首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 125 毫秒
1.
Background The role of growth factors in prosthesis loosening is unclear. We evaluated the levels of plate-let-derived growth factor BB (PDGF-BB), transforming growth factors β1 (TGF-β1) and β2 (TGF-β2), both before and after activation, in patients with aseptic loosening of their hip prosthesis.

Patients and methods 26 patients with loosened hip implants were compared with 21 patients who had stable hip prostheses, and 28 patients undergoing primary hip replacement. The plasma levels of the growth factors were analyzed by enzyme immunoassay. TGF-β1 and TGF-β2 were determined both before and after activation.

Results Patients with aseptic loosening had significantly lower PDGF-BB levels than patients undergoing primary hip replacement, and significantly lower TGF-β2 levels than patients with a stable implant. Patients with stable prostheses had significantly higher TGF-β1 and TGF-β2 levels than patients undergoing primary hip replacement.

Interpretation It is possible that the prosthetic implant itself causes a local increase in PDGF-BB, TGF-β1 and TGF-β2, released by osteoblasts and other cells in the microenvironment. The plasma PDGF-BB measured does not correspond to local release, which is probably due to local consumption or degradation. The consumption of PDGF-BB is low in stable implants, and TGF-β1 and TGF-β2 levels increase during bone formation. In loosening, PDGF-BB consumption is higher and causes a significant reduction in plasma levels as compared to presurgery. The formation of poor-quality bone may be related to the scarce increase in TGF-β1 and TGF-β2. In conclusion, compared with patients with a stable implant, a reduction in bone-forming growth factors appears to occur in individuals with aseptic loosening.  相似文献   

2.
3.
BackgroundTotal joint arthroplasty (TJA) is one of the most frequent surgical procedures performed in modern hospitals, and aseptic loosening is the most common indication for revision surgeries. We conducted a systemic exploration of potential genetic determinants for early aseptic loosening.MethodsData from 423 patients undergoing TJA were collected and analyzed. Three analytical groups were formed based on joint arthroplasty status. Group 1 were TJA patients without symptoms of aseptic loosening of at least 1 year, group 2 were patients with primary TJA, and group 3 were patients receiving revision surgery because of aseptic loosening. Genome-wide genotyping comparing genotype frequencies between patients with and without aseptic loosening (group 3 vs groups 1 and 2) was conducted. A case-control association analysis and linear modeling were applied to identify the impact of the identified genes on implant survival with time to the revision as an outcome measure.ResultsWe identified 52 single-nucleotide polymorphisms (SNPs) with a genome-wide suggestive P value less than 10−5 to be associated with the implant loosening. The most remarkable odds ratios (OR) were found with the variations in the IFIT2/IFIT3 (OR, 21.6), CERK (OR, 12.6), and PAPPA (OR, 14.0) genes. Variations in the genotypes of 4 SNPs—rs115871127, rs16823835, rs13275667, and rs2514486—predicted variability in the time to aseptic loosening. The time to aseptic loosening varied from 8 to 16 years depending on the genotype, indicating a substantial effect of genetic variance.ConclusionDevelopment of the aseptic loosening is associated with several genetic variations and we identified at least 4 SNPs with a significant effect on the time for loosening. These data could help to develop a personalized approach for TJA and loosening management.  相似文献   

4.
《Acta orthopaedica》2013,84(3):342-345
Background?Aseptic loosening is the most important complication after total hip arthroplasty (THA). The nervous system has been implicated in the etiology and pathogenesis of joint diseases.

Methods?We compared levels of substance P (SP) and calcitonin gene‐related peptide (CGRP) in pseudosynovial fluid from patients with aseptic loosening after THA with those in synovial fluid from patients undergoing primary THA for osteoarthritis, who served as controls. Levels of SP and CGRP were measured using an enzyme immunoassay.

Results?We found that SP and CGRP levels were significantly higher in the pseudosynovial fluid of loose artificial joints than in the synovial fluid of controls.

