Background: Primary knee Osteoarthritis (OA) is the commonest articular disease in middle age and elderly people. Primary total knee replacement (TKR) is a known world-wide standard and definitive treatment of primary...Background: Primary knee Osteoarthritis (OA) is the commonest articular disease in middle age and elderly people. Primary total knee replacement (TKR) is a known world-wide standard and definitive treatment of primary knee OA following failed adequate non-operative management. It is of clinical importance to assess the clinical and functional outcome of TKR to prognosticate the severity of primary knee OA. The new (2011) knee society scoring system (nKSS) is both surgeons and patients’ assessment tool for the treatment outcome of TKR. Study Design: Prospective interventional analytical study. Aim and Objective: The aim of the study was to determine early clinical and functional outcome of primary total knee replacement in patients with primary knee osteoarthritis using nKSS. The objectives were: 1) To determine the pre-operative nKSS and post operative nKSS;2) To determine relationships between pre-operative nKSS and post operative nKSS at 6 weeks, 3, 6, 9 and 12 months;3) To determine the complication rates in patients undergoing primary TKR in the study centre. Methods: A prospective interventional study of 59 patients aged 51 to 70 years who had 67 Total Knee Replacements (TKRs) participated in the study between November 2015 to June 2018 at National Orthopaedics Hospital, Lagos, Nigeria. Patients’ sociodemographic data, pre-operative and post-operative nKSS system were recorded at 6 weeks, 3, 6, 9 and 12 months during follow up. The data were analyzed using Statistical Package for Social Science (SPSS). Results: There were 41 females and 18 males (M:F = 1:2.3). There were total of 67 TKRs with 31 right TKRs, 20 left TKRs and 8 staged bilateral TKRs. The participants’ age ranged from 51 to 70 years with the mean age of 59.5 (±8.5) years. Four patients did not complete the study due to various reasons. The remaining 55 participants completed the study period with progressive improvement of their post-operative nKSS at 6 weeks, 3, 6, 9 and 12 months post-operatively when compared with pre-operative nKSS (P value 0.5). Conclusion: This study revealed improved early clinical and functional outcome of primary total knee replacement in primary knee osteoarthritis using nKSS in all the studied patients. There is no significant negative effect of lower pre-operative nKSS (and its components) on the post-operative nKSS outcome.展开更多
This study aimed to examine the clinical and radiographic outcomes of primary total knee arthroplasy（TKA） with use of Nex Gen#174; Legacy#174; Constrained Condylar Knee（CCK） prosthesis for severe knee deformity. C...This study aimed to examine the clinical and radiographic outcomes of primary total knee arthroplasy（TKA） with use of Nex Gen#174; Legacy#174; Constrained Condylar Knee（CCK） prosthesis for severe knee deformity. Clinical data of 46 patients（48 knees in total, aged 61 years on average） with severe knee deformity who underwent TKA with Nex Gen#174; Legacy#174; CCK prosthesis between December 2007 and February 2012 were retrospectively analyzed. There were 34 knees with severe valgus with incompetent medial collateral ligament, 11 knees with severe flexion contracture with inability to achieve knee balancing in flexion and extension by posterior soft tissue release, 2 knees with Charcot arthritis with severe varus and bone loss, and 1 with traumatic osteoarthritis with severe varus and ligamentous instability. The mean duration of follow-up was 71 months（range 40–90 months）. The New Knee Society scoring（NKSS） system and the Hospital for Special Surgery（HSS） score were used to evaluate the functional and clinical outcomes. Visual Analogue Scale（VAS） was used for pain measurement and Knee Society criteria for evaluation of