See the published version of this article at Journal of Orthopaedic Surgery and Research.
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Research article
Edward Thomas Davis
Royal Orthopaedic Hospital NHS Foundation Trust
Corresponding Author
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This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at Journal of Orthopaedic Surgery and Research.
Background: Whilst bony fixation of hip replacement has stable solutions, there remains controversy over which bearing best optimizes longevity and function. Ceramic-on-ceramic (CoC) bearing combinations are associated with lower risk of revision due to aseptic loosening and dislocation. Evidence for long-term functional outcomes of modern, 4th generation CoC bearings is limited. The aim of this study was to analyze outcomes and complications of the R3™ Acetabular System (Smith & Nephew, Inc., Cordova, TN, USA) in combination with BIOLOX® Delta ceramic femoral head in patients undergoing primary total hip arthroplasty (THA).
Methods: Between June 2009 and May 2011, 175 patients (178 hips) were enrolled into a prospective, study at 6 sites in Europe and prospectively followed-up at 3 months and 1, 3, 5, and 7 years postoperative.
Results: Total WOMAC score improved from 63 (range, 22-91) preoperative to 8 (range, 0- 8) at 1-year follow-up and remained unchanged at 7-year follow-up. Modified Harris Hip Score improved from 45 (range, 10-87) preoperative to 83 (range, 25-100) at 3 months, 91 (range, 42-100) at 1 year, and 92 (range, 46, 100) at 7 years. UCLA Activity Rating Scale score improved from 3.3 (range, 1-8) preoperative to 6.2 (range, 2-8) at 1 year; it marginally declined to 5.8 (range, 3-8) at 7-year follow-up. There were 4 trochanteric fractures and 5 patients died of unrelated reasons. Three hips were revised (2 periprosthetic fractures and 1 subluxation). The 7-year cumulative survival rate was 98.3%.
Conclusion: Clinical and functional improvements of THA with CoC bearing are maintained at 7 years postoperative.
Trial registration: ClinicalTrials.Gov, NCT03566082, Registered 10 January 2018 - Retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT03566082
Keywords
bearing, ceramic-on-ceramic (CoC), complications, delta ceramic, modified Harris Hip Score (mHHS), outcomes, R3™ delta Ceramic Acetabular System, total hip arthroplasty (THA), UCLA Activity Rating Scale (UCLA ARS), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC®)
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CURRENT STATUS: Published
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Posted 04 Jan, 2021
Published
On 09 Jan, 2021
No community comments so far
Editorial decision: Accept
On 26 Dec, 2020
Editor assigned
On 16 Dec, 2020
Submission checks complete
On 16 Dec, 2020
Editor invited
On 16 Dec, 2020
No comments provided
Editorial decision: Minor revision
On 31 Aug, 2020
Review #2 received
Received 25 Aug, 2020
Reviewer #2 agreed
On 13 Aug, 2020
Review #1 received
Received 28 Jul, 2020
Reviewer #1 agreed
On 17 Jul, 2020
Reviewers invited
Invitations sent on 16 Jul, 2020
Editor assigned
On 13 Jul, 2020
Editor invited
On 12 Jul, 2020
Submission checks complete
On 12 Jul, 2020
First submitted
On 08 Jul, 2020
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Subject Areas
Orthopedic Surgery
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This preprint is under consideration at Journal of Orthopaedic Surgery and Research. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research article
Edward Thomas Davis
Royal Orthopaedic Hospital NHS Foundation Trust
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
Version 2
Posted 04 Jan, 2021
Published
On 09 Jan, 2021
No community comments so far
Editorial decision: Accept
On 26 Dec, 2020
Editor assigned
On 16 Dec, 2020
Submission checks complete
On 16 Dec, 2020
Editor invited
On 16 Dec, 2020
No comments provided
Editorial decision: Minor revision
On 31 Aug, 2020
Review #2 received
Received 25 Aug, 2020
Reviewer #2 agreed
On 13 Aug, 2020
Review #1 received
Received 28 Jul, 2020
Reviewer #1 agreed
On 17 Jul, 2020
Reviewers invited
Invitations sent on 16 Jul, 2020
Editor assigned
On 13 Jul, 2020
Editor invited
On 12 Jul, 2020
Submission checks complete
On 12 Jul, 2020
First submitted
On 08 Jul, 2020
Subject Areas
Orthopedic Surgery
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at Journal of Orthopaedic Surgery and Research.
Background: Whilst bony fixation of hip replacement has stable solutions, there remains controversy over which bearing best optimizes longevity and function. Ceramic-on-ceramic (CoC) bearing combinations are associated with lower risk of revision due to aseptic loosening and dislocation. Evidence for long-term functional outcomes of modern, 4th generation CoC bearings is limited. The aim of this study was to analyze outcomes and complications of the R3™ Acetabular System (Smith & Nephew, Inc., Cordova, TN, USA) in combination with BIOLOX® Delta ceramic femoral head in patients undergoing primary total hip arthroplasty (THA).
Methods: Between June 2009 and May 2011, 175 patients (178 hips) were enrolled into a prospective, study at 6 sites in Europe and prospectively followed-up at 3 months and 1, 3, 5, and 7 years postoperative.
Results: Total WOMAC score improved from 63 (range, 22-91) preoperative to 8 (range, 0- 8) at 1-year follow-up and remained unchanged at 7-year follow-up. Modified Harris Hip Score improved from 45 (range, 10-87) preoperative to 83 (range, 25-100) at 3 months, 91 (range, 42-100) at 1 year, and 92 (range, 46, 100) at 7 years. UCLA Activity Rating Scale score improved from 3.3 (range, 1-8) preoperative to 6.2 (range, 2-8) at 1 year; it marginally declined to 5.8 (range, 3-8) at 7-year follow-up. There were 4 trochanteric fractures and 5 patients died of unrelated reasons. Three hips were revised (2 periprosthetic fractures and 1 subluxation). The 7-year cumulative survival rate was 98.3%.
Conclusion: Clinical and functional improvements of THA with CoC bearing are maintained at 7 years postoperative.
Trial registration: ClinicalTrials.Gov, NCT03566082, Registered 10 January 2018 - Retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT03566082
Figure 1
Figure 2
Figure 3
Figure 4
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