1
|
Tsikandylakis G, Mortensen KRL, Gromov K, Mohaddes M, Malchau H, Troelsen A. The Use of Large Metal Heads in Thin Vitamin E-Doped Cross-Linked Polyethylene Inserts Does Not Increase Polyethylene Wear in Total Hip Arthroplasty: 5-Year Results From a Randomized Controlled Trial. J Arthroplasty 2024; 39:1804-1810. [PMID: 38350518 DOI: 10.1016/j.arth.2024.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 01/30/2024] [Accepted: 02/05/2024] [Indexed: 02/15/2024] Open
Abstract
BACKGROUND Vitamin E-doped cross-linked polyethylene (VEPE) has encouraged the use of larger heads in thinner liners in total hip arthroplasty (THA). However, there are concerns about wear and mechanical failure of the thin liner, especially when metal heads are used. The aim of this randomized controlled trial was to investigate if the use of a large metal head in thin VEPE liner would increase polyethylene wear compared with a standard 32-mm metal head and to compare periacetabular radiolucencies and patient-reported outcomes in THA. METHODS There were 96 candidates for uncemented THA who were randomly allocated to either the largest possible metal head (36 to 44 mm) that could be fitted in the thinnest available VEPE liner (intervention group) or a standard 32-mm metal head (control group). The primary outcome was proximal head penetration, measured with a model-based radiostereometric analysis. Secondary outcomes were periacetabular radiolucencies and patient-reported outcomes. The midterm results of the trial at 5 years are presented. RESULTS The median total proximal head penetration (interquartile range) was -0.04 mm (-0.12 to 0.02) in the intervention group and -0.03 mm (-0.14 to 0.05) in the control group (P = .691). The rates of periacetabular radiolucencies were 1 of 44 and 4 of 42 (P = .197), respectively. Patient-reported hip function and health-related quality of life did not differ between the groups, but participants in the intervention group reported a higher level of activity (median University of California Level of Activity score 7 versus 6, P = .020). There were 5 revisions caused by dislocations (2), periprosthetic fracture (1), stem subsidence (1), or iliopsoas impingement (1). CONCLUSIONS Large metal heads in thin VEPE liners did not increase liner wear and were not associated with liner failure 5 years after THA.
Collapse
Affiliation(s)
- Georgios Tsikandylakis
- Department of Orthopaedics, Region of Västra Götaland, Sahlgrenska University Hospital, Mölndal, Sweden; Institute of Clinical Sciences, Department of Orthopaedics, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Kristian R L Mortensen
- Department of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark; Faculty of Health Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Kirill Gromov
- Department of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark; Faculty of Health Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Maziar Mohaddes
- Department of Orthopaedics, Region of Västra Götaland, Sahlgrenska University Hospital, Mölndal, Sweden; Institute of Clinical Sciences, Department of Orthopaedics, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Henrik Malchau
- Department of Orthopaedics, Region of Västra Götaland, Sahlgrenska University Hospital, Mölndal, Sweden; Institute of Clinical Sciences, Department of Orthopaedics, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Harris Orthopaedic Laboratory, Massachusetts General Hospital, Boston, Massachusetts; Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Anders Troelsen
- Department of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark; Faculty of Health Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
2
|
Thalody HS, Ponzio DY, Santoro AJ, Radack TM, Post ZD, Ong AC. Large Femoral Heads With Small Acetabular Components: An Examination of 10-Year Polyethylene Wear. Orthopedics 2024; 47:118-122. [PMID: 37561101 DOI: 10.3928/01477447-20230804-07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Highly cross-linked polyethylene (HXLPE) has improved polyethylene (PE) wear rates while decreasing osteolysis and aseptic loosening. However, concerns exist regarding the risk of mechanical failure with thin HXLPE liners in total hip arthroplasty (THA). Our purpose was to evaluate long-term outcomes and PE wear rates in primary THAs pairing large femoral heads with small acetabular components and thin HXLPE liners. We retrospectively reviewed 29 patients who underwent 33 primary THAs using large femoral heads (32 or 36 mm) with small acetabular components (48 or 50 mm) and thin HXLPE liners (3.9 or 5.9 mm) at minimum 10-year follow-up. PE liner wear was measured using a validated radiographic technique. Mean age was 66 years, 97% of the patients were women, and mean body mass index was 26.3 kg/m2. Thirty hips (90.9%) had ceramic femoral heads, and 13 hips (39%) had 36-mm femoral heads with 3.9-mm HXLPE liners. All cases used a neutral PE design. Mean linear wear rate and volumetric wear rate were 0.04 mm/year and 39.6 mm3/year, respectively, at mean 10.9-year follow-up. There were no instances of liner fracture, liner dissociation, or revision. Mean Hip disability and Osteoarthritis Outcome Score for Joint Replacement (HOOS, JR) was 92.1. In the largest long-term study of primary THAs using large femoral heads with small acetabular components and thin HXLPE liners, we found low linear and volumetric wear rates and no cases of liner mechanical failures. Thin HXLPE liners are a safe and viable option for THA surgeons. [Orthopedics. 2024;47(2):118-122.].