Interpretation?SP and CGRP may have a role in aseptic loosening.  相似文献   

5.
BackgroundInstability and aseptic loosening are the two main complications after revision total hip arthroplasty (rTHA). Dual-mobility (DM) cups were shown to counteract implant instability during rTHA. To our knowledge, no study evaluated the 10-year outcomes of rTHA using DM cups, cemented into a metal reinforcement ring, in cases of severe acetabular bone loss. We hypothesized that using a DM cup cemented into a metal ring is a reliable technique for rTHA at 10 years, with few revisions for acetabular loosening and/or instability.MethodsThis is a retrospective study of 77 rTHA cases with severe acetabular bone loss (Paprosky ≥ 2C) treated exclusively with a DM cup (NOVAE STICK; Serf, Décines-Charpieu, France) cemented into a cage (Kerboull cross, Burch-Schneider, or ARM rings). Clinical scores and radiological assessments were performed preoperatively and at the last follow-up. The main endpoints were revision surgery for aseptic loosening or recurring dislocation.ResultsWith a mean follow-up of 10.7 years [2.1-16.2], 3 patients were reoperated because of aseptic acetabular loosening (3.9%) at 9.6 years [7-12]. Seven patients (9.45%) dislocated their hip implant, only 1 suffered from chronic instability (1.3%). Cup survivorship was 96.1% at 10 years. No sign of progressive radiolucent lines were found and bone graft integration was satisfactory for 91% of the patients.ConclusionThe use of a DM cup cemented into a metal ring during rTHA with complex acetabular bone loss was associated with low revision rates for either acetabular loosening or chronic instability at 10 years.  相似文献   

6.
《The Journal of arthroplasty》2020,35(10):2966-2971
BackgroundPelvic discontinuity is a challenging complication in revision total hip arthroplasty. One technique that has garnered enthusiasm with limited data is acetabular distraction. Acetabular distraction provides stability via elastic recoil of the pelvis. The aim of this study is to report implant survivorship, radiographic results, clinical outcomes, and complications in the largest independent series of discontinuities treated with acetabular distraction.MethodsWe retrospectively identified all revision total hip arthroplasties with a pelvic discontinuity between 2005 and 2017. Of the 162 patients, 31 were treated with distraction. Mean age was 67 years, with 71% female. Mean body mass index was 28 kg/m2, and mean follow-up was 3 years.ResultsThe 2-year survivorship free from revision for aseptic loosening, re-revision for any reason, and reoperation were 97%, 93%, and 87%, respectively. There were 3 re-revisions including 1 for aseptic loosening, 1 conversion to a dual mobility for instability, and 1 two-stage exchange for infection. At last follow-up, 3 acetabular components did not have evidence of osteointegration. Only patients with osteointegration to both the ilium and ischium had evidence of a healed discontinuity. The mean Harris Hip Score improved from 43 preoperatively to 77 postoperatively (P < .0001). The most common complication was a partial sciatic nerve palsy that occurred in 4 patients.ConclusionIn this series utilizing pelvic distraction, there was excellent 2-year survivorship free from revision for aseptic loosening. Despite several discontinuities persisting, 90% of patients had radiographic evidence of implant osteointegration, and clinical outcomes improved significantly. The most common complication was a partial sciatic nerve palsy.Level of EvidenceIV Case Series.  相似文献   

7.

Background

Aseptic loosening after total hip arthroplasty is likely related to nicotine ingestion. However, aseptic loosening as a direct consequence of smoking habits has not been described with regard to proximal mega-prosthetic femoral replacement. The aim of the present study was to evaluate the association between nicotine consumption and aseptic loosening rates after proximal mega-prosthetic femoral replacement.

Materials and methods

A consecutive series of patients who received mega-prosthetic replacement of the proximal femur at our hospital between 2005 and 2015 were included. Their files were reviewed and evaluated for the influence of smoking on aseptic loosening rates. All living patients were invited to complete a functional follow-up assessment at our clinic.

Results

Twenty-six patients with 27 prostheses were included. Five patients were active smokers, and 21 patients were non-smokers. Aseptic loosening was observed in three patients in the smoking group, whereas none of the non-smokers developed aseptic loosening. Fisher’s exact test showed a relationship between nicotine consumption and aseptic loosening of the prostheses (p = 0.003).

Conclusions

Smoking increases the likelihood of aseptic loosening after proximal mega-prosthetic femoral replacement.

