In total hip arthroplasty, judgment of the appropriateness of stem hammering is dependent on the experience and feelings of the surgeon and no objective evaluation method has been established. In this study, a frequen...In total hip arthroplasty, judgment of the appropriateness of stem hammering is dependent on the experience and feelings of the surgeon and no objective evaluation method has been established. In this study, a frequency analysis of the hammering sounds in total hip arthroplasty was performed to investigate objective judgment criteria capable of preventing problems during surgery. Stem hammering was applied following the surgeon’s feelings as usual in an operating room. A directional microphone was placed at a distance about 2 m from the surgical field and the peak frequency reaching the maximum amplitude was determined by Fourier analysis. It was clarified that the same peak frequency repeats when appropriate fixation is acquired during surgery, suggesting that intraoperative fracture and postoperative loosening can be prevented by stopping hammering at the time the peak frequency converged. Investigation of changes in the hammering sound frequency may serve as objective judgment criteria capable of preventing problems during surgery.展开更多
BACKGROUND Total hip replacement has become one of the most successful orthopaedic procedures.The length of the femoral stem constitutes one of the most important geometrical and mechanical features of the prosthesis....BACKGROUND Total hip replacement has become one of the most successful orthopaedic procedures.The length of the femoral stem constitutes one of the most important geometrical and mechanical features of the prosthesis.Several different implants are currently available but data are limited concerning the clinical results for some of these implants.AIM To report the short-term clinical and radiological results of a novel squared section,tapered design–with four conicity-short stem in total hip replacement.METHODS This is a retrospective study of a prospectively collected data using of MINIMA?short stem in 61 consecutive patients with at least 1 year follow-up.The collected data included patients’demographics,type of arthritis,bone morphology,perioperative data,clinical results using Harris Hip Score,EuroQol(EQ-5D),pain score and satisfaction rate,complications and radiological results.RESULTS Total 61 patients were included in our study with a mean age of 56 years of age(range 25-73 years).The majority of them(68.6%)were women,thirty seven patients(56.9%)were less than 60 years of age and almost half of patients(45.1%)suffered from secondary osteoarthritis(hip dysplasia,osteonecrosis,etc.).The mean time of follow-up examination was 33.4 mo(2.8 years)with a range of 12-57 months(1-4.8 years).In 35 patients(56.9%)the follow-up examination was more than 3 years.No major complications such as revision,periprosthetic fracture,dislocation or infection were presented.Re-admission 90 d postoperatively or laterwas deemed unnecessary for any reason regarding the operation.Respectively,the mean pain score,mean Harris hip score,and mean EQ-5D were improved from 6.3,58.7 and 77.3 preoperatively to 0.1,95.1,and 79.8 postoperatively.The Satisfaction rate at the final follow-up was 9.9(SD 0.3,range 8.0-10.0).All stems were classified as stable bone ingrowth and no radiolucent lineswere revealed in any of the modified Gruens’zone at the postoperative Xrays.Stem subsidence was within acceptable limits and the incidence of dista展开更多