Collapse
|
3
|
Do MU, Moon NH, Suh KT, Kim JS, Lee SM, Shin WC. Safety of using a large femoral head on thin polyethylene for total hip arthroplasty based on different types of polyethylene. Sci Rep 2023; 13:22769. [PMID: 38123795 PMCID: PMC10733297 DOI: 10.1038/s41598-023-50217-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/16/2023] [Indexed: 12/23/2023] Open
Abstract
The use of a large femoral head in total hip arthroplasty (THA) to stabilize and reduce the incidence of dislocation is on the increase, but concerns arise when combining them with small acetabular components due to potential mechanical failures in thin polyethylene (PE) liners. A single-institution, retrospective cohort study was conducted on 116 patients with minimum 2-year follow-up who received 36-mm femoral heads and acetabular components ≤ 52 mm, using either remelted highly cross-linked polyethylene (remelted HXLPE) or vitamin E-infused HXLPE (VEPE). Osteolysis and implant loosening were not observed in either group. Although a fracture of the PE liner was observed in each group (1.7%), the clinical outcomes were excellent, as the mean modified Harris Hip Score (mHHS) at the last follow-up was 93.5. Moreover, the mean linear wear rates measured by digital imaging software in both groups were low, with 0.035 mm/y in remelted HXLPE and 0.030 mm/y in VEPE. In conclusion, The use of a large femoral head on a thin PE liner can be a viable treatment option in patients who need to prioritize stability; however, careful attention should be paid to mechanical fractures of the PE liner.
Collapse
Affiliation(s)
- Min Uk Do
- Department of Orthopedic Surgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, 20 Geumo-ro, Mulgeum-eup, Yangsan, Gyeongsangnam-do, 626-770, Republic of Korea
| | - Nam Hoon Moon
- Department of Orthopedic Surgery, Pusan National University Hospital, Busan, Republic of Korea
| | - Kuen Tak Suh
- Department of Orthopedic Surgery, Sehung Hospital, Pusan National University School of Medicine, Busan, Republic of Korea
| | - Jung Shin Kim
- Department of Orthopedic Surgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, 20 Geumo-ro, Mulgeum-eup, Yangsan, Gyeongsangnam-do, 626-770, Republic of Korea
| | - Sang-Min Lee
- Department of Orthopedic Surgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, 20 Geumo-ro, Mulgeum-eup, Yangsan, Gyeongsangnam-do, 626-770, Republic of Korea
| | - Won Chul Shin
- Department of Orthopedic Surgery, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, 20 Geumo-ro, Mulgeum-eup, Yangsan, Gyeongsangnam-do, 626-770, Republic of Korea.