Level of evidence

Level 4 according to Oxford Centre of Evidence-Based Medicine 2011.
  相似文献   

8.
《The Journal of arthroplasty》2023,38(7):1378-1384
BackgroundAseptic loosening following total knee arthroplasty remains one of the leading causes of long-term failure. Radiographic identification of loose implants can be challenging with standard views. The purpose of this study was to compare the incidence of novel radiographic findings of anterior heterotopic bone formation and medial or lateral cyst formation in patients who have aseptic loosening to patients who have well-fixed implants.MethodsA retrospective radiographic review was performed on 48 patients’ revised secondary to aseptic tibial loosening. This cohort was compared to two additional cohorts; 48 patients returning for routine postoperative follow-up (control 1), and 48 patients revised secondary to infection or instability who had well-fixed implants (control 2).ResultsThere were 41 of 48 (85%) patients who had implant loosening and were noted to have anterior heterotopic bone formation compared to 1 of 48 (2%) patients in control 1 and 3 of 48 (6%) patients in control 2 (P ≤ .0001). There were 43 of 48 (90%) patients who had implant loosening and had medial cyst formation compared to 3 of 48 (6%) patients in control 1 and 5 of 48 (10%) in control 2 (P ≤ .0001). There were 42 of 48 (88%) patients who had implant loosening and had lateral cyst formation compared to 2 of 48 (4%) patients in control 1 and 4 of 48 (8%) in control 2 (P ≤ .0001).ConclusionIn this study, we describe novel radiographic findings of anterior heterotopic bone formation and cysts that develop in patients who have aseptic loosening following primary total knee arthroplasty. We believe that these radiographic features may lead to easier identification of aseptic loosening.  相似文献   

9.
BackgroundPatients undergoing primary total hip arthroplasty (THA) following pelvic radiation have historically had poor survivorship free of aseptic acetabular component loosening. However, several series have reported improved results with tantalum acetabular components. The purpose of this study is to assess implant survivorship, radiographic results, and clinical outcomes of contemporary, porous titanium acetabular components in the setting of prior pelvic radiation.MethodsWe retrospectively reviewed 33 patients (38 hips) with prior pelvic radiation between 2006 and 2016 who underwent primary THA. The mean overall pelvic radiation dose was 6300 cGy with a mean latency period to THA of 5 years. The most common acetabular component was Pinnacle (DePuy Synthes) in 76%. Eight-seven percent of cups were fixed with screws. The mean age at primary THA was 74 years, 76% were male, and the mean body mass index was 30 kg/m2. Mean follow-up was 5 years.ResultsThe 10-year survivorship free of revision for aseptic loosening, free of any revision, and free of any reoperation were 100%, 89%, and 89%, respectively, when accounting for death as a competing risk. There were 3 revisions; one each for taper corrosion, recurrent dislocation, and infection. Radiographically, all cups had evidence of osteointegration and none had radiographic evidence of loosening. The mean Harris Hip Score improved from 50 to 84 postoperatively (P < .0001).ConclusionContemporary porous titanium acetabular components with supplemental screws provided excellent implant fixation in patients with prior therapeutic pelvic radiation. At 10 years, 100% of these components were free of revision for aseptic loosening and 100% were radiographically well-fixed.Level of EvidenceLevel IV, Therapeutic.  相似文献   

10.
One of the most important factors that seems to be involved in total hip replacement is periprosthetic osteolysis. As it is well documented that several interleukins (ILs) are triggered in periprosthetic osteolysis, this article investigates the role of five ILs in primary and replacement total hip arthroplasty, understanding if one of them can also predict hip implant loosening, secondary surgery, and prosthesis breakage. The levels of IL-1α, 1β, 6, 8, and 10 in synovial fluid were examined, using a high sensitivity enzyme-linked immunosorbent assay (ELISA) test kit (Pierce Biotechnology, Inc., Rockford, IL, USA) to determine whether these cytokines could be used as markers of enhanced periprosthetic osteolysis, leading to aseptic loosening of total/partial hip arthroplasty or revision surgery. Synovial fluid was harvested from 23 patients undergoing primary total hip arthroplasty and 35 patients undergoing total/partial hip revision due to aseptic loosening. In the revision group, four cases had suffered a prosthesis fracture and five were second revisions. ILs 6 and 8 were significantly higher in the revisions (305 and 817 pg/mL) compared with the primary arthroplasties (151 and 151 pg/mL), including cases with prosthesis fracture and those requiring a second revision. IL-10 levels were lower (not significantly) in second revision samples compared with those of revision samples. IL-1β levels were significantly higher in prosthesis fracture samples compared with those of all the other revision samples. No statistically significant differences in IL levels were found between osteoarthritis samples and those of other diseases. These results are a step forward to elucidating the complex network of events that are involved in loosening of hip implants.  相似文献   

11.
BackgroundHighly porous-coated titanium acetabular components have a high coefficient of friction and ultraporous surfaces to enhance bone ingrowth and osseointegration in total hip arthroplasty (THA). There have been concerns with the development of early radiolucent lines and aseptic loosening of highly porous acetabular components. It is unclear whether these concerns relate to a specific implant or the entire class. The aim of this study is to compare the revision rates for aseptic loosening of highly porous acetabular combinations in primary THA using data from a large joint replacement registry.MethodsData were retrieved from the Australian Orthopedic Association National Joint Replacement Registry for the study period September 1999 to December 2019. All primary THA procedures recorded and performed for osteoarthritis using the most common combinations for each highly porous acetabular component with highly cross-linked polyethylene and a 32-mm or 36-mm femoral head were included. The primary outcome measure was revision for aseptic loosening of the acetabular component. Results were adjusted for patient age and gender.ResultsThere were 20,993 primary THA procedures performed for osteoarthritis using a highly porous acetabular component across 6 combinations. Relative to the POLARSTEM/R3 (StikTite), the Exeter V40/Tritanium had a significantly higher risk of revision for aseptic loosening of the acetabular component (hazard ratio 0.21, 95% confidence interval 0.06-0.74, P = .014). There was no difference between any other highly porous acetabular component combination and no late revisions for aseptic loosening.ConclusionHighly porous-coated titanium acetabular components have low rates of aseptic loosening with long-term follow-up. A difference between components may exist.Level of EvidenceLevel III.  相似文献   

12.
13.
ObjectiveThis study aimed to evaluate if the acetabulum's conservative reaming with preservation of the medial acetabular bone and anatomic placement of the acetabular implant in cementless total hip arthroplasty (THA) has any adverse effect on the radiological outcome, long term implant survival and patient satisfaction.Methods106 consecutive patients were identified from a single surgeon practice who underwent cementless THA from 2005 to 2010. Twenty-one were lost to follow up, and five patients died unrelated to THA. Eighty patients were available for the study. The mean follow-up was 8.6 years (range 5.7–11.6). The mean age was 61.9 years. Immediate pre- and postoperative radiographs were reviewed to calculate combined offset (Acetabular offset – AO, plus Femoral offset – FO). Implant failure, aseptic loosening, revision surgery, patient satisfaction and complications were assessed on long-term follow-up.ResultsAcetabular component survival was 100% with no aseptic failure. None of the patients had revision surgery for any cause. The mean difference in the acetabular offset and combined offset postoperatively was within 3 mm. One patient had a dislocation, and one had a prosthetic joint infection (PJI). 95% of the patients in this series would recommend the hip replacement procedure to others, with a mean satisfaction score of 8.7 (range; 1–10).ConclusionConservative acetabular reaming with preservation of medial acetabulum bone with the anatomic placement of the acetabular implant in cementless THA is safe with no adverse effects on implant survival and patient satisfaction. It offers the advantage of preserving the patient's bone stock, which would potentially be of significant advantage to the patient and the surgeon in case of revision arthroplasty.  相似文献   

14.
《The Journal of arthroplasty》2021,36(12):3959-3965
BackgroundDistal femoral replacement (DFR) is commonly used to manage massive bone loss around the knee arising from aseptic loosening, periprosthetic joint infection (PJI), and distal femoral fractures. A number of studies report the outcome of DFR with considerable variation in long-term survivorship. This study investigated the outcome of DFR for patients with aseptic failures, fractures, and PJI.MethodsA retrospective review of 182 patients who underwent DFR for non-oncological indications between 2002 and 2018 was conducted. Data collected included the following: indication, postoperative complications, reoperation, revision, and follow-up. Implant survivorship with Kaplan-Meier curves along with a log-rank test for different preoperative indications was performed. A Cox regression model was used to evaluate the risk of revision.ResultsThe overall postoperative complication rate was very high at 36%. The most common complication was PJI (17%). The rate of reoperation for any cause was 29.7%, and the revision rate was 13.7%. The most common cause of re-revision was PJI (7.1%). Revision-free survivorship of the DFR implant was 91.6% at 1 year, 87.9% at 2 years, 82.5% at 5 years, and 73.4% at 10 years. Patients who had a prior-PJI had the lowest survivorship compared to patients undergoing DFR for management of periprosthetic fracture and mechanical loosening. Additionally, the prior-PJI group was at a fourfold increased risk of postoperative PJI compared to the aseptic group.ConclusionDFR is a valuable reconstructive option for patients with massive bone loss around the knee. However, patients undergoing DFR are at high risk of complications, reoperations, and failure.  相似文献   

15.
《The Journal of arthroplasty》2020,35(8):2155-2160
BackgroundTotal hip arthroplasty (THA) in patients with abnormal proximal femoral anatomy requires an individualized treatment approach to prevent complications. Metaphyseal engaging stems in this population risk fracture, size/offset mismatch, and aseptic loosening. The Wagner conical femoral implant is a short diaphyseal engaging femoral stem that could improve treatment success in this difficult patient population.MethodsWe identified 302 consecutive patients undergoing THA using the Wagner cone femoral prosthesis between January 2010 and January 2017. Clinical, radiographic, and patient-reported outcomes were obtained through chart review and radiographic measurements of postoperative X-rays. We used multivariate analysis to determine predictors of poor outcomes. Kaplan-Meier curves were created to demonstrate implant survivorship with reoperation and revision as endpoints. The average follow-up was 3.2 years, with a minimum of 2 years.ResultsThe implant retention survival rate during the 3.2-year study period was 98.7%. The overall reoperation rate was 4.2%, with infection followed by fracture being the most common reasons for reoperation. No patients were revised for aseptic loosening, and no patients were revised for subsidence. The average subsidence was 1.1 mm. The Harris Hip Score improved from 48.6 ± 7.3 (range, 28-64) preoperatively to 86.1 ± 8.5 (range, 66-100) at latest follow-up. The patient-reported satisfaction rate was 98.3%.ConclusionThe Wagner cone femoral prosthesis demonstrated excellent clinical, radiographic, and patient-reported functional outcomes at midterm follow-up. We recommend use of the Wagner cone in THA patients with challenging proximal femoral anatomy, small femoral diameter, or poor metaphyseal bone quality.  相似文献   

16.
We studied the plasma levels of coagulation inhibitors, of fibrinolysis and PDGF-AB, in patients with aseptic loosening of the hip replacement. 23 patients having loose hip prostheses were compared to patients having 15 stable hip prostheses, and 26 undergoing primary hip replacement. The levels of the coagulation inhibitors antithrombin III and protein C were determined by chromogenic assays. Fibrinolysis was evaluated by the changes in fibrin degradation products (D-dimer), determined by enzyme immunoassay, and in the plasminogen activator inhibitor-1 (PAI-1), by enzymatic assay. PDGF-AB was determined by enzyme immunoassay. In patients with failed prostheses, we found fibrinolysis activation, as shown by a statistically significant increase in D-dimer and a significant decrease of PAI-1. No significant differences were obseved in antithrombin III, protein C, and PDGF-AB. PAI-1 and D-dimer assays in failed prostheses may be useful for the pathogenetic evaluation, because the continuous inflammatory stimulus associated with fibrin deposition may also affect the systemic levels.  相似文献   

17.
We studied the plasma levels of coagulation inhibitors, of fibrinolysis and PDGF-AB, in patients with aseptic loosening of the hip replacement. 23 patients having loose hip prostheses were compared to patients having 15 stable hip prostheses, and 26 undergoing primary hip replacement. The levels of the coagulation inhibitors antithrombin III and protein C were determined by chromogenic assays. Fibrinolysis was evaluated by the changes in fibrin degradation products (D-dimer), determined by enzyme immunoassay, and in the plasminogen activator inhibitor-1 (PAI-1), by enzymatic assay. PDGF-AB was determined by enzyme immunoassay. In patients with failed prostheses, we found fibrinolysis activation, as shown by a statistically significant increase in D-dimer and a significant decrease of PAI-1. No significant differences were obseved in antithrombin III, protein C, and PDGF-AB. PAI-1 and D-dimer assays in failed prostheses may be useful for the pathogenetic evaluation, because the continuous inflammatory stimulus associated with fibrin deposition may also affect the systemic levels.  相似文献   

18.
We studied the plasma levels of coagulation inhibitors, of fibrinolysis and PDGF-AB, in patients with aseptic loosening of the hip replacement. 23 patients having loose hip prostheses were compared to patients having 15 stable hip prostheses, and 26 undergoing primary hip replacement. The levels of the coagulation inhibitors antithrombin III and protein C were determined by chromogenic assays. Fibrinolysis was evaluated by the changes in fibrin degradation products (D-dimer), determined by enzyme immunoassay, and in the plasminogen activator inhibitor-1 (PAl-1), by enzymatic assay. PDGF-AB was determined by enzyme immunoassay. In patients with failed prostheses, we found fibrinolysis activation, as shown by a statistically significant increase in D-dimer and a significant decrease of PAI-1. No significant differences were obseved in antithrombin III, protein C, and PDGF-AB. PAI-1 and D-dimer assays in failed prostheses may be useful for the pathogenetic evaluation, because the continuous inflammatory stimulus associated with fibrin deposition may also affect the systemic levels.  相似文献   

19.
陈剑锋  王茂鹏  杜远立  严超  魏国  向正宗 《骨科》2014,5(4):210-214
目的 分析人工髋关节无菌性松动应用长柄型假体进行翻修的治疗效果.方法 回顾性分析2011年3月至2013年4月间12例人工髋关节无菌性松动患者应用长柄型假体翻修的临床资料.通过观察术前、术后髋关节Harris评分、视觉模拟评分法(VAS)评分变化,评估长柄型假体应用于人工髋关节无菌性松动翻修效果.结果 本组12例患者均获得术后随访,统计术后1周、3个月、1年Harris评分及VAS评分.与翻修手术前相比,Harris评分呈升高趋势,VAS评分呈下降趋势,评分差异有统计学意义(P<0.05).结论 长柄型假体可以成为髋关节假体无菌性松动翻修选择之一,能满足翻修手术要求,远期效果有待进一步观察.  相似文献   

20.
俞磊  张成欢  郭亭  丁浩  赵建宁 《中国骨伤》2016,29(2):109-113
目的 :评价全髋关节置换术治疗髋臼骨折后继发创伤性髋关节炎或股骨头坏死的中远期疗效。方法 :2000年1月至2005年12月,对33例髋臼骨折继发创伤性髋关节炎和(或)股骨头坏死患者实施全髋关节置换术。其中男21例,女12例;年龄27~69岁,平均52岁。23例骨折曾行切开复位内固定术,前侧入路5例,后侧入路12例,混合入路6例;10例行保守治疗。髋关节置换术均采用后外侧入路,术前髋臼骨折均已愈合,术中完全去除内固定5例,去除部分内固定3例,植骨20例。6例术中使用骨水泥假体,27例使用生物型假体。观察术中情况和术后并发症,比较术前Harris髋关节评分和术后10年评分,以假体松动、骨溶解或翻修为终点的生存分析显示假体10年生存率。结果:所有患者获随访,术后10年死亡1例,随访时间平均12年(10~15年),术后10年时Harris髋关节评分较术前升高。1例假体早期无菌性松动行翻修术,2例骨溶解形成合并假体无菌性松动并行翻修术治疗,单纯骨溶解无假体松动1例,术后深静脉血栓4例,假体脱位2例,切口感染和假体周围感染各1例。假体10年生存率为84.8%(28/133)。结论:全髋关节置换术治疗髋臼骨折后继发创伤性髋关节炎或股骨头坏死能明显改善患者的髋关节的功能,并有较高的假体生存率,具有良好的中远期疗效,是一种有效的治疗手段。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号