgery, RWTH University Hospital, 52074, Aachen, Germany
| | - Francesco Simeone
- Department of Orthopaedic and Trauma Surgery, Academic Hospital of Bolzano (SABES-ASDAA), Teaching Hospital of the Paracelsus Medical University, 39100, Bolzano, Italy
| | - Jörg Eschweiler
- Department of Orthopaedic, Trauma, and Reconstructive Surgery, RWTH University Hospital, 52074, Aachen, Germany
| | - Filippo Migliorini
- Department of Orthopaedic, Trauma, and Reconstructive Surgery, RWTH University Hospital, 52074, Aachen, Germany.
- Department of Orthopaedic and Trauma Surgery, Academic Hospital of Bolzano (SABES-ASDAA), Teaching Hospital of the Paracelsus Medical University, 39100, Bolzano, Italy.
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Wilson JM, Maradit-Kremers H, Abdel MP, Berry DJ, Mabry TM, Pagnano MW, Perry KI, Sierra RJ, Taunton MJ, Trousdale RT, Lewallen DG. Comparative Survival of Contemporary Cementless Acetabular Components Following Revision Total Hip Arthroplasty. J Arthroplasty 2023; 38:S194-S200. [PMID: 37028772 PMCID: PMC10330048 DOI: 10.1016/j.arth.2023.03.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 04/09/2023] Open
Abstract
BACKGROUND The advent of highly porous ingrowth surfaces and highly crosslinked polyethylene has been expected to improve implant survivorship in revision total hip arthroplasty. Therefore, we sought to evaluate the survival of several contemporary acetabular designs following revision total hip arthroplasty. METHODS Acetabular revisions performed from 2000 to 2019 were identified from our institutional total joint registry. We studied 3,348 revision hips, implanted with 1 of 7 cementless acetabular designs. These were paired with highly crosslinked polyethylene or dual-mobility liners. A historical series of 258 Harris-Galante-1 components, paired with conventional polyethylene, was used as reference. Survivorship analyses were performed. For the 2,976 hips with minimum 2-year follow-up, the median follow-up was 8 years (range, 2 to 35 years). RESULTS Contemporary components with adequate follow-up had survivorship free of acetabular rerevision of ≥95% at 10-year follow-up. Relative to Harris-Galante-1 components, 10-year survivorship free of all-cause acetabular cup rerevision was significantly higher in Zimmer Trabecular Metarevision (hazard ratio (HR) 0.3, 95% confidence interval (CI) 0.2-0.45), Zimmer Trabecular MetaModular (HR 0.34, 95% CI 0.13-0.89), Zimmer Trilogy (HR 0.4, 95% CI 0.24-0.69), DePuy Pinnacle Porocoat (HR 0.24, 95% CI 0.11-0.51), and Stryker Tritanium revision (HR 0.46, 95% CI 0.24-0.91) shells. Among contemporary components, there were only 23 rerevisions for acetabular aseptic loosening and no rerevisions for polyethylene wear. CONCLUSION Contemporary acetabular ingrowth and bearing surfaces were associated with no rerevisions for wear and aseptic loosening was uncommon, particularly with highly porous designs. Therefore, it appears that contemporary revision acetabular components have dramatically improved upon historical results at available follow-up.