radiological images. The results showed that, in the total 48 knees, 1 case of loosening due to short-stem tibial component at 3 months post-operatively underwent revision. The 6-year prosthesis survival rate in this cohort was 97.9%. There was no component infection occurring within 6 years. Significant post-operative improvements were found in NKSS and HSS scores. Patient satisfaction was significantly increased. Pain score was decreased significantly. Total functional score was improved from 31.46±11.43 to 86.42±8.87, range of motion（ROM） from 42.42°±23.57° to 95.31°±23.45° and the flexion contracture from 5.31°±7.87° to 0.92°±1.80°. Preoperative radiographic study showed excessive valgus（≥7°） in 37 knees, and varus deformity in 3 knees. Post-operative femorotibial alignment was valgus 3.88°±1.76° in 48 knees. Antero/posterior（A/P） view of X-ray films showed 4 radiolucent lines（RLL） in 48 tibial components. It was concluded that TKA with CCK is effective for the treatment of the severe unstable knee that cannot be balanced by soft tissue.展开更多
BACKGROUND Most populations worldwide,who are used to squatting and sitting cross-legged for their activities of daily living,largely comprise the lower socioeconomic strata,thus making them candidates for exclusion f...BACKGROUND Most populations worldwide,who are used to squatting and sitting cross-legged for their activities of daily living,largely comprise the lower socioeconomic strata,thus making them candidates for exclusion for total knee arthroplasty.Proximal/high tibial osteotomy(HTO)is a preferred strategy for clinically symptomatic osteoarthritis(OA)with genu varum due to painful medial compartment OA which is not amenable to conservative measures.AIM To evaluate the outcomes of medial open-wedge HTO along with autologous bone grafting and buttress plate for the treatment of genu varum due to OA of the knee in a rural population of central India.METHODS A total of 65 knees in 56 patients with a mean age of 58.22±5.63 years with genu varum due to intractable painful knee OA were treated with medial open-wedge HTO along with autologous bone grafting and buttress plate osteosynthesis from June 2015 to May 2018.The mean preoperative radiological angle of genu varum was 13.4°.Clinical outcomes were assessed by the range of movement,knee scores,pain scores,and functional scores.Radiographic studies were performed preoperatively and at regular intervals during the follow-up period.RESULTS All patients reported pain relief immediately after the osteotomy and during the long-term analysis covering between one to three years.The genu varum angle was overcorrected to approximately four degrees in all patients.There was a loss of reduction by approximately three degrees in all patients at around six weeks postoperatively.Preoperative knee movements were restored in all patients.No major perioperative complications were noted during surgery and postoperative follow-up and the clinical scores were significantly improved during the final analysis which revealed good pain relief.CONCLUSION Medial open-wedge HTO is a reliable,safe,practical,physiological,and feasible treatment for populations who are used to increased activity in their occupation and lifestyle and is associated with excellent short-term and long-term results for OA in genu varum knees.展开更多
Introduction: There is only little information available about total knee arthroplasty (TKA) following distal femoral varus osteotomy (DFVO). The aim of our study was to show our experiences and mid-term results of TK...Introduction: There is only little information available about total knee arthroplasty (TKA) following distal femoral varus osteotomy (DFVO). The aim of our study was to show our experiences and mid-term results of TKA after a previous DFVO. Material and method: In a retrospective study we identified 36 consecutive patients who had undergone TKA after a previous distal