AIM: To study a modified porous tantalum technique for the treatment of osteonecrosis of the femoral head.METHODS: The porous tantalum rod was combined with endoscopy,curettage,autologous bone grafting and use of bone...AIM: To study a modified porous tantalum technique for the treatment of osteonecrosis of the femoral head.METHODS: The porous tantalum rod was combined with endoscopy,curettage,autologous bone grafting and use of bone marrow aspirates from iliac crest aspiration in 49 patients(58 hips) with a mean age of 38 years.The majority of the patients had idiopathic osteonecrosis,followed by corticosteroid-induced osteonecrosis.Thirtyeight hips were of Steinberg stage Ⅱ disease and 20 hips were of stage Ⅲ disease.Patients were followed for 5 years and were evaluated clinically with the Merle D'Aubigne and Postel score and radiologically.The primary outcome of the study was survival based on the conversion to total hip arthroplasty(THA).Secondary outcomes included deterioration of the osteonecrosis to a higher disease stage at 5 years compared to the preoperative period and identification of factors that were associated with survival.The Kaplan-Meier survival analysis was performed to evaluate the survivorship ofthe prosthesis,and the Fisher exact test was performed to test associations between various parameters with survival.RESULTS: No patient developed any serious intraoperative or postoperative complication including implant loosening or migration and donor site morbidity.During the 5-year follow up,1 patient died,7 patients had disease progression and 4 hips were converted to THA.The 5-year survival based on conversion to THA was 93.1% and the respective rate based on disease progression was 87.9%.Stage Ⅱ disease was associated with statistically significant better survival rates compared to stage Ⅲ disease(P = 0.04).The comparison between idiopathic and non-idiopathic osteonecrosis and between steroid-induced and non-steroid-induced osteonecrosis did not showed any statistically significant difference in survival rates.The clinical evaluation revealed statistically significantly improved Merle d'Aubigne scores at 12 mo postoperatively compared to the preoperative period(P < 0.001).The mean preoperative Merle d'Aubigne score was 13.0(SD: 1.8).The respective score at 12 mo improved to 17.0(SD: 2.0).The 12-mo mean score was retained at 5 years.CONCLUSION: The modified porous tantalum rod technique presented here showed encouraging outcomes.The survival rates based on conversion to THA are the lowest reported in the published literature.展开更多
Background:The clinical outcome of transtrochanteric rotational osteotomy(TRO)for osteonecrosis of the femoral head(ONFH)remains controversial,and the promising clinical results of several Japanese studies could not b...Background:The clinical outcome of transtrochanteric rotational osteotomy(TRO)for osteonecrosis of the femoral head(ONFH)remains controversial,and the promising clinical results of several Japanese studies could not be reproduced in American and European studies.Trying to solve controversies on TRO for ONFH rising from apparently conflicting studies,a meta-analysis was conducted to assess the 5-and 10-year hip survival rates(with conversion to artificial joint replacement and radiographic failure as endpoints)after TRO.Methods:All eligible studies were searched in seven comprehensive databases including