| |
Collapse
|
4
|
Borsinger TM, Chandi SK, Puri S, Debbi EM, Blevins JL, Chalmers BP. Total Hip Arthroplasty: An Update on Navigation, Robotics, and Contemporary Advancements. HSS J 2023; 19:478-485. [PMID: 37937097 PMCID: PMC10626925 DOI: 10.1177/15563316231193704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 06/05/2023] [Indexed: 11/09/2023]
Abstract
While total hip arthroplasty (THA) remains effective for improvement of pain and function in patients with osteoarthritis and avascular necrosis, there remain areas of continued pursuit of excellence, including decreasing rates of dislocation, leg length discrepancy, implant loosening, and infection. This review article covers several bearing surfaces and articulations, computer-assisted navigation and robotic technology, and minimally invasive surgical approaches that have sought to improve such outcomes. Perhaps the most significant improvement to THA implant longevity has been the broad adoption of highly cross-linked polyethylene, with low wear rates. Similarly, navigation and robotic technology has proven to more reproducibly achieve intraoperative component positioning, which has demonstrated clinical benefit with decreased risk of dislocation in a number of studies. Given the projected increase in THA over the coming decades, continued investigation of effective incorporation of technology, soft tissue-sparing approaches, and durable implants is imperative to continued pursuit of improved outcomes in THA.
Collapse
Affiliation(s)
- Tracy M Borsinger
- Department of Orthopaedic Surgery, Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY, USA
| | - Sonia K Chandi
- Department of Orthopaedic Surgery, Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY, USA
| | - Simarjeet Puri
- Department of Orthopaedic Surgery, Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY, USA
| | - Eytan M Debbi
- Department of Orthopaedic Surgery, Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY, USA
| | - Jason L Blevins
- Department of Orthopaedic Surgery, Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY, USA
| | - Brian P Chalmers
- Department of Orthopaedic Surgery, Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY, USA
| |
Collapse
|
5
|
Cheung A, Chan PK, Fu H, Cheung MH, Chan VWK, Luk MH, Chiu KY. Metal-on-crosslinked polyethylene in total hip arthroplasty - an excellent combination at fifteen to twenty years of follow-up. INTERNATIONAL ORTHOPAEDICS 2023; 47:2547-2552. [PMID: 37247019 DOI: 10.1007/s00264-023-05844-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/15/2023] [Indexed: 05/30/2023]
Abstract
PURPOSE Cross-linked polyethylene (PE) has been used with great clinical success in total hip arthroplasty (THA) since its debut in the late 1990's. However, reports regarding this bearing couple near the end of its second decade of service are still scant. The aim of this study was to first determine the long term clinical and radiological results and second Investigate what factors affect wear rates using a metal-on-crosslinked PE bearing articulation. METHODS 55 THAs using a single brand of cross-linked liner, cementless cup and 28 mm hip ball were performed in 44 patients. Age, sex, Charlson Comorbidity Index (CCI) and need for revision surgery were recorded. Linear and volumetric wear was determined using the Martell method. RESULTS Mean age at operation was 51.2 (29-73 ± 12.1) years. Mean duration of follow-up was 16.9 years (range 15.0-20.1 ± 1.1 years). Osteolysis was not present in the latest follow-up radiographs. Median linear and volumetric wear rate was 0.038 mm/year (95% CI 0.032-0.047) and 7.115mm3/year (95% CI 6.92-17.25) respectively. Acetabular component position was not found to be related to both linear and volumetric wear. No significant difference was found in the linear and volumetric wear rates of thinner and thicker liners (8 mm or below and > 8 mm) (p = 0.849 and p = 0.64 respectively). CONCLUSION Metal-on-crosslinked PE is associated with low linear and volumetric wear rates which has virtually obviated osteolysis and has translated to excellent survivorship even at long term follow up. In-vivo oxidation does not appear to be of clinical concern at this point.
Collapse
Affiliation(s)
- Amy Cheung
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong SAR, China.