目的:分析采用带股骨距假体髋关节置换术与同期行闭合复位防旋股骨近端髓内钉(proximal femoral nail antirotation,PFNA)内固定术治疗高龄患者(≥80岁)股骨转子间不稳定型骨折(EvansⅢ、Ⅳ型)的临床疗效。方法:回顾分析2016年6月至2018...目的:分析采用带股骨距假体髋关节置换术与同期行闭合复位防旋股骨近端髓内钉(proximal femoral nail antirotation,PFNA)内固定术治疗高龄患者(≥80岁)股骨转子间不稳定型骨折(EvansⅢ、Ⅳ型)的临床疗效。方法:回顾分析2016年6月至2018年3月采用假体置换与PFNA治疗的高龄股骨转子间不稳定型骨折患者60例,根据手术方式分为PFNA组与假体组,其中PFNA组男21例,女15例,年龄(84.3±2.9)岁;假体组男10例,女14例,年龄(82.9±2.4)岁。观察比较两组手术时间、术前与术后1 d血红蛋白差值、术后下地活动时间、住院时间及并发症发生情况,术后3、12个月行髋关节功能Harris评分。结果:患者均获得随访,时间12~24(19.3±4.8)个月,假体组1例1年后死于肺癌,随访终止。假体组手术时间长于PFNA组(P<0.05);术前后血红蛋白差值,假体组与PFNA组无差异(P>0.05);下地活动时间,假体组早于PFNA组(P<0.05);并发症出现数量,假体组少于PFNA组(P<0.05);治疗前假体组与PFNA组Harris评分差异无统计学意义,治疗后两组评分均较治疗前显著升高(P<0.05),术后3个月随访假体组评分高于髓内钉组(P<0.05),术后12个月差异无统计学意义(P>0.05)。结论:对高龄不稳定型股骨转子间骨折,尤其骨质疏松严重者,实施带股骨距假体髋关节置换术治疗是一种良好选择,有利于高龄患者术后功能锻炼和早期下地活动,减少并发症,提高生活质量,减轻家属及社会负担。展开更多
目的:探讨127°小颈干角和135°大颈干角假体行全髋关节置换术(total hip arthroplasty,THA)的疗效。方法:2014年1月至2016年6月行THA患者84例,男44例,女40例;年龄45~72(53.4±8.1)岁,股骨头坏死68例(左侧32例,右侧36例),...目的:探讨127°小颈干角和135°大颈干角假体行全髋关节置换术(total hip arthroplasty,THA)的疗效。方法:2014年1月至2016年6月行THA患者84例,男44例,女40例;年龄45~72(53.4±8.1)岁,股骨头坏死68例(左侧32例,右侧36例),其他原因导致严重髋关节骨性关节炎16例,病程9~36(24.0±5.5)个月。分别采用小颈干角(127°)和大颈干角(135°)假体,每组42例,术后两组患者进行髋关节Harris评分,疼痛视觉模拟评分(visual analogue scale,VAS)评分,双下肢长度测量,不同颈干角生物力学评估,比较术后并发症发生情况以及患者术后24个月生活质量。结果:两组患者各有2例患者失访,其余患者均获得随访,随访时间30~36(33.0±1.6)个月。术前及术后1、6、12、24个月进行Harris评分及双下肢长度测量,两组患者髋关节Harris评分及双下肢长度差与术前比较均得到明显改善(P<0.05),而组间差异无统计学意义(P>0.05)。两组术后1、6、12、24个月VAS评分均低于术前(P<0.05);两组VAS评分术前差异无统计学意义(P>0.05),但术后大颈干角组VAS评分明显低于小颈干角组(P<0.05)。两组术后并发症(包括假体松动、脱位)的发生率差异无统计学意义(P>0.05)。两组患者术后24个月生活质量较术前生活质量明显提高(P<0.05),且组间比较发现135°大颈干角组生活质量较127°小颈干角组生活质量更高(P<0.05)。结论:大、小颈干角假体的THA均能较好地恢复患者髋关节的功能,但是大颈干角更能降低术后疼痛程度,进而提高患者术后的生活质量。展开更多
文摘In total hip arthroplasty, judgment of the appropriateness of stem hammering is dependent on the experience and feelings of the surgeon and no objective evaluation method has been established. In this study, a frequency analysis of the hammering sounds in total hip arthroplasty was performed to investigate objective judgment criteria capable of preventing problems during surgery. Stem hammering was applied following the surgeon’s feelings as usual in an operating room. A directional microphone was placed at a distance about 2 m from the surgical field and the peak frequency reaching the maximum amplitude was determined by Fourier analysis. It was clarified that the same peak frequency repeats when appropriate fixation is acquired during surgery, suggesting that intraoperative fracture and postoperative loosening can be prevented by stopping hammering at the time the peak frequency converged. Investigation of changes in the hammering sound frequency may serve as objective judgment criteria capable of preventing problems during surgery.