PubMed,Web of Science,Embase,Cochrane Library,VIP Database,China Knowledge Resource Integrated Database,and Wan Fang Database prior to June 2019.The outcomes evaluated were 5-and 10-year hip survival rates after TRO.The odds ratio and risk difference for the noncomparative binary data with the 95%confidence intervals(CIs)were calculated for each outcome.The included studies were assessed for methodologic bias and potential reasons for heterogeneity were explored.Results:Nineteen studies of TRO for ONFH were eligible for this meta-analysis according to inclusion criteria.Based on the previous report,two calculation methods(Methods 1 and 2)were adopted in this meta-analysis.Furthermore,we performed a subgroup analysis of the 5-and 10-year hip survival rates(Method 1)after TRO for ONFH:Asian sub-population and non-Asian subpopulation.Taking conversion to artificial joint replacement as the endpoint,5-and 10-year hip survival rates(Method 1)after TRO for ONFH in the Asian population were 0.86(95%CI=0.82–0.89)and 0.72(95%CI=0.65–0.78),respectively,and 5-and 10-year hip survival rates after TRO for ONFH in the non-Asian population were 0.55(95%CI=0.43–0.67)and 0.42(95%CI=0.28–0.55),respectively.The 5-and 10-year hip survival rates(Method 2)after TRO for ONFH were 0.90(95%CI=0.79–0.95)and 0.89(95%CI=0.81–0.94),respectively.Taking radiographic failure as the endpoint,5-and 10-year hip survival rates after TRO for ONFH were 0.70(95%CI=0.64–0.76)and 0.53(95%CI=0.46–0.61),respectively.Conclusions:The 5-and 10-year hip survival rates after TRO for ONFH were satisfactory in the Asian population,and were acceptable in the non-Asian population despite high early failure rates.展开更多
背景:有限元分析是一种广泛应用于工程技术领域的分析手段,但因其对复杂结构同样能做到高精度分析,在骨科领域的应用研究也逐年递增。近10年来,国内外利用有限元分析对股骨头坏死研究取得的成果数不胜数,但是尚缺乏对于当前研究现状和...背景:有限元分析是一种广泛应用于工程技术领域的分析手段,但因其对复杂结构同样能做到高精度分析,在骨科领域的应用研究也逐年递增。近10年来,国内外利用有限元分析对股骨头坏死研究取得的成果数不胜数,但是尚缺乏对于当前研究现状和热点趋势的分析。目的:对近年来有限元法应用于股骨头坏死领域的研究现状及热点进行可视化分析。方法:从中国知网(CNKI)及Web of Science数据库中筛选出2014-2023年发表与股骨头坏死有限元分析相关的文章,利用Citespace 6.1.R6可视化分析软件对相关文献的主要研究内容进行归纳,并绘制出年度发文量、作者图谱、共被引文献、热点关键词等科学知识图谱,进行总结概括。结果与结论:①根据相关关键词检索文献后导入Citespace软件,使用软件去重功能去除重复文章后,Web of Science核心合集相关文献385篇,CNKI数据库相关文献149篇;②其中关键词共现分析发现Web of Science数据库近10年间关键词频次排名为:finite element analysis(163次)、femoral head(83次)、arthroplasty(44次)、fixation(40次)、replacement(39次),中心性排名为:finite element method(0.21)、hip joint(0.21)、stability(0.19)、fixation(0.15)、contact pressure(0.15);③CNKI数据库近10年间关键词频次排名为:有限元分析(91次)、生物力学(45次)、股骨头坏死(42次)、股骨颈骨折(33次)、内固定(16次),中心性排名为:内固定(0.45)、3d打印(0.44)、健脾活骨方(0.43)、三维重建(0.42)、股骨头坏死(0.38);④近10年在股骨头坏死领域的研究中,国内外的发展均从“静态”发展为“动态”,整体进程基本上相似,对于步态模型及风险预测研究都较为深入;此外随着国内学者对于中药研究的深入,中医药手段治疗股骨头坏死疗效也得到了很好的验证;而在近10年内医学材料及计算机技术等领域将会成为国内外研究的热点;⑤尽管国内相关领域的研究较为迟缓,仍需更多临床研究验证,但随着国内科技技术的进步,相信国内学者会在未来将股骨头坏死有限元分析真正应用到临床,起到辅助患者个体化治疗、提升远期疗效的作用。展开更多
Objective: We constructed 3D-model of ONFH in computer according to three-dimensional computerized tomography (3D-CT) data. We determined the location and volume of necrosis to investigate its clinical efficacy. Metho...Objective: We constructed 3D-model of ONFH in computer according to three-dimensional computerized tomography (3D-CT) data. We determined the location and volume of necrosis to investigate its clinical efficacy. Method: Totally 92 hips (59 cases) with ONFH (44 males, 15 females) were included, with mean age of 37.5 years (range from 26 to 58). Totally 20 cases (35 hips) were