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Affiliation(s)
- Jacob M Wilson
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | | | - Matthew P Abdel
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Daniel J Berry
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Tad M Mabry
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Mark W Pagnano
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Kevin I Perry
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | - Rafael J Sierra
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
| | | | | | - David G Lewallen
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
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Salipas A, Poole AS, Teeter MG, Somerville LE, Naudie DD, McCalden RW. A Ten-Year Radiostereometric Analysis of Polyethylene Wear Between Oxidized Zirconium and Cobalt Chrome Articulations in Total Hip Arthroplasty. J Arthroplasty 2022; 37:S692-S696. [PMID: 35245689 DOI: 10.1016/j.arth.2022.02.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 02/14/2022] [Accepted: 02/23/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Oxidized zirconium (OxZi) femoral heads combine the decreased abrasive properties of ceramics with the toughness of metal alloys to lower wear and increase the durability of total hip arthroplasty. The purpose of this study was to compare the 10-year polyethylene wear rates between OxZi/XLPE and cobalt chrome (CoCr)/XLPE articulations. METHODS A radiostereometric analysis (RSA) was performed on two cohorts of 23 patients who underwent total hip arthroplasty using either OxZi/XLPE or CoCr/XLPE at a minimum of 10-year follow-up. Cohorts were matched for age, gender, body mass index (BMI), and diagnosis. Polyethylene wear was measured using RSA to determine total and steady-state wear rates for both cohorts. Preoperative and postoperative patient-reported outcome measures (SF12, HHS, and Western Ontario and McMaster Universities Arthritis Index scores) were compared. RESULTS The mean total head penetration rate was found to be statistically different between the entire cohorts (OxZi 0.048 ± 0.021 mm/y, CoCr 0.035 ± 0.017 mm/y, P = .02) but not when 28-mm heads only (OxZi 0.045 ± 0.016 mm/y, CoCr 0.034 ± 0.017 mm/y, P = .066) were directly compared. The mean steady-state wear rate was not significantly different between the entire cohorts (OxZi 0.031 ± 0.021 mm/y, CoCr 0.024 ± 0.019 mm/y, P = .24) or 28-mm head cohorts (OxZi 0.028 ± 0.019 mm/y, CoCr 0.024 ± 0.019 mm/y, P = .574). Outcome measures showed no statistical difference except for the Harris Hip Score where the OxZi cohort demonstrated higher median scores. CONCLUSION Using RSA to evaluate the 10-year in-vivo head penetration, there was no statistically significant difference in steady-state wear rates between OxZi and CoCr articulations. Both bearing combinations demonstrated wear rates well below the threshold for osteolysis.
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Affiliation(s)
- Andrew Salipas
- Division of Orthopaedic Surgery, Department of Surgery, London Health Sciences, London, Ontario, Canada
| | - Andrew S Poole
- Division of Orthopaedic Surgery, Department of Surgery, London Health Sciences, London, Ontario, Canada
| | - Matthew G Teeter
- Division of Orthopaedic Surgery, Department of Surgery, London Health Sciences, London, Ontario, Canada
| | - Lyndsay E Somerville
- Division of Orthopaedic Surgery, Department of Surgery, London Health Sciences, London, Ontario, Canada
| | - Douglas D Naudie
- Division of Orthopaedic Surgery, Department of Surgery, London Health Sciences, London, Ontario, Canada
| | - Richard W McCalden
- Division of Orthopaedic Surgery, Department of Surgery, London Health Sciences, London, Ontario, Canada
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4
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Bonnheim NB, Van Citters DW, Ries MD, Pruitt LA. Oxidized Zirconium Components Maintain a Smooth Articular Surface Except Following Hip Dislocation. J Arthroplasty 2021; 36:1437-1444. [PMID: 33246784 DOI: 10.1016/j.arth.2020.10.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/26/2020] [Accepted: 10/29/2020] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Oxidized zirconium (OxZr) offers theoretical advantages in total hip and knee arthroplasty (THA and TKA, respectively) relative to other biomaterials by combining the tribological benefits of ceramics with the fracture toughness of metals. Yet, some studies have found that OxZr does not improve outcomes or wear rates relative to traditional bearing materials such as cobalt-chromium (CoCr). Separately, effacement of the thin ceramic surface layer has been reported for OxZr components, though the prevalence and sequelae are unclear. METHODS To elucidate the in vivo behavior of OxZr implants, the articular surfaces of 94 retrieved THA and TKA femoral components (43 OxZr TKA, 21 OxZr THA, 30 CoCr THA) were analyzed using optical microscopy, non-contact profilometry, and scanning electron microscopy. RESULTS We found that OxZr components maintain a smooth articular surface except following hip dislocation. Three of four OxZr femoral heads revised following dislocation exhibited severe damage to the articular surface, including macroscopic regions of ceramic-layer effacement and exposure of the underlying metal substrate; these components were 23-32 times rougher than pristine OxZr controls. When revised for dislocation, OxZr femoral heads were substantially rougher than CoCr femoral heads (median Sa = 0.431 v. 0.020 μm, P = .03). In contrast, CoCr femoral heads exhibited low overall roughness values regardless of whether they dislocated (median Sa = 0.020 v. 0.008 μm, P = .09, CoCr dislocators v. non-dislocators). CONCLUSIONS Effacement of the ceramic surface layer and substantial articular surface roughening is not atypical following dislocation of OxZr femoral heads, making OxZr much less tolerant than CoCr to hip dislocation.