femoral varus osteotomy. The average duration of follow-up after the TKA was 8.2 years (min: 5.0, max: 9.2). X-rays were taken in 2 planes before TKA, 1 week after TKA and at latest follow-up. Tibiofemoral alignment was measured on weightbearing long-leg anteroposterior radiographs. Ra- diolucent lines at latest follow-up were documented. Functional evaluations were performed preoperatively and postoperatively (at the time of latest follow-up). Results: The mean Knee Society knee score in- creased from 42 points before the arthroplasty to 91.3 points after the arthroplasty. The mean Knee Society function score increased from 27.4 points preoperatively to 93.2 points postoperatively. The mean overall Knee Society score increased from 91.3 points preoperatively to 163.4 points postoperatively. The mean radiographic alignment was 4.5? of valgus (10? of varus to 19? of valgus) before TKA and 3.1? of valgus (range, 3? of varus to 6? of valgus) at the time of latest follow-up. Postoperative complications included one deep vein thrombosis with non-lethal pulmonary embolism, one wound infection requiring revision and one septic loosening. Discussion: It is possible to perform TKA following DFVO with good mid-term results. In comparison to the literature there is no higher risk of complications in TKA following DFVO in comparison to primary TKA.展开更多
目的研究髌骨置换对全膝关节置换术疗效的影响。方法 2010年9月至2010年11月在宁夏医科大学总医院骨科行全膝关节置换术的膝关节骨性关节炎的患者,共69例,随机分为两组即髌骨置换组和非置换组,置换组35例,非置换组34例。术后随访6周、3...目的研究髌骨置换对全膝关节置换术疗效的影响。方法 2010年9月至2010年11月在宁夏医科大学总医院骨科行全膝关节置换术的膝关节骨性关节炎的患者,共69例,随机分为两组即髌骨置换组和非置换组,置换组35例,非置换组34例。术后随访6周、3个月、6个月、12个月,比较两组之间在knee score评分、knee function score评分、髌骨评分、术后膝前痛发生率、影像学表现是否有统计学差异。结果两组在术后随访时knee score评分之间无明显统计学差异。两组在术后随访6个月、12个月knee function score评分有明显统计学差异,P<0.05。在12个月髌骨评分置换组高于非置换组,P<0.05。置换组较非置换组术后膝前痛发生率明显降低,P<0.05。置换组与非置换组术后平均股胫角、髌韧带比值、髌骨倾斜角无明显差异,P>0.05。结论全膝关节置换术行髌骨置换可以改善knee function score评分、髌骨评分及降低术后膝前痛的发生率。展开更多
为评价在加速康复理念下初次全膝关节置换术中应用倒刺线缝合关节囊较可吸收线的优势,回顾性分析2018年7月至2019年7月邯郸市中心医院骨五科行初次全膝关节置换术的85例患者,其中倒刺线组41例、可吸收线组44例,比较两组在切口缝合时间...为评价在加速康复理念下初次全膝关节置换术中应用倒刺线缝合关节囊较可吸收线的优势,回顾性分析2018年7月至2019年7月邯郸市中心医院骨五科行初次全膝关节置换术的85例患者,其中倒刺线组41例、可吸收线组44例,比较两组在切口缝合时间、切口并发症、术后关节功能方面的差异。结果表明:倒刺线组关节囊缝合时间、总缝合时间与可吸收线组相比显著缩短,差异有统计学意义(P=0.003、P=0.035);倒刺线组皮下缝合时间、皮肤缝合时间与可吸收线组相比,差异无统计学意义(P=0.100、P=0.740);倒刺线组切口皮下血肿率低于可吸收线组,倒刺线组切口并发症发生率低于可吸收线组,差异无统计学意义(P=1.0);倒刺线组术后膝关节活动度与可吸收线组相比,差异无统计学意义(P=0.961);术后3月和末次随访两组KSS(Knee Society score)(膝关节协会评分)临床评分及功能评分均较术前明显改善,差异有统计学意义(P<0.05),两组组间及组内比较差异无统计学意义(P>0.05)。倒刺线缝合关节囊手术时间短,切口并发症少,术后关节功能良好,有利于加速康复,推荐使用。展开更多
目的用普通膝关节假体行TKA后,膝关节安全活动曲度约为100°-110°,如要完成包括下跪、下蹲等高度屈曲动作,必须选用高屈曲度设计假体。本文研究观察为膝关节高度屈曲而设计的Nex Gen LPS高屈曲型人工全膝关节假体置换术后中远...目的用普通膝关节假体行TKA后,膝关节安全活动曲度约为100°-110°,如要完成包括下跪、下蹲等高度屈曲动作,必须选用高屈曲度设计假体。本文研究观察为膝关节高度屈曲而设计的Nex Gen LPS高屈曲型人工全膝关节假体置换术后中远期效果。方法回顾性分析我院106例（120膝）接受Nex Gen LPS高屈曲型人工全膝关节假体置换术后8-11年的患者的相关数据,包括术前、术后测量的膝关节屈曲度,及根据KSS膝关节评分系统进行评分。结果获随访106例（120膝）,平均随访时间（123.5±3.2）个月（96-134个月）,KSS术前膝评分平均为（46.3±15.6）分、功能评分平均为（49.5±18.6）分,术后末次随访膝评分平均为（92.7±6.1）分、功能评分平均为（81.6±17.8）分,术前膝屈曲度为〈90°、90°-100°、〉100°的三组患者术后屈曲度平均增加（37.6°±7.2°）,（25.8°±1.9°）和（6.9°±2.1°）,1例出现假体无菌性松动,1例发生感染。结论 Nex Gen LPS高屈曲型人工膝关节假体通过设计上的改进使理论上能达到高度屈曲,但膝关节假体置换后的屈曲度受术前屈曲度等多因素影响,术前活动度较差的患者术后获益更大,并且假体松动、感染等并发症发生率较低,术后总体中远期临床效果满意。展开更多
文摘Background: Primary knee Osteoarthritis (OA) is the commonest articular disease in middle age and elderly people. Primary total knee replacement (TKR) is a known world-wide standard and definitive treatment of primary knee OA following failed adequate non-operative management. It is of clinical importance to assess the clinical and functional outcome of TKR to prognosticate the severity of primary knee OA. The new (2011) knee society scoring system (nKSS) is both surgeons and patients’ assessment tool for the treatment outcome of TKR. Study Design: Prospective interventional analytical study. Aim and Objective: The aim of the study was to determine early clinical and functional outcome of primary