文摘BACKGROUND Total hip replacement has become one of the most successful orthopaedic procedures.The length of the femoral stem constitutes one of the most important geometrical and mechanical features of the prosthesis.Several different implants are currently available but data are limited concerning the clinical results for some of these implants.AIM To report the short-term clinical and radiological results of a novel squared section,tapered design–with four conicity-short stem in total hip replacement.METHODS This is a retrospective study of a prospectively collected data using of MINIMA?short stem in 61 consecutive patients with at least 1 year follow-up.The collected data included patients’demographics,type of arthritis,bone morphology,perioperative data,clinical results using Harris Hip Score,EuroQol(EQ-5D),pain score and satisfaction rate,complications and radiological results.RESULTS Total 61 patients were included in our study with a mean age of 56 years of age(range 25-73 years).The majority of them(68.6%)were women,thirty seven patients(56.9%)were less than 60 years of age and almost half of patients(45.1%)suffered from secondary osteoarthritis(hip dysplasia,osteonecrosis,etc.).The mean time of follow-up examination was 33.4 mo(2.8 years)with a range of 12-57 months(1-4.8 years).In 35 patients(56.9%)the follow-up examination was more than 3 years.No major complications such as revision,periprosthetic fracture,dislocation or infection were presented.Re-admission 90 d postoperatively or laterwas deemed unnecessary for any reason regarding the operation.Respectively,the mean pain score,mean Harris hip score,and mean EQ-5D were improved from 6.3,58.7 and 77.3 preoperatively to 0.1,95.1,and 79.8 postoperatively.The Satisfaction rate at the final follow-up was 9.9(SD 0.3,range 8.0-10.0).All stems were classified as stable bone ingrowth and no radiolucent lineswere revealed in any of the modified Gruens’zone at the postoperative Xrays.Stem subsidence was within acceptable limits and the incidence of dista
文摘目的:分析采用带股骨距假体髋关节置换术与同期行闭合复位防旋股骨近端髓内钉(proximal femoral nail antirotation,PFNA)内固定术治疗高龄患者(≥80岁)股骨转子间不稳定型骨折(EvansⅢ、Ⅳ型)的临床疗效。方法:回顾分析2016年6月至2018年3月采用假体置换与PFNA治疗的高龄股骨转子间不稳定型骨折患者60例,根据手术方式分为PFNA组与假体组,其中PFNA组男21例,女15例,年龄(84.3±2.9)岁;假体组男10例,女14例,年龄(82.9±2.4)岁。观察比较两组手术时间、术前与术后1 d血红蛋白差值、术后下地活动时间、住院时间及并发症发生情况,术后3、12个月行髋关节功能Harris评分。结果:患者均获得随访,时间12~24(19.3±4.8)个月,假体组1例1年后死于肺癌,随访终止。假体组手术时间长于PFNA组(P<0.05);术前后血红蛋白差值,假体组与PFNA组无差异(P>0.05);下地活动时间,假体组早于PFNA组(P<0.05);并发症出现数量,假体组少于PFNA组(P<0.05);治疗前假体组与PFNA组Harris评分差异无统计学意义,治疗后两组评分均较治疗前显著升高(P<0.05),术后3个月随访假体组评分高于髓内钉组(P<0.05),术后12个月差异无统计学意义(P>0.05)。结论:对高龄不稳定型股骨转子间骨折,尤其骨质疏松严重者,实施带股骨距假体髋关节置换术治疗是一种良好选择,有利于高龄患者术后功能锻炼和早期下地活动,减少并发症,提高生活质量,减轻家属及社会负担。
文摘目的:探讨127°小颈干角和135°大颈干角假体行全髋关节置换术(total hip arthroplasty,THA)的疗效。方法:2014年1月至2016年6月行THA患者84例,男44例,女40例;年龄45~72(53.4±8.1)岁,股骨头坏死68例(左侧32例,右侧36例),其他原因导致严重髋关节骨性关节炎16例,病程9~36(24.0±5.5)个月。分别采用小颈干角(127°)和大颈干角(135°)假体,每组42例,术后两组患者进行髋关节Harris评分,疼痛视觉模拟评分(visual analogue scale,VAS)评分,双下肢长度测量,不同颈干角生物力学评估,比较术后并发症发生情况以及患者术后24个月生活质量。结果:两组患者各有2例患者失访,其余患者均获得随访,随访时间30~36(33.0±1.6)个月。术前及术后1、6、12、24个月进行Harris评分及双下肢长度测量,两组患者髋关节Harris评分及双下肢长度差与术前比较均得到明显改善(P<0.05),而组间差异无统计学意义(P>0.05)。两组术后1、6、12、24个月VAS评分均低于术前(P<0.05);两组VAS评分术前差异无统计学意义(P>0.05),但术后大颈干角组VAS评分明显低于小颈干角组(P<0.05)。两组术后并发症(包括假体松动、脱位)的发生率差异无统计学意义(P>0.05)。两组患者术后24个月生活质量较术前生活质量明显提高(P<0.05),且组间比较发现135°大颈干角组生活质量较127°小颈干角组生活质量更高(P<0.05)。结论:大、小颈干角假体的THA均能较好地恢复患者髋关节的功能,但是大颈干角更能降低术后疼痛程度,进而提高患者术后的生活质量。