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Affiliation(s)
- Noah B Bonnheim
- Department of Mechanical Engineering, University of California, Berkeley, CA
| | | | | | - Lisa A Pruitt
- Department of Mechanical Engineering, University of California, Berkeley, CA
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Cushnie DW, Lanting BA, McCalden R, Naudie DD, Howard JL. Midterm outcomes of total hip arthroplasty with a modular Birmingham head. Hip Int 2021; 31:103-108. [PMID: 31530026 DOI: 10.1177/1120700019877389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
INTRODUCTION Birmingham Hip Resurfacing (BHR) implants may be combined with a conventional femoral stem to create a modular metal-on-metal total hip arthroplasty (BHR MoM THA). There is little outcome data regarding this construct. This study examines midterm outcomes of BHR MoM THA compared to oxidised zirconium total hip arthroplasty (THA). METHODS A retrospective institutional review identified all patients receiving BHR MoM THA between April 2005 and February 2011 and a matched control cohort of zirconium THA patients. Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Harris Hip Score (HHS), and SF-12 Health status scores were obtained. Revisions and complications were collected from clinical records. Radiographs were assessed for evidence of component malposition, loosening, osteolysis, or heterotopic ossification. RESULTS 63 modular BHR MoM THA were identified in 61 patients (36 with BHR cups, 27 with R3 cups) and 63 zirconium THA in 58 matched controls. Mean follow-up was 58 months. 14 BHR MoM THA hips (22.2%) were revised (4 infections, 1 dislocation, 9 soft tissue reactions) compared to 3 (4.8%) zirconium THA (all infections). At latest follow-up, 18.4% of surviving BHR MoM THA hips were painful compared to 0.5% of zirconium THA controls (p < 0.001). WOMAC, HHS, and SF-12 did not differ significantly between surviving members of the 2 groups. DISCUSSION BHR MoM THA demonstrated a high revision rate, largely for adverse local soft tissue reaction and pain. Among those not revised, many reported some residual pain despite similar quality of life measures to those who received zirconium THA.
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Affiliation(s)
- Duncan W Cushnie
- Division of Orthopaedic Surgery, London Health Sciences Centre and Western University, London, Canada.,Department of Surgery, McMaster University, Hamilton, Canada
| | - Brent A Lanting
- Division of Orthopaedic Surgery, London Health Sciences Centre and Western University, London, Canada
| | - Richard McCalden
- Division of Orthopaedic Surgery, London Health Sciences Centre and Western University, London, Canada
| | - Douglas Dr Naudie
- Division of Orthopaedic Surgery, London Health Sciences Centre and Western University, London, Canada
| | - James L Howard
- Division of Orthopaedic Surgery, London Health Sciences Centre and Western University, London, Canada
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Sobti AS, Busch CA, Afolayan JO, Michael D, Chana R. Early to mid-term outcome of Oxinium on Verilast highly cross-linked polyethylene bearing surface in uncemented total hip arthroplasty. Hip Int 2019; 29:660-664. [PMID: 30630363 DOI: 10.1177/1120700018813316] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
INTRODUCTION We report 5- to 10-year clinical and radiological outcomes of a series of uncemented Oxinium on Verilast (highly cross-linked polyethylene liners) total hip replacements (THAs) using the Anthology stem and R3/Reflection cup system. METHODS 116 THAs were performed by 2 senior authors in 104 patients from 2005 to 2009. The mean age at time of operation was 63.8 (45-80) years. The average length of follow-up was 8.8 years. At final data collection 12 patients had died (13 THAs) and 3 patients (3 THAs) were lost to follow-up. RESULTS In the remaining 100 THAs, the preoperative Harris Hip Score of 39 improved to 91 and Oxford Hip Score improved from 16 to 44 (mean at 5 to 10 years). 100 THAs were available for radiographic analysis: all had stable bony ingrowth of both the stem and cup. Dorr's methods for wear in the 100 THAs showed an average wear <0.01 mm/year and no osteolysis; only 1 case showed 0.22 mm/year with some proximal femoral osteolysis but no cup lesions. There were no dislocations or revisions, survivorship in this series for both components for any cause as an endpoint was 100%. 1 intraoperative calcar fracture was sustained and treated with a cerclage wires, 2 peri-prosthetic fractures occurred and were treated with open reduction and fixation, both healed well with excellent outcomes. DISCUSSION The study has shown good clinical and radiological outcomes at 5-10 years and supports existing data on the potential benefits of this bearing performance in literature.