total knee replacement in patients with primary knee osteoarthritis using nKSS. The objectives were: 1) To determine the pre-operative nKSS and post operative nKSS;2) To determine relationships between pre-operative nKSS and post operative nKSS at 6 weeks, 3, 6, 9 and 12 months;3) To determine the complication rates in patients undergoing primary TKR in the study centre. Methods: A prospective interventional study of 59 patients aged 51 to 70 years who had 67 Total Knee Replacements (TKRs) participated in the study between November 2015 to June 2018 at National Orthopaedics Hospital, Lagos, Nigeria. Patients’ sociodemographic data, pre-operative and post-operative nKSS system were recorded at 6 weeks, 3, 6, 9 and 12 months during follow up. The data were analyzed using Statistical Package for Social Science (SPSS). Results: There were 41 females and 18 males (M:F = 1:2.3). There were total of 67 TKRs with 31 right TKRs, 20 left TKRs and 8 staged bilateral TKRs. The participants’ age ranged from 51 to 70 years with the mean age of 59.5 (±8.5) years. Four patients did not complete the study due to various reasons. The remaining 55 participants completed the study period with progressive improvement of their post-operative nKSS at 6 weeks, 3, 6, 9 and 12 months post-operatively when compared with pre-operative nKSS (P value 0.5). Conclusion: This study revealed improved early clinical and functional outcome of primary total knee replacement in primary knee osteoarthritis using nKSS in all the studied patients. There is no significant negative effect of lower pre-operative nKSS (and its components) on the post-operative nKSS outcome.
基金supported by a grant from the National Nature Science Foundation of China(No.81371973)
文摘This study aimed to examine the clinical and radiographic outcomes of primary total knee arthroplasy（TKA） with use of Nex Gen#174; Legacy#174; Constrained Condylar Knee（CCK） prosthesis for severe knee deformity. Clinical data of 46 patients（48 knees in total, aged 61 years on average） with severe knee deformity who underwent TKA with Nex Gen#174; Legacy#174; CCK prosthesis between December 2007 and February 2012 were retrospectively analyzed. There were 34 knees with severe valgus with incompetent medial collateral ligament, 11 knees with severe flexion contracture with inability to achieve knee balancing in flexion and extension by posterior soft tissue release, 2 knees with Charcot arthritis with severe varus and bone loss, and 1 with traumatic osteoarthritis with severe varus and ligamentous instability. The mean duration of follow-up was 71 months（range 40–90 months）. The New Knee Society scoring（NKSS） system and the Hospital for Special Surgery（HSS） score were used to evaluate the functional and clinical outcomes. Visual Analogue Scale（VAS） was used for pain measurement and Knee Society criteria for evaluation of radiological images. The results showed that, in the total 48 knees, 1 case of loosening due to short-stem tibial component at 3 months post-operatively underwent revision. The 6-year prosthesis survival rate in this cohort was 97.9%. There was no component infection occurring within 6 years. Significant post-operative improvements were found in NKSS and HSS scores. Patient satisfaction was significantly increased. Pain score was decreased significantly. Total functional score was improved from 31.46±11.43 to 86.42±8.87, range of motion（ROM） from 42.42°±23.57° to 95.31°±23.45° and the flexion contracture from 5.31°±7.87° to 0.92°±1.80°. Preoperative radiographic study showed excessive valgus（≥7°） in 37 knees, and varus deformity in 3 knees. Post-operative femorotibial alignment was valgus 3.88°±1.76° in 48 knees. Antero/posterior（A/P） view of X-ray films showed 4 radiolucent lines（RLL） in 48 tibial components. It was concluded that TKA with CCK is effective for the treatment of the severe unstable knee that cannot be balanced by soft tissue.
文摘BACKGROUND Most populations worldwide,who are used to squatting and sitting cross-legged for their activities of daily living,largely comprise the lower socioeconomic strata,thus making them candidates for exclusion for total knee arthroplasty.Proximal/high tibial osteotomy(HTO)is a preferred strategy for clinically symptomatic osteoarthritis(OA)with genu varum due to painful medial compartment OA which is not amenable to conservative measures.AIM To evaluate the outcomes of medial open-wedge HTO along with autologous bone grafting and buttress plate for the treatment of genu varum due to OA of the knee in a rural population of central India.METHODS A total of 65 knees in 56 patients with a mean age of 58.22±5.63 years with genu varum due to intractable painful knee OA were treated with medial open-wedge HTO along with autologous bone grafting and buttress plate osteosynthesis from June 2015 to May 2018.The mean preoperative radiological angle of genu varum was 13.4°.Clinical outcomes were assessed by the range of movement,knee scores,pain scores,and functional scores.Radiographic studies were performed preoperatively and at regular intervals during the follow-up period.RESULTS All patients reported pain relief immediately after the osteotomy and during the long-term analysis covering between one to three years.The genu varum angle was overcorrected to approximately four degrees in all patients.There was a loss of reduction by approximately three degrees in all patients at around six weeks postoperatively.Preoperative knee movements were restored in all patients.No major perioperative complications were noted during surgery and postoperative follow-up and the clinical scores were significantly improved during the final analysis which revealed good pain relief.CONCLUSION Medial open-wedge HTO is a reliable,safe,practical,physiological,and feasible treatment for populations who are used to increased activity in their occupation and lifestyle and is associated with excellent short-term and long-term results for OA in genu varum knees.
文摘Introduction: There is only little information available about total knee arthroplasty (TKA) following distal femoral varus osteotomy (DFVO). The aim of our study was to show our experiences and mid-term results of TKA after a previous DFVO. Material and method: In a retrospective study we identified 36 consecutive patients who had undergone TKA after a previous distal femoral varus osteotomy. The average duration of follow-up after the TKA was 8.2 years (min: 5.0, max: 9.2). X-rays were taken in 2 planes before TKA, 1 week after TKA and at latest follow-up. Tibiofemoral alignment was measured on weightbearing long-leg anteroposterior radiographs. Ra- diolucent lines at latest follow-up were documented. Functional evaluations were performed preoperatively and postoperatively (at the time of latest follow-up). Results: The mean Knee Society knee score in- creased from 42 points before the arthroplasty to 91.3 points after the arthroplasty. The mean Knee Society function score increased from 27.4 points preoperatively to 93.2 points postoperatively. The mean overall Knee Society score increased from 91.3 points preoperatively to 163.4 points postoperatively. The mean radiographic alignment was 4.5? of valgus (10? of varus to 19? of valgus) before TKA and 3.1? of valgus (range, 3? of varus to 6? of valgus) at the time of latest follow-up. Postoperative complications included one deep vein thrombosis with non-lethal pulmonary embolism, one wound infection requiring revision and one septic loosening. Discussion: It is possible to perform TKA following DFVO with good mid-term results. In comparison to the literature there is no higher risk of complications in TKA following DFVO in comparison to primary TKA.
文摘目的研究髌骨置换对全膝关节置换术疗效的影响。方法 2010年9月至2010年11月在宁夏医科大学总医院骨科行全膝关节置换术的膝关节骨性关节炎的患者,共69例,随机分为两组即髌骨置换组和非置换组,置换组35例,非置换组34例。术后随访6周、3个月、6个月、12个月,比较两组之间在knee score评分、knee function score评分、髌骨评分、术后膝前痛发生率、影像学表现是否有统计学差异。结果两组在术后随访时knee score评分之间无明显统计学差异。两组在术后随访6个月、12个月knee function score评分有明显统计学差异,P<0.05。在12个月髌骨评分置换组高于非置换组,P<0.05。置换组较非置换组术后膝前痛发生率明显降低,P<0.05。置换组与非置换组术后平均股胫角、髌韧带比值、髌骨倾斜角无明显差异,P>0.05。结论全膝关节置换术行髌骨置换可以改善knee function score评分、髌骨评分及降低术后膝前痛的发生率。
文摘为评价在加速康复理念下初次全膝关节置换术中应用倒刺线缝合关节囊较可吸收线的优势,回顾性分析2018年7月至2019年7月邯郸市中心医院骨五科行初次全膝关节置换术的85例患者,其中倒刺线组41例、可吸收线组44例,比较两组在切口缝合时间、切口并发症、术后关节功能方面的差异。结果表明:倒刺线组关节囊缝合时间、总缝合时间与可吸收线组相比显著缩短,差异有统计学意义(P=0.003、P=0.035);倒刺线组皮下缝合时间、皮肤缝合时间与可吸收线组相比,差异无统计学意义(P=0.100、P=0.740);倒刺线组切口皮下血肿率低于可吸收线组,倒刺线组切口并发症发生率低于可吸收线组,差异无统计学意义(P=1.0);倒刺线组术后膝关节活动度与可吸收线组相比,差异无统计学意义(P=0.961);术后3月和末次随访两组KSS(Knee Society score)(膝关节协会评分)临床评分及功能评分均较术前明显改善,差异有统计学意义(P<0.05),两组组间及组内比较差异无统计学意义(P>0.05)。倒刺线缝合关节囊手术时间短,切口并发症少,术后关节功能良好,有利于加速康复,推荐使用。
文摘目的用普通膝关节假体行TKA后,膝关节安全活动曲度约为100°-110°,如要完成包括下跪、下蹲等高度屈曲动作,必须选用高屈曲度设计假体。本文研究观察为膝关节高度屈曲而设计的Nex Gen LPS高屈曲型人工全膝关节假体置换术后中远期效果。方法回顾性分析我院106例（120膝）接受Nex Gen LPS高屈曲型人工全膝关节假体置换术后8-11年的患者的相关数据,包括术前、术后测量的膝关节屈曲度,及根据KSS膝关节评分系统进行评分。结果获随访106例（120膝）,平均随访时间（123.5±3.2）个月（96-134个月）,KSS术前膝评分平均为（46.3±15.6）分、功能评分平均为（49.5±18.6）分,术后末次随访膝评分平均为（92.7±6.1）分、功能评分平均为（81.6±17.8）分,术前膝屈曲度为〈90°、90°-100°、〉100°的三组患者术后屈曲度平均增加（37.6°±7.2°）,（25.8°±1.9°）和（6.9°±2.1°）,1例出现假体无菌性松动,1例发生感染。结论 Nex Gen LPS高屈曲型人工膝关节假体通过设计上的改进使理论上能达到高度屈曲,但膝关节假体置换后的屈曲度受术前屈曲度等多因素影响,术前活动度较差的患者术后获益更大,并且假体松动、感染等并发症发生率较低,术后总体中远期临床效果满意。