induced by corticosteroid (CTSs), 31 (49 hips) induced by alcohol, 4 (4 hips) induced by trauma and 4 (4 hips) idiopathic. All the hips were categorized into stage ARCO II. Finally diagnosed by MRI, all hips were scanned by CT to acquire data in DICOM format. The images were imported into software to extract 3D-shape of femoral heads, necrotic foci, their volumes and distribution in each quadrant. Deviation of volumes between digital image and biopsy specimen was analyzed by SAS9.1 package. Correlativity between collapse and volume of necrosis under specific pathogeneses was also analyzed. Among the cases necessitating total hip arthroplasty (THA) due to advancing to ARCO III, we randomly selected 8 of them to perform 3D-CT scanning thrice prior to surgical operation. Total femoral heads harvested were torn asunder. Cubic capacity of femoral heads and necrotic foci were hereby measured and compared with those acquired from digital models. Result: Through the digital model, necrotic foci were found mainly locating within the super lateral portion of femoral head, coinciding with those observed in biopsy specimen. Average volumetric ratio of digitally acquired necrosis focus/femoral head in 58 collapsed hips was 36.8%. The ratio of the 34 hips without collapse was 17.3%. In collapsed femoral heads, the distribution of necrosis focus was 23.4% in quadrant 1 (q1), 23.6% in q2, 12.1% in q3, 14.4% in q4, 9.0% in q5, 11.8% in q6, 1.6% in q7 and 3.9% in q8. In femoral heads without collapse, the distribution was 34.2% in q1, 29.6% in q2, 11.8% in q3, 11.3% in q4, 6.0% in q5, 6.0% in q6, 0.5% in q7 and 0.4% in q8. As for the average cubic capacities of femoral heads and necrotic foci, those acquired from the digital model and biopsy specimen had no significant difference in matched-pairs test (t = -1.49, P = 0.179 for femoral heads and t = -1.52, P = 0.172 for necrotic foci). There was significant difference (F = 2.720, P = 0.035 P was respectively 0.0001 and 0.0005). Decision tree model showed that 94.6% (53/56) hips would progress into collapse if the volumetric ratio of necrotic tissue was over 23.48%. Otherwise, if distribution in q2 was over 45.13%, 83.3% (5/6) hips would progress into collapse. No collapse (0/30) would occur if the distribution of necrotic tissue in q2 was under 45.13%. Conclusion: Digital 3D-model reconstructed from CT scanning can precisely incarnate spatial orientation of necrotic foci in femoral head. Multinomial logistic regression and decision-making tree shows that volumetric ratio of necrotic tissues plays an important role in anticipating collapse of femoral head.展开更多
背景:股骨头坏死是骨科难治性疾病之一,不同分期、分型下的股骨头坏死自然塌陷病程影响着该病的进展及预后。目的:探究不同中日友好医院(China-Japan Friendship Hospital,CJFH)分型下国际骨循环研究协会(Association Research Circulat...背景:股骨头坏死是骨科难治性疾病之一,不同分期、分型下的股骨头坏死自然塌陷病程影响着该病的进展及预后。目的:探究不同中日友好医院(China-Japan Friendship Hospital,CJFH)分型下国际骨循环研究协会(Association Research Circulation Osseous,ARCO)Ⅱ期股骨头坏死未塌陷患者5年内自然塌陷病程,并分析不同CJFH分型的股骨头塌陷率及塌陷风险。方法:回顾性选取2016年10月至2017年10月在西安交通大学附属红会医院门诊确诊为ARCOⅡ期股骨头坏死未塌陷的患者为研究对象,根据是否塌陷将患髋分为塌陷组(n=82)和未塌陷组(n=70),统计不同CJFH分型的股骨头塌陷风险以及5年内塌陷时间、塌陷数量和塌陷率,并绘制不同CJFH分型股骨头的Kaplan-Meier生存曲线图。结果与结论:①共纳入患者97例,152髋,随访期间有82髋塌陷,总塌陷率为53.9%,其中M型、C型、L1型、L2型和L3型塌陷率分别为0.0%,36.7%,51.4%,72.2%和77.8%,各组间比较差异有显著性意义(P<0.05);②在塌陷风险方面,L1型塌陷风险为C型的1.704倍(P>0.05),而L2型、L3型塌陷风险分别为C型的3.866倍、6.423倍(P<0.05);③在Kaplan-Meier生存曲线方面,ARCOⅡ期患者股骨头中位生存时间为3年,95%置信区间为2.885-3.471年,第1,3,5年股骨头生存率分别为65.1%(99/152),50.7%(77/152),46.1%(70/152);④结果表明,不同CJFH分型影响着ARCOⅡ期股骨头坏死患者的塌陷率,其中L3型患者塌陷率最高,L2型和L1型患者次之,C型患者塌陷率较低,M型患者无塌陷,这表明股骨头外侧柱的保留对股骨头坏死自然塌陷病程有重要意义。展开更多
Developing the radiographic images from two to three-dimensional, finite element analysis(FEA) technology can set up the model, predicting diagnosis, treatment design, as well as surgical plan. FEA provides an accurat...Developing the radiographic images from two to three-dimensional, finite element analysis(FEA) technology can set up the model, predicting diagnosis, treatment design, as well as surgical plan. FEA provides an accurate three-dimensional finite element biomechanical study in osteonecrosis of femoral head(ONFH). The papers in the latest 5 years related to femoral head osteonecrosis and finite element analysis application are concentrated on. We summarize the latest research progress and problems, including the applied research carried out in the femoral head osteonecrosis clinical cases,innovational skills, so as to point out the direction of future research in FEA.展开更多
文摘AIM: To study a modified porous tantalum technique for the treatment of osteonecrosis of the femoral head.METHODS: The porous tantalum rod was combined with endoscopy,curettage,autologous bone grafting and use of bone marrow aspirates from iliac crest aspiration in 49 patients(58 hips) with a mean age of 38 years.The majority of the patients had idiopathic osteonecrosis,followed by corticosteroid-induced osteonecrosis.Thirtyeight hips were of Steinberg stage Ⅱ disease and 20 hips were of stage Ⅲ disease.Patients were followed for 5 years and were evaluated clinically with the Merle D'Aubigne and Postel score and radiologically.The primary outcome of the study was survival based on the conversion to total hip arthroplasty(THA).Secondary outcomes included deterioration of the osteonecrosis to a higher disease stage at 5 years compared to the preoperative period and identification of factors that were associated with survival.The Kaplan-Meier survival analysis was performed to evaluate the survivorship ofthe prosthesis,and the Fisher exact test was performed to test associations between various parameters with survival.RESULTS: No patient developed any serious intraoperative or postoperative complication including implant loosening or migration and donor site morbidity.During the 5-year follow up,1 patient died,7 patients had disease progression and 4 hips were converted to THA.The 5-year survival based on conversion to THA was 93.1% and the respective rate based on disease progression was 87.9%.Stage Ⅱ disease was associated with statistically significant better survival rates compared to stage Ⅲ disease(P = 0.04).The comparison between idiopathic and non-idiopathic osteonecrosis and between steroid-induced and non-steroid-induced osteonecrosis did not showed any statistically significant difference in survival rates.The clinical evaluation revealed statistically significantly improved Merle d'Aubigne scores at 12 mo postoperatively compared to the preoperative period(P < 0.001).The mean preoperative Merle d'Aubigne score was 13.0(SD: 1.8).The respective score at 12 mo improved to 17.0(SD: 2.0).The 12-mo mean score was retained at 5 years.CONCLUSION: The modified porous tantalum rod technique presented here showed encouraging outcomes.The survival rates based on conversion to THA are the lowest reported in the published literature.
基金This work was supported by grants from the National Natural Science Foundation of China(No.81802151)Shandong Province Natural Science Foundation(No.ZR2016HQ05,No.ZR2017BH089,and No.ZR2019MH012)+1 种基金China Postdoctoral Science Foundation(No.2018M642616)Qingdao Applied Foundational Research Youth Project(No.19-6-2-55-cg)。
文摘Background:The clinical outcome of transtrochanteric rotational osteotomy(TRO)for osteonecrosis of the femoral head(ONFH)remains controversial,and the promising clinical results of several Japanese studies could not be reproduced in American and European studies.Trying to solve controversies on TRO for ONFH rising from apparently conflicting studies,a meta-analysis was conducted to assess the 5-and 10-year hip survival rates(with conversion to artificial joint replacement and radiographic failure as endpoints)after TRO.Methods:All eligible studies were searched in seven comprehensive databases including PubMed,Web of Science,Embase,Cochrane Library,VIP Database,China Knowledge Resource Integrated Database,and Wan Fang Database prior to June 2019.The outcomes evaluated were 5-and 10-year hip survival rates after TRO.The odds ratio and risk difference for the noncomparative binary data with the 95%confidence intervals(CIs)were calculated for each outcome.The included studies were assessed for methodologic bias and potential reasons for heterogeneity were explored.Results:Nineteen studies of TRO for ONFH were eligible for this meta-analysis according to inclusion criteria.Based on the previous report,two calculation methods(Methods 1 and 2)were adopted in this meta-analysis.Furthermore,we performed a subgroup analysis of the 5-and 10-year hip survival rates(Method 1)after TRO for ONFH:Asian sub-population and non-Asian subpopulation.Taking conversion to artificial joint replacement as the endpoint,5-and 10-year hip survival rates(Method 1)after TRO for ONFH in the Asian population were 0.86(95%CI=0.82–0.89)and 0.72(95%CI=0.65–0.78),respectively,and 5-and 10-year hip survival rates after TRO for ONFH in the non-Asian population were 0.55(95%CI=0.43–0.67)and 0.42(95%CI=0.28–0.55),respectively.The 5-and 10-year hip survival rates(Method 2)after TRO for ONFH were 0.90(95%CI=0.79–0.95)and 0.89(95%CI=0.81–0.94),respectively.Taking radiographic failure as the endpoint,5-and 10-year hip survival rates after TRO for ONFH were 0.70(95%CI=0.64–0.76)and 0.53(95%CI=0.46–0.61),respectively.Conclusions:The 5-and 10-year hip survival rates after TRO for ONFH were satisfactory in the Asian population,and were acceptable in the non-Asian population despite high early failure rates.
文摘背景:有限元分析是一种广泛应用于工程技术领域的分析手段,但因其对复杂结构同样能做到高精度分析,在骨科领域的应用研究也逐年递增。近10年来,国内外利用有限元分析对股骨头坏死研究取得的成果数不胜数,但是尚缺乏对于当前研究现状和热点趋势的分析。目的:对近年来有限元法应用于股骨头坏死领域的研究现状及热点进行可视化分析。方法:从中国知网(CNKI)及Web of Science数据库中筛选出2014-2023年发表与股骨头坏死有限元分析相关的文章,利用Citespace 6.1.R6可视化分析软件对相关文献的主要研究内容进行归纳,并绘制出年度发文量、作者图谱、共被引文献、热点关键词等科学知识图谱,进行总结概括。结果与结论:①根据相关关键词检索文献后导入Citespace软件,使用软件去重功能去除重复文章后,Web of Science核心合集相关文献385篇,CNKI数据库相关文献149篇;②其中关键词共现分析发现Web of Science数据库近10年间关键词频次排名为:finite element analysis(163次)、femoral head(83次)、arthroplasty(44次)、fixation(40次)、replacement(39次),中心性排名为:finite element method(0.21)、hip joint(0.21)、stability(0.19)、fixation(0.15)、contact pressure(0.15);③CNKI数据库近10年间关键词频次排名为:有限元分析(91次)、生物力学(45次)、股骨头坏死(42次)、股骨颈骨折(33次)、内固定(16次),中心性排名为:内固定(0.45)、3d打印(0.44)、健脾活骨方(0.43)、三维重建(0.42)、股骨头坏死(0.38);④近10年在股骨头坏死领域的研究中,国内外的发展均从“静态”发展为“动态”,整体进程基本上相似,对于步态模型及风险预测研究都较为深入;此外随着国内学者对于中药研究的深入,中医药手段治疗股骨头坏死疗效也得到了很好的验证;而在近10年内医学材料及计算机技术等领域将会成为国内外研究的热点;⑤尽管国内相关领域的研究较为迟缓,仍需更多临床研究验证,但随着国内科技技术的进步,相信国内学者会在未来将股骨头坏死有限元分析真正应用到临床,起到辅助患者个体化治疗、提升远期疗效的作用。
文摘Objective: We constructed 3D-model of ONFH in computer according to three-dimensional computerized tomography (3D-CT) data. We determined the location and volume of necrosis to investigate its clinical efficacy. Method: Totally 92 hips (59 cases) with ONFH (44 males, 15 females) were included, with mean age of 37.5 years (range from 26 to 58). Totally 20 cases (35 hips) were induced by corticosteroid (CTSs), 31 (49 hips) induced by alcohol, 4 (4 hips) induced by trauma and 4 (4 hips) idiopathic. All the hips were categorized into stage ARCO II. Finally diagnosed by MRI, all hips were scanned by CT to acquire data in DICOM format. The images were imported into software to extract 3D-shape of femoral heads, necrotic foci, their volumes and distribution in each quadrant. Deviation of volumes between digital image and biopsy specimen was analyzed by SAS9.1 package. Correlativity between collapse and volume of necrosis under specific pathogeneses was also analyzed. Among the cases necessitating total hip arthroplasty (THA) due to advancing to ARCO III, we randomly selected 8 of them to perform 3D-CT scanning thrice prior to surgical operation. Total femoral heads harvested were torn asunder. Cubic capacity of femoral heads and necrotic foci were hereby measured and compared with those acquired from digital models. Result: Through the digital model, necrotic foci were found mainly locating within the super lateral portion of femoral head, coinciding with those observed in biopsy specimen. Average volumetric ratio of digitally acquired necrosis focus/femoral head in 58 collapsed hips was 36.8%. The ratio of the 34 hips without collapse was 17.3%. In collapsed femoral heads, the distribution of necrosis focus was 23.4% in quadrant 1 (q1), 23.6% in q2, 12.1% in q3, 14.4% in q4, 9.0% in q5, 11.8% in q6, 1.6% in q7 and 3.9% in q8. In femoral heads without collapse, the distribution was 34.2% in q1, 29.6% in q2, 11.8% in q3, 11.3% in q4, 6.0% in q5, 6.0% in q6, 0.5% in q7 and 0.4% in q8. As for the average cubic capacities of femoral heads and necrotic foci, those acquired from the digital model and biopsy specimen had no significant difference in matched-pairs test (t = -1.49, P = 0.179 for femoral heads and t = -1.52, P = 0.172 for necrotic foci). There was significant difference (F = 2.720, P = 0.035 P was respectively 0.0001 and 0.0005). Decision tree model showed that 94.6% (53/56) hips would progress into collapse if the volumetric ratio of necrotic tissue was over 23.48%. Otherwise, if distribution in q2 was over 45.13%, 83.3% (5/6) hips would progress into collapse. No collapse (0/30) would occur if the distribution of necrotic tissue in q2 was under 45.13%. Conclusion: Digital 3D-model reconstructed from CT scanning can precisely incarnate spatial orientation of necrotic foci in femoral head. Multinomial logistic regression and decision-making tree shows that volumetric ratio of necrotic tissues plays an important role in anticipating collapse of femoral head.
基金Natural Science Foundation of Guangdong Provincegrant number:2014A030310214+3 种基金Science and Technology Project of Guangdong Provincegrant number:2014A020221041the Medical Science and Technology Foundation of Guangdong Provincegrant number:A2015039
文摘Developing the radiographic images from two to three-dimensional, finite element analysis(FEA) technology can set up the model, predicting diagnosis, treatment design, as well as surgical plan. FEA provides an accurate three-dimensional finite element biomechanical study in osteonecrosis of femoral head(ONFH). The papers in the latest 5 years related to femoral head osteonecrosis and finite element analysis application are concentrated on. We summarize the latest research progress and problems, including the applied research carried out in the femoral head osteonecrosis clinical cases,innovational skills, so as to point out the direction of future research in FEA.