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Affiliation(s)
- Anshul S Sobti
- Ashford and St Peter's Hospitals NHS Foundation Trust, Chertsey, UK
| | - Constant A Busch
- Ashford and St Peter's Hospitals NHS Foundation Trust, Chertsey, UK
| | - John O Afolayan
- Ashford and St Peter's Hospitals NHS Foundation Trust, Chertsey, UK
| | - Dean Michael
- Ashford and St Peter's Hospitals NHS Foundation Trust, Chertsey, UK
| | - Rishi Chana
- Ashford and St Peter's Hospitals NHS Foundation Trust, Chertsey, UK
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7
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Malahias MA, Atrey A, Gu A, Chytas D, Nikolaou VS, Waddell JP. Is Oxidized Zirconium Femoral Head Superior to Other Bearing Types in Total Hip Arthroplasty? A Systematic Review and Meta-Analysis. J Arthroplasty 2019; 34:1844-1852. [PMID: 31010775 DOI: 10.1016/j.arth.2019.03.072] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/10/2019] [Accepted: 03/26/2019] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Oxidized zirconium (OxZi) is a relatively new type of material that combines the strength of a metal with the surface/wears properties of a ceramic. Our aim was to investigate whether OxZi femoral heads lead to lower polyethylene wear, higher survival rate, and better clinical outcomes than the other bearing types in patients treated with total hip arthroplasty (THA). METHODS Two reviewers independently conducted a systematic search according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses using the MEDLINE/PubMed database and the Cochrane Database of Systematic Reviews. These databases were queried with the terms: a. "oxidized" AND "zirconium" AND "total" AND "hip" AND "arthroplasty"; b. "oxinium" AND "total" AND "hip" AND "arthroplasty". The primary outcome measures were the survival rate of the bearing surfaces as well as the polyethylene wear. RESULTS The vast majority (85.7%) of the studies, which reported the mean polyethylene wear rate, showed that there was not any significant difference between OxZi and cobalt-chrome (CoCr) femoral heads (rate ratio: 0.836; 95% confidence interval: 0.362-1.928; P = .674). All studies comparing the survival rate of OxZi and CoCr femoral heads illustrated almost excellent survivorship with both implants. CONCLUSION OxZi femoral heads did not lead to lower polyethylene wear rate or higher survival rate, when compared with CoCr femoral heads in patients treated with THA. On the basis of these results and taking into account the higher cost of these implants, we would not recommend the routine use of OxZi femoral heads in primary THAs. LEVEL OF EVIDENCE Systematic review and meta-analysis of therapeutic studies I-III.
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Affiliation(s)
- Michael-Alexander Malahias
- 2nd Orthopaedic Department, National & Kapodistrian University of Athens, School of Medicine, Nea Ionia, Athens, Greece
| | - Amit Atrey
- Division of Orthopaedics, Department of Surgery, St Michaels Hospital, University of Toronto, Canada, Toronto, Ontario, Canada
| | - Alex Gu
- George Washington School of Medicine and Health Sciences, Washington DC
| | - Dimitrios Chytas
- 2nd Orthopaedic Department, National & Kapodistrian University of Athens, School of Medicine, Nea Ionia, Athens, Greece
| | - Vasileios S Nikolaou
- 2nd Orthopaedic Department, National & Kapodistrian University of Athens, School of Medicine, Nea Ionia, Athens, Greece
| | - James P Waddell
- 2nd Orthopaedic Department, National & Kapodistrian University of Athens, School of Medicine, Nea Ionia, Athens, Greece
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8
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Zou AH, Novikov D, Feng JE, Anoushiravani AA, Schwarzkopf R, Vigdorchik JM. Liner dissociation leading to catastrophic failure of an Oxinium femoral head. Arthroplast Today 2018; 5:21-25. [PMID: 31020016 PMCID: PMC6470327 DOI: 10.1016/j.artd.2018.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 09/10/2018] [Accepted: 09/25/2018] [Indexed: 11/15/2022] Open
Abstract
Oxinium is an alternative bearing surface designed to emulate the superior wear and scratch properties of ceramic femoral heads in total hip arthroplasty while minimizing the risk for brittle fracturing. However, recent studies have indicated that hip dislocation following total hip arthroplasty may be a risk factor for catastrophic failure of the femoral head. Here, we report on a novel case of a catastrophic Oxinium head and polyethylene liner failure in the absence of previous hip dislocation or trauma and review the probable failure mechanism. This report underscores the need to be vigilant about proper acetabular cup and liner seating, particularly in the setting of Oxinium femoral head use. In the event of Oxinium head failure, metallosis may compromise stabilizing soft tissues including the abductors. Dual-mobility articulation, which was successful in this case, is one option to consider when the risk for chronic redislocation is elevated.