| | - Ping Keung Chan
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong SAR, China
| | - Henry Fu
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong SAR, China
| | - Man Hong Cheung
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong SAR, China
| | - Vincent Wai Kwan Chan
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong SAR, China
| | - Michelle Hilda Luk
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong SAR, China
| | - Kwong-Yuen Chiu
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, 102 Pok Fu Lam Road, Pok Fu Lam, Hong Kong SAR, China
| |
Collapse
|
6
|
Fransen BL, Howard LC, MacDonell T, Bengoa F, Sheridan GA, Garbuz DS, Neufeld ME. Highly crosslinked polyethylene liner thickness does not influence survival in primary total hip arthroplasty after mean follow-up of 13 years: a study of 2,565 hips with a single design liner. J Arthroplasty 2023:S0883-5403(23)00260-7. [PMID: 36931361 DOI: 10.1016/j.arth.2023.03.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/01/2023] [Accepted: 03/05/2023] [Indexed: 03/19/2023] Open
Abstract
BACKGROUND Concerns remain that thinner highly crosslinked polyethylene (HXLPE) liners in modern total hip arthroplasty (THA) may lead to premature liner-related failures or revision. The aim of this study was to evaluate the effect of liner-thickness on survival and revision rates of HXLPE in primary THA after more than 10 years. METHODS We retrospectively identified 2,565 primary THA using HXLPE with a mean follow-up of 13 years (range, 11 to 19). Patients were grouped for each millimeter (mm) of polyethylene thickness. Liner thickness varied from 4.9 to 12.7 mm, with one third measuring less than 6 mm. Primary outcomes were reoperation, all-cause revision, and liner-related revision. RESULTS The reoperation rate was 7.3%, the all-cause revision rate was 5.6%, and the liner-related revision rate was 0.04%. There was no significant difference in all-cause revision when stratified by liner thickness (P=0.286) and liner thickness was not associated with liner-related revision (n=1). There was a statistically, but not clinically significant difference in mean liner thickness for the cohort that underwent reoperation (7.09 vs 6.89 mm, P=0.01) and all-cause revision (7.16 vs 6.89 mm, P=0.031). CONCLUSION In our cohort, liner thickness was not associated with all-cause revision-free survival and there was no clinically significant difference in liner thickness between those patients who did require a reoperation or all-cause revision, and those who did not. There was only 1 liner related failure in the entire cohort. Our results indicate that using thinner HXPE liners to maximize femoral head size in THA is a safe practice that does not lead to increased revision rates or liner failure at a mean 13 years follow-up.
Collapse
Affiliation(s)
- B L Fransen
- Department of Orthopaedics, University of British Columbia, 3rd Floor, 2775 Laurel Street, Vancouver, British Columbia, V5Z 1M9, Canada.
| | - L C Howard
- Department of Orthopaedics, University of British Columbia, 3rd Floor, 2775 Laurel Street, Vancouver, British Columbia, V5Z 1M9, Canada
| | - T MacDonell
- Department of Orthopaedics, University of British Columbia, 3rd Floor, 2775 Laurel Street, Vancouver, British Columbia, V5Z 1M9, Canada
| | - F Bengoa
- Department of Orthopaedics, University of British Columbia, 3rd Floor, 2775 Laurel Street, Vancouver, British Columbia, V5Z 1M9, Canada
| | - G A Sheridan
- Department of Orthopaedics, University of British Columbia, 3rd Floor, 2775 Laurel Street, Vancouver, British Columbia, V5Z 1M9, Canada
| | - D S Garbuz
- Department of Orthopaedics, University of British Columbia, 3rd Floor, 2775 Laurel Street, Vancouver, British Columbia, V5Z 1M9, Canada
| | - M E Neufeld
- Department of Orthopaedics, University of British Columbia, 3rd Floor, 2775 Laurel Street, Vancouver, British Columbia, V5Z 1M9, Canada
| |
Collapse
|
7
|
Fransen BL, Bengoa FJ, Neufeld ME, Sheridan GA, Garbuz DS, Howard LC. Thin highly cross-linked polyethylene liners combined with large femoral heads in primary total hip arthroplasty show excellent survival and low wear rates at a mean follow-up of 12.8 years. Bone Joint J 2023; 105-B:29-34. [PMID: 36587249 DOI: 10.1302/0301-620x.105b1.bjj-2022-0812.r1] [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] [Indexed: 01/02/2023]
Abstract
AIMS Several short- and mid-term studies have shown minimal liner wear of highly cross-linked polyethylene (HXLPE) in total hip arthroplasty (THA), but the safety of using thinner HXLPE liners to maximize femoral head size remains uncertain. The objective of this study was to analyze clinical survival and radiological wear rates of patients with HXLPE liners, a 36 mm femoral head, and a small acetabular component with a minimum of ten years' follow-up. METHODS We retrospectively identified 55 patients who underwent primary THA performed at a single centre, using HXLPE liners with 36 mm cobalt-chrome heads in acetabular components with an outer diameter of 52 mm or smaller. Patient demographic details, implant details, death, and all-cause revisions were recorded. Cox regression and Kaplan-Meier survival was used to determine all-cause and liner-specific revision. Of these 55 patients, 22 had a minimum radiological follow-up of seven years and were assessed radiologically for linear and volumetric wear. RESULTS Overall survival rate for all-cause revision was 94.5% (95% confidence interval (CI) 81.7% to 97.2%) at a mean follow-up of 12.8 years (10.9 to 18.7). Three patients were revised, none for liner wear, fracture, or dissociation. A total of 22 patients were included in the radiological analysis (mean follow-up 9.9 years (7.5 to 13.7)). Mean linear liner wear was 0.085 mm (95% CI -0.086 to 0.257) and the volumetric wear rate was 11.097 mm3/year (95% CI -6.5 to 28.7). CONCLUSION Using HXLPE liners with 36 mm heads in 52 mm acetabular components or smaller is safe, with excellent survival and low rates of linear and volumetric wear at medium-term follow-up. Patients did not require revision surgery for liner complications such as fracture, dissociation, or wear. Our results suggest that the advantages of using larger heads outweigh the potential risks of using thin HXLPE liners.Cite this article: Bone Joint J 2023;105-B(1):29-34.
Collapse
Affiliation(s)
- Bas L Fransen
- Department of Orthopaedics, The University of British Columbia, Vancouver, Canada
| | - Francisco J Bengoa
- Department of Orthopaedics, The University of British Columbia, Vancouver, Canada
| | - Michael E Neufeld
- Department of Orthopaedics, The University of British Columbia, Vancouver, Canada
| | - Gerard A Sheridan
- Department of Orthopaedics, The University of British Columbia, Vancouver, Canada
| | - Donald S Garbuz
- Department of Orthopaedics, The University of British Columbia, Vancouver, Canada
| | - Lisa C Howard
- Department of Orthopaedics, The University of British Columbia, Vancouver, Canada
| |
Collapse
|
8
|
Pairing 40-mm Femoral Heads With the Smallest Compatible Acetabular Components in Total Hip Arthroplasty: Mid-Term Outcomes in 177 Cases. J Arthroplasty 2022; 37:S582-S587. [PMID: 35256235 DOI: 10.1016/j.arth.2022.01.090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/24/2022] [Accepted: 01/29/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Contemporary total hip arthroplasty (THA) often employs larger femoral heads to optimize hip stability. However, pairing 40-mm femoral heads with the smallest compatible acetabular components poses a potential risk for implant failure. The purpose of this study is to evaluate the outcomes of primary THAs using 40-mm femoral heads and the smallest compatible acetabular components. METHODS Between 2007 and 2018, 177 primary THAs involving 40-mm femoral heads and acetabular components ≤56 mm with highly cross-linked polyethylene liners were identified. Mean age was 61 years, 56% were females, and mean body mass index was 32 kg/m2. Cumulative incidences of dislocation, any revision, and any reoperation were determined utilizing a competing risk model. Osteolysis and femoral head penetration were assessed at minimum 8-year follow-up (n = 16). Mean follow-up was 6 years. RESULTS There were no cases of liner fractures or dissociations. The 10-year cumulative incidences of dislocation, any revision, and any reoperation were 3.6%, 4.2%, and 6.8%, respectively. Mean linear femoral head penetration was 0.01 mm/y and mean volumetric wear rate was 50 mm3/y. One THA demonstrated stable, asymptomatic periacetabular radiolucent lines at most recent follow-up. CONCLUSION In 177 primary THAs pairing 40-mm femoral heads with the smallest compatible acetabular components, there were no liner fractures or dissociations. The cumulative incidence of dislocation was modest at 10 years. The cumulative incidences of any revision and any reoperation were low at mid-term. LEVEL OF EVIDENCE IV.
Collapse
|