Cementless Semi-Constrained Rotating Platform Total Knee Replacement: A Concise Follow-Up of a Previous Report at a Minimum of Twenty Years

Background: A previous report evaluated the initial 310 cementless, Buechel-Pappas (B-P), Semi-Constrained Rotating Platform total knee replacements in 257 patients followed for an average of 7.6 years, range 2 - 18 years. Diagnoses were osteoarthritis in 233 patients, post traumatic arthritis in 4 patients and rheumatoid arthritis in 22 patients. Knee Scores, using a strict knee scoring scale were 86.4% excellent, 12.3% good, 0.3% fair and 1.0% poor results. Survivorship, using an end point of revision for any mechanical reason (including component loosening, bearing wear and bearing dislocation) was 99.4%. Survivorship for a poor knee score (including persistent pain, loosening, instability and infection was 97.6%. The purpose of the present study is to report the updated results of this same patient cohort at a minimum follow-up of twenty years. Methods: The average age of patients at the time of surgery was 67 years, range 34 to 91 years. A total of 20 patients (22 knees) were still living, with a follow-up of 20 - 30 years (mean 23.47 years). The same strict knee scoring scale and survivorship analysis were used to evaluate patient outcomes at the 20 to 30 years interval. Results: Survivorship, in the current study, using the same end points as in the previous study, was 96.5% at the 20 and 30-year intervals. Late mechanical failure and osteolysis were not identified. Conclusion: This cementless, semi-constrained rotating platform total knee replacement has stood the test of time for more than 20 years and can be considered acceptable for long-term use, in properly selected patients.

Total hip replacement:A meta-analysis to evaluate survival of cemented,cementless and hybrid implants

AIM To determine whether cemented, cementless, or hybrid implant was superior to the other in terms of survival rate.METHODS Systematic searches across MEDLINE, CINAHL, and Cochrane that compared cemented, cementless and hybrid total hip replacement(THR) were performed. Two independent reviewers evaluated the risk ratios of revision due to any cause, aseptic loosening, infection, and dislocation rate of each implants with a pre-determined form. The risk ratios were pooled separately for clinical trials, cohorts and registers before pooled altogether using fixed-effect model. Meta-regressions were performed to identify the source of heterogeneity. Funnel plots were analyzed. RESULTS Twenty-seven studies comprising 5 clinical trials, 9 cohorts, and 13 registers fulfilled the research criteria and analyzed. Compared to cementless THR, cemented THR have pooled RR of 0.47(95%CI: 0.45-0.48), 0.9(0.84-0.95), 1.29(1.06-1.57) and 0.69(0.6-0.79) for revision due to any reason, revision due to aseptic loosening, revision due to infection, and dislocation respectively. Compared to hybrid THR, the pooled RRs of cemented THR were 0.82(0.76-0.89), 2.65(1.14-6.17), 0.98(0.7-1.38), and 0.67(0.57-0.79) respectively. Compared to hybrid THR, cementless THR had RRs of 0.7(0.65-0.75), 0.85(0.49-1.5), 1.47(0.93-2.34) and 1.13(0.98-1.3).CONCLUSION Despite the limitations in this study, there was some tendency that cemented fixation was still superior than other types of fixation in terms of implant survival.

Effect of proximal femoral osteoporosis on cementless hip arthroplasty: A short-term clinical analysis

Objective： The aim of this retrospective investigation was to explore the influence of femoral osteoporosis on short-term curative effects ofcementless hip arthroplasty and to evaluate the femoral metaphyseal bone mