人工全膝关节置换术后伤口周围瘀斑形成的危险因素分析

目的 探讨人工全膝关节置换术(TKA)后伤口周围瘀斑形成的危险因素.方法 2007年1月至2010年5月对102例患者行单侧TKA,男14例,女88例;年龄5I～79岁,平均(65.9±7.1)岁;平均体质量指数(BMI)为(28.6±4.8)kg/m2.回顾性分析15项临床因素(连续变量7项、分类变量8项)与术后发生伤口周围瘀斑的相关性.连续变量包括:年龄、BMI、手术时间、输血总量、术前、术后血小板计数及术后使用抗凝药物时间,分类变量包括:性别、是否正在使用激素、有无糖尿病、有无原发性高血压、有无关节畸形、术后有无DVT临床表现、有无引流管夹闭及有无使用抗凝药物.102例患者按照是否发生伤口周围瘀斑分成两组:连续变量采用t检验、分类变量采用x2检验进行比较,并将所有15项因素进行多因素Logistic回归分析. 结果 102例患者中14例术后发现伤口周围瘀斑,发生率为13.7%.单因素分析发现输血因素差异有统计学意义(t=2.707,P=0.008);输血量＞400mL与输血量＜400mL比较差异有统计学意义(χ2=7.495,P=0.024).年龄、体质量指数、手术时间、术前、术后血小板计数及术后使用抗凝药物时间等因素对瘀斑发生无影响,差异均无统计学意义(P＞0.05).术后有引流管夹管与无夹管对瘀斑发生有影响,差异有统计学意义(χ2=5.386,P=0.020).多因素分析得到术后输血、有引流管夹管是伤口周围瘀斑形成的重要危险因素(P＜0.05). 结论TKA后输血和伤口引流管夹管或引流不畅出现伤口周围瘀斑的风险高.术后应控制输血量,放置引流管时在明确无大血管损伤的情况下尽量不要用夹管,并保证引流管通畅.     

全膝关节置换术后切口并发症的危险因素分析

目的回顾性研究全膝关节置换术(TKA)术后切口并发症的高危因素。 方法2014年10月至2017年9月在中山大学附属第一医院就诊,因符合膝关节骨关节炎及类风湿性骨关节炎诊断标准及手术适应证,行初次全膝关节置换术的患者共620人(738膝),其中55人(55膝)发生了术后切口并发症,分别采用两样本t检验、χ²检验及logistic回归分析回顾性分析病因、性别、年龄、高血压、糖尿病等相关临床因素,从中寻找导致TKA术后切口出现并发症的高危因素。 结果术后切口并发症的发生率约7.45%,经单因素分析及多因素logistic回归分析后,身体质量指数(BMI)过高、既往吸烟病史及术后使用抗凝药均是TKA术后发生切口并发症的重要危险因素,其比值比(OR)分别为1.199、3.119、2.684(P<0.05)。 结论BMI值过高、既往吸烟史及术后使用抗凝药均是TKA术后发生切口并发症的高危因素,术后应密切观察这些患者的切口情况。对于术后使用抗凝药物的患者,围手术期应注意评估药物预防静脉血栓栓塞症(VTE)、出血及发生切口并发症的风险,及时调整治疗方案。     

踝关节发育不良的人工关节置换术

目的研究人工踝关节置换治疗发育性踝关节不良的中期疗效。方法自1997年10月～2010年12月,人工踝关节置换治疗踝关节疾患66例中踝关节发育不良6例,男5例,女1例,年龄44.5～59岁,平均52.7岁。幼儿时有外伤史4例,不明2例,病程5～11年。结果 6例6踝获6～11年随访,平均8年4个月。术前、后踝关节功能采用Kofoed评价法,术前踝关节功能平均36分（30～40分）4例,17分（0～29）2例;术后优（85～100分）3例,良（75～84分）3例,均无疼痛。仅1例作了步态分析,术前跛行步态（站立相超过58%）,术后正常步态（站立相15%～45%周期内）。结论人工踝关节置换治疗踝关节发育不良具有良好疗效。     

Uncemented total ankle arthroplasty in post-traumatic osteoarthritis: 3- to 7-year follow-up

Ankle replacement in post-traumatic arthritis is a challenging procedure, and adequate data are lacking about its results, as most studies are mainly focused on the results of ankle arthroplasty in primary osteoarthritis and rheumatoid arthritis. We present the results of 7 ankle replacements in posttraumatic arthritis with an uncemented total ankle arthroplasty at an average follow-up of 5.1 years (range, 3–7). One ankle had been revised and one ankle showed an unsatisfactory result (with radiographic signs of loosening of the talar component). The average functional score of the 6 surviving prostheses was 68.3 according to Kofoed and 70.8 according to AOFAS. Range of motion averaged 24.1° at follow-up. No infections nor collapse of the talus occurred. No ankles showed areas of periprosthetic osteolysis. Periarticular calcifications were a common finding (3 patients) but not evidently connected to the clinical result. Radiographic signs of progressive degeneration of the neighboring joints were present in three patients at the talonavicular joint and in one patient at the talocalcaneal joint. Ankle arthroplasty with new generation prostheses is a promising procedure but results are still worse than those of replacement of the other major joints of the lower limb. Replacement of the post-traumatic ankle presents particular difficulties and studies should evaluate the results separately from ankles affected by primary osteoarthritis and rheumatoid arthritis.     

Risk factors for symptomatic venous thromboembolism following surgery for closed ankle fractures: A case-control study

BackgroundWe analyzed risk factors for venous thromboembolism (VTE) within 6 months after surgery for closed ankle fractures.MethodsThis was a case-control study based on data from chart review in a cohort of patients having open reduction and internal fixation (ORIF) for closed ankle fractures in two large general hospitals 2009–2011. Cases with symptomatic VTE (pulmonary embolism or deep venous thrombosis) were identified in the cohort, and additional cases of VTE were identified by computerized search of discharge diagnoses in the same hospitals in 2004–2008 and 2012–2016. In total, we identified 60 cases with VTE and compared with 240 randomly selected controls among 998 patients without VTE in the cohort. Risk factors were assessed using logistic regression analysis.ResultsAmong cases, 27 (45%) had pulmonary embolism, 33 (55%) deep venous thrombosis. Those with VTE were older, had higher BMI, had more often a family history of VTE, and more often had antibiotic prophylaxis during surgery than controls. In multivariable logistic regression analysis age/10 (OR 25.75, 95%CI 3.52–188.44, p = 0.001), (age/10)² (OR 0.77, 95%CI 0.65–0.93, p = 0.005), BMI (1.15 per kg/m², 95%CI 1.07–1.24, p < 0.001) and Charlson comorbidity index ≥2 vs.0 (OR 0.27, 95%CI 0.08–0.92, p = 0.036) and 1 vs. 0 (OR 0.27, 95%CI 0.09–0.86, p = 0.026) were associated with VTE within 6 months of surgery.ConclusionsThe odds of symptomatic VTE within 6 months of ORIF increased with increasing age and BMI, but were lower with increasing comorbidity.     

人工全髋关节置换术后下肢深静脉血栓形成的多因素分析

目的:分析影响人工全髋关节置换术(THA)后下肢深静脉血栓形成(DVT)的危险因素。方法:对98例(112个关节)人工全髋置换术术后DVT发生情况进行分析。其中男55例,女43例;平均年龄59.12岁(41～81岁)。术前及术后7～10d均用彩色多普勒检查双下肢深静脉血流通畅情况及DVT的发生。对17项临床因素与人工关节置换术后DVT形成的相关性进行了分析。结果:术后发生DVT41例,DVT发生率为41.84%(41/98),其中无症状DVT患者占58.54%(24/41)。经Logistic多因素回归分析,与DVT相关的因素有5个,其中年龄、肥胖及肢体延长大于2cm使术后发生DVT的风险分别增加到1.952、3.349及7.376倍(P<0.05);硬膜外麻醉和踝泵练习使术后发生DVT的可能性减少到原来的0.132和0.265(P<0.01)。结论:年龄、肥胖及肢体延长大于2cm是人工关节置换术后发生DVT的危险因素,而硬膜外麻醉和踝泵练习是减少术后发生DVT的保护因素。关节置换术后无症状DVT的大量存在,提示术后最好常规行双下肢彩色多普勒检查,一旦有DVT发生,及时治疗,防止发生致命性肺栓塞。     

人工全髋关节置换术后早期手术部位感染的危险因素分析

目的探讨人工全髋关节置换术（THA）后早期手术部位感染的危险因素。方法回顾分析2000年1月至2010年10月本组所行153例单侧THA的患者,其中男46例,女107例,年龄29～79岁,平均（61．0±8．9）岁。回顾性分析多项临床因素与手术部位感染的相关性。连续变量包括：年龄、手术时间、手术出血量、术前白蛋白血清浓度、伤口引流管停留时间;分类变量包括：性别、有无长期使用激素病史、是否合并糖尿病、有无前次手术史、是否使用骨水泥、预防性抗生素使用方案。153例患者按照是否发生手术部位感染分成两组,对连续变量采用f检验、分类变量采用√检验进行比较。结果153例患者中8例出现手术部位感染,发生率为5．23％。单因素分析发现术前白蛋白血清浓度因素差异有统计学意义（t=2．752,P〈0．05）;白蛋白〈35g／L与白蛋白〉35g／L比较差异有统计学意义（岔=7．23,P〈0．05）。有无长期口服激素、有无前次手术比较差异有统计学意义（其Х^2值分别为3．93与12．38,P〈0．05）。年龄、性别、手术时间、术中出血量、抗生素使用时间、引流管停留时间、是否合并糖尿病、是否使用骨水泥等因素对手术部位感染发生无影响,均无统计学差异。结论THA术前低蛋白血症、前次手术史、长期口服激素史是手术部位感染的高危因素。     

全踝关节置换并发症的meta分析

目的 通过对已发表文献进行汇总分析,总结踝关节置换术并发症的发生率和假体失败率,并总结导致假体失败的高危并发症.方法 通过系统检索1995年1月至2010年12月以英文发表的关于踝关节置换中长期疗效和并发症相关报道的文献.根据纳入标准或排除标准,收集相关结果和数据,通过循证医学meta分析方法,加权汇总分析踝关节置换的手术并发症发生率和假体失败率,总结导致假体失败的高危并发症,并分别汇总各种假体的失败率.结果 有35篇文献纳入研究,共包括4395例假体.发生率最高的三项并发症分别为无菌性松动(12.51%)、术中骨折(11.97%)和骨性撞击(11.27%);导致失败率最高的三项并发症分别为无菌性松动(45.00%)、感染(33.00%)和力线异常(29.00%).meta加权失败率为10.98%(95% CI:8.80%～13.16%),其中STAR假体的失败率为14.20%(95%CI:10.64%～17.76%).结论 无菌性松动、感染和力线异常为踝关节置换术后假体失败的高危并发症,应通过完善的手术操作和合理的术后配合尽量避免其发生.

Abstract：

Objectives To provide a cumulative data about the complications of second or third generation ankle prostheses in the literature, and to provide a summary high-grade complications associated with implant failure.Methods A comprehensive search for all relevant articles published in English from January 1995 to December 2010 was conducted.Two reviewers evaluated each study to determine whether it was eligible for inclusion and collected the data of interest Meta-analytic pooling of results across studies was performed for the complications and failure rate. Results Thirty-five primary studies with 4395implants were identified.The three highest complications of total ankle arthroplasty were aseptic loosening ( 12.51% ), intra-operative bone fracture ( 11.97% ) and bony impingement ( 11.27% ).The three high-grade complications associated with implant failure were aseptic loosening (45.00%), infection (33.00%)and malalignment (29.00%).The pooled mean failure rate was 10.98% (95% CI:8.80% -13.16% ), and the pooled mean failure rate of STAR implant was 14.20% (95% CI:10.64% -17.76% ).Conclusions It is found that aseptic loosening, infection and malalignment are high-grade complications associated with implant failure in total ankle arthroplasty.The orthopaedic surgeons should be more careful in the operation,and the patients should coordinate with the post-operative rehabilitation plan.     

Complications following total ankle arthroplasty: A systematic literature review and meta-analysis

BackgroundTotal ankle arthroplasty (TAA) is increasingly used as a treatment for end-stage ankle arthropathy. However, TAA may be more sensitive to complications, failure and subsequent re-operations compared to ankle arthrodesis. The aim of this systematic review and meta-analysis is to generate an overview of complications of TAA surgery.MethodsPubMed, EMBASE and the Cochrane library were searched between 2000 and 2020 to identify all papers reporting on complications in TAA surgery. Meta-analysis was conducted based on type of complication in TAA surgery. Pooled estimates of complications were calculated using a random effects model. Risk of bias and quality was assessed using the Cochrane risk of bias and ROBINS-I tools. The confidence in estimates was rated and described according to the recommendations of the GRADE working group.ResultsOne hundred twenty-seven studies were included in this systematic review. All combined, they reported on 16.964 TAAs with an average follow-up of 47.99 ± 29.18 months. Complications with highest reported pooled incidence were intra-operative fracture 0.06 (95 %CI 0.04–0.08) (GRADE Very low) and impingement 0.06 (95 %CI 0.04–0.08) (GRADE low) respectively.ConclusionReported complication incidence of TAA surgery is still high and remains a significant clinical problem that can be severely hampering long-term clinical survival of the prosthesis. The results of this systematic review and meta-analysis can help guide surgeons in informing their patient about complication risks. Implementation of more stringent patient selection criteria might contribute to diminishing TAA complication rates.     

髋关节置换术中股骨假体周围骨折危险因素的分析

目的分析髋关节置换术中股骨假体周围骨折的发生情况和危险因素。方法选择本组自2002年1月至2008年12月所有行初次和翻修髋关节置换术患者共3021髋(初次置换术2718髋,翻修术294髋),分析术中股骨假体周围骨折的发生情况,并用Logistic回归分析骨折发生的相关因素,包括性别、年龄、术前诊断、假体类型、固定方式。用2检验进行初次置换和翻修术中发生骨折的差异性检验。结果总的术中股骨假体周围骨折发生率为5.7%(173/3021),其中初次置换发生率为4.0%(110/2718),翻修术发生率为21.4%(63/294)。初次置换应用骨水泥股骨假体术中骨折发生率为1.9%(8/429),非骨水泥股骨假体术中骨折发生率为4.5%(102/2289),初次置换术中骨折82.7%(91/110)发生于干骺端;翻修术应用骨水泥股骨假体术中骨折发生率为18.8%(21/112),非骨水泥股骨假体术中骨折发生率为23.1%(42/182),翻修术术中骨折62%(39/63)发生于骨干部。Logistic回归分析显示:初次髋关节置换术中骨折的危险因素包括性别、术前诊断、固定方式、假体类型;翻修术性别、年龄、假体固定方式不是引起术中骨折的危险因素。应用2检验,翻修术中股骨假体骨折的风险与初次置换相比差异有统计学意义(P0.000),OR值为6.5,95%CI(4.6,9.1)。结论初次髋关节置换术中股骨假体周围骨折的发生率为4.0%,主要发生于干骺端(83.6%),女性、髋关节发育不良、髋部骨折、高位脱位、非骨水泥固定是术中骨折的危险因素;髋关节翻修术中股骨假体周围骨折的发生率(21.4%),远高于初次髋关节置换术,主要发生于骨干部(61.9%),骨折的发生与否可能主要取决于翻修时的骨质情况,性别、年龄、假体固定方式并不是主要的影响因素。     

Corin ankle arthroplasty: Case-series

BackgroundTotal Ankle Arthroplasty (TAA) is complex and can bring a wide variety of complications. Implant revision rates can vary from 4% to 8% in 5 years. Recent publications have shown good results in the short and intermediate follow-up and high patient satisfaction. The pre- and postoperative evaluation of these patients should include physical examination and objective radiographic measurements, which may have predictive value for implant failures and survivorship. In this paper we will present the results obtained with 29 patients treated with the Zennith (Corin Group, UK) total ankle prosthesis in Brazil.MethodsThis paper presents the results obtained with 29 patients treated with the Corin-Zennith prosthesis in three tertiary hospitals in Brazil, with an average follow-up of 5 years. The patients were submitted to clinical and radiographic evaluation. There were seventeen women and twelve men, ranging in age from 35 to 76 years, who were submitted to surgical treatment between January 16, 2013 and May 5, 2017.ResultsSeven patients (24%) presented cysts, being 4 (13.7%) tibial cysts and 3 (10.3%) tibial and talar cysts. Six patients (20.6%) presented talar subsidence and 3 (10.3%) presented tibial subsidence. Three patients (10.3%) presented component wear. VAS reduced and AOFAS and ROM increased in the post-operative period. The development of Cysts was associated with the theta angle and the difference in LTS (between the post and preoperative period) was associated with tibial subsidence. The complications rate was 44.8%, the revision rate was 6.9% and the survivorship rate was 93.1%.ConclusionThe Corin-Zennith prosthesis demonstrated to be a safe implant for improving functional parameters. Functional outcomes were not influenced for most commonly measured radiographic parameters. Further studies are needed to better understand these associations.     

Incidence of ankle arthrodesis and total ankle replacement between 1997 and 2018: A nationwide registry study in Finland

BackgroundSurgical treatment options for end-stage ankle osteoarthritis (OA) include ankle arthrodesis (AA) and total ankle replacement (TAR). We investigated the national incidence of AA and TAR and assessed trends in the surgical management of ankle OA in Finland between 1997 and 2018.MethodsThe Finnish Care Register for Health Care was used to calculate the incidence of AA and TAR based on sex and different age groups.ResultsThe mean age (SD) of patients was similar, 57.8 (14.3) years for AA and 58.1 (14.0) for TAR. TAR showed a 3-fold increase from 0.3 per 100 000 person-years in 1997 to 0.9 per 100 000 person-years in 2018. The incidence of AA operations decreased during the study period from 4.4 per 100 000 person-years in 1997 to 3.8 per 100 000 person-years in 2018. TAR utilization increased notably at the expense of AA between 2001 and 2004.ConclusionTAR and AA are both widely used procedures in the treatment of ankle OA, with AA being the favored option for most patients. The incidence of TAR has remained constant for the past 10 years, indicating appropriate treatment indications and utilization.     

Risk factors for periprosthetic joint infection following total ankle replacement

BackgroundIdentifying preoperative patient characteristics that correlate with an increased risk of periprosthetic joint infection (PJI) following total ankle replacement (TAR) is of great interest to orthopaedic surgeons, as this may assist with appropriate patient selection. The purpose of this study is to systematically review the literature to identify risk factors that are associated with PJI following TAR.MethodsUtilizing the terms “(risk factor OR risk OR risks) AND (infection OR infected) AND (ankle replacement OR ankle arthroplasty)” we searched the PubMed/MEDLINE electronic databases. The quality of the included studies was then assessed using the AAOS Clinical Practice Guideline and Systematic Review Methodology. Recommendations were made using the overall strength of evidence.ResultsEight studies met the inclusion criteria. A limited strength of recommendation can be made that the following preoperative patient characteristics correlate with an increased risk of PJI following TAR: inflammatory arthritis, prior ankle surgery, age less than 65 years, body mass index less than 19, peripheral vascular disease, chronic lung disease, hypothyroidism, and low preoperative AOFAS hindfoot scores. There is conflicting evidence in the literature regarding the effect of obesity, tobacco use, diabetes, and duration of surgery.ConclusionsSeveral risk factors were identified as having an association with PJI following TAR. These factors may alert surgeons that a higher rate of PJI is possible. However, because of the low level of evidence of reported studies, only a limited strength of recommendation can be ascribed to regard these as risk factors for PJI at this time.     

Post-operative management after total ankle arthroplasty: A systematic review of the literature

BackgroundCurrently, there is no consensus on the most appropriate post-operative management for patients undergoing total ankle arthroplasty. The aim of this study is therefore to offer a systematic review of the pertaining literature to identify current post-operative protocols and describe possible differences.MethodsA systematic review to identify recent studies concerning the post-operative management after total ankle arthroplasty was conducted. Five topics were analyzed: length of hospital stay, type and duration of immobilization, weight-bearing management, post-operative pharmacological therapies, adopted rehabilitation scheme.ResultsEighty-four studies met the inclusion criteria and were included in the review process. Most of the papers appear to have conflicting opinions with no consensus and homogeneous protocols.ConclusionDue to various methodological limitations, it is not possible to provide sufficiently supported evidence-based recommendations, and it is therefore difficult to determine the superiority of one post-operative protocol over the others after total ankle arthroplasty.     

Failure modes for total ankle arthroplasty: a statistical analysis of the Norwegian Arthroplasty Register

Background

It is imperative to understand the most common failure modes of total ankle arthroplasty (TAA) to appropriately allocate the resources, healthcare costs, enhancing surgical treatment methods, and improve design and longevity of the implant. The objective of this study was to investigate the primary mode or modes of failure (Loose talar component, loose tibial component, dislocation, instability, misalignment, deep infection, Fracture (near implant), Pain, defect polyethylene (PE), other, and missing information) of TAA implants, so these failure mode/modes can be targeted for future improvement.

Methods

The Norwegian Total Hip Arthroplasty Register 2008 was chosen as the primary source of data since the register have been in existence for 20 years and also gives more specific failure modes than other registries. Tukey–Kramer method was applied to Norwegian Arthroplasty Register.

Results

After the application of the Tukey–Kramer method, it is evident that there is no significant difference between any of the failure modes that are pertinent to the ankle. However, there is significant evidence that the number of ankle arthroplasties are increasing with time.

Conclusions

Since there is no statistical evidence showing which failure mode contributes most to revision surgeries, it is concluded that more information/data is needed to further investigate failure modes in ankle arthroplasties. Since the numbers of such surgeries are increasing, sufficient data should become available in time.     

影响人工关节置换术后下肢深静脉血栓形成的临床风险因素分析

目的 分析影响人工关节置换术后下肢深静脉血栓形成（DVT）的临床风险因素。方法对2004年4月至8月95例128个人工髋、膝关节置换术术后DVT发生情况进行分析。其中男性27例,女性68例,平均年龄60岁（23～78岁）。人工髋关节置换术（THA）43例48髋,人工膝关节置换术（TKA）52例80膝。术前及术后7～10d均用彩色多普勒检查双下肢深静脉血流通畅情况及DVT的发生。对19项临床因素与人工关节置换术后DVT形成的相关性进行了分析。结果术后发生DVT的患者有45人,DVT发生率为47．4％（45／95）,其中无症状DVT患者占57．8％（26／45）。经logistic多因素回归分析,与DVT相关的因素有4个,其中女性、肥胖及骨水泥的使用使术后发生DVT的风险分别增加到10．008、3．094、8．887倍（P〈0．05）;类风湿关节炎的诊断使术后发生DVT的可能性减少到0．194倍（P〈0．05）。结论女性、肥胖及骨水泥的使用是人工关节术后发生DVT的危险因素,而类风湿关节炎（RA）则是减少术后发生DVT的保护因素;关节置换术后无症状DVT的大量存在,提示我们术后最好常规行双下肢彩色多普勒或造影检查,一旦有DVT发生,及时治疗,防止发生致命性肺栓塞。     

Patient-specific instrumentation in total ankle arthroplasty

The recent increase in the adoption of total ankle arthroplasty (TAA) reflects the improvements in implant designs and surgical techniques, including the use of preoperative navigation system and patient-specific instrumentation (PSI), such as custom-made cutting guides. Cutting guides are customized with respect to each patient's anatomy based on preoperative ankle computed tomography scans, and they drive the saw intra-operatively to improve the accuracy of bone resection and implant positioning. Despite some promising results, the main queries in the literature are whether PSI improves the reliability of achieving neutral ankle alignment and more accurate implant sizing, whether it is actually superior over standard techniques, and whether it is cost effective. Moreover, the advantages of PSI in clinical outcomes are still theoretical because the current literature does not allow to confirm its superiority. The purpose of this review article is therefore to assess the current literature on PSI in TAA with regard to current implants with PSI, templating and preoperative planning strategies, alignment and sizing, clinical outcomes, cost analysis, and comparison with standard techniques.     

Revision Risk of Total Hip Arthroplasty With Vitamin E Doped Liners: Results From the Danish Hip Arthroplasty Register

BackgroundVitamin E-doped cross-linked polyethylene (VEPE) liners were introduced in total hip arthroplasty (THA) to reduce wear and risk of aseptic loosening and liner fracture. We report this nationwide population-based study to investigate the safety of VEPE liners for THA compared to cross-linked annealed or remelted polyethylene (XLPE).MethodsWe included THAs from The Danish Hip Arthroplasty Register from January 1, 2008 to June 30, 2019, with uncemented cup, VEPE or XLPE liner, and metal or ceramic head. The outcome was revision due to (1) polyethylene-related endpoints (aseptic loosening, granuloma, osteolysis, or liner fractures) and (2) other endpoints.ResultsA total of 110,803 THAs were assessed for eligibility and 53,842 THAs (46,645 patients) were included in the study: 5069 (9.4%) THAs with a VEPE liner and 48,773 (91.6%) with a XLPE liner. Median observation time was 5.48 (interquartile range 3.80-7.15) years for VEPE and 4.85 (interquartile range 2.68-7.76) for XLPE. VEPE had a lower risk of revision for polyethylene-related endpoints compared to XLPE (hazard ratio [HR] 0.60, 95% confidence interval 0.36-0.98) during complete follow-up. THAs with VEPE liners were associated with increased risk of any revision within the first 3 months (HR 1.62, 1.36-1.94), revision recorded as aseptic loosening within 3 months (HR 4.46, 2.26-8.80), and periprosthetic fracture within 3 months (HR 2.57, 1.98, 3.33).ConclusionVEPE liners had a lower risk of revision due to polyethylene-related endpoints, but a higher risk of all-cause revision within 3 months.