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Affiliation(s)
- Anthony H Zou
- Division of Adult Reconstructive Surgery, NYU Langone Orthopedics, NYU Langone Health, New York, NY, USA
| | - David Novikov
- Division of Adult Reconstructive Surgery, NYU Langone Orthopedics, NYU Langone Health, New York, NY, USA
| | - James E Feng
- Division of Adult Reconstructive Surgery, NYU Langone Orthopedics, NYU Langone Health, New York, NY, USA
| | - Afshin A Anoushiravani
- Division of Adult Reconstructive Surgery, NYU Langone Orthopedics, NYU Langone Health, New York, NY, USA.,Department of Orthopaedics, Albany Medical Center, Albany, NY, USA
| | - Ran Schwarzkopf
- Division of Adult Reconstructive Surgery, NYU Langone Orthopedics, NYU Langone Health, New York, NY, USA
| | - Jonathan M Vigdorchik
- Division of Adult Reconstructive Surgery, NYU Langone Orthopedics, NYU Langone Health, New York, NY, USA
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Teeter MG, MacLean CJ, Somerville LE, Howard JL, McCalden RW, Lanting BA, Vasarhelyi EM. Wear performance of cobalt chromium, ceramic, and oxidized zirconium on highly crosslinked polyethylene at mid-term follow-up. J Orthop 2018; 15:620-623. [PMID: 29881207 DOI: 10.1016/j.jor.2018.05.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/06/2018] [Indexed: 10/17/2022] Open
Abstract
Patients with THA using a ceramic head and using an OxZr head were each matched to patients with a CoCr head. Mean implantation time was 5 years. There was no difference in steady state wear rate between the ceramic (0.066 ± 0.050 mm/year) and CoCr match groups (0.052 ± 0.041 mm/year), or between the OxZr (0.022 ± 0.029 mm/year) and CoCr match groups (0.048 ± 0.071 mm/year). Follow-up into the second decade will be necessary before any changes in THA wear rate from using ceramic or OxZr bearings may be appreciated clinically with available imaging techniques.
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Affiliation(s)
- Matthew G Teeter
- Department of Surgery, Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre, London, Ontari, Canada.,Surgical Innovation Program, Lawson Health Research Institute, London, Ontario, Canada.,Imaging Research Laboratories, Robarts Research Institute, London, Ontario, Canada
| | - Colin J MacLean
- Department of Surgery, Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre, London, Ontari, Canada
| | - Lyndsay E Somerville
- Department of Surgery, Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre, London, Ontari, Canada
| | - James L Howard
- Department of Surgery, Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre, London, Ontari, Canada
| | - Richard W McCalden
- Department of Surgery, Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre, London, Ontari, Canada
| | - Brent A Lanting
- Department of Surgery, Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre, London, Ontari, Canada
| | - Edward M Vasarhelyi
- Department of Surgery, Schulich School of Medicine & Dentistry, Western University and London Health Sciences Centre, London, Ontari, Canada
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10
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CORR Insights®: Polyethylene Wear Increases in Liners Articulating With Scratched Oxidized Zirconium Femoral Heads. Clin Orthop Relat Res 2018; 476:193-195. [PMID: 29389783 PMCID: PMC6259724 DOI: 10.1007/s11999.0000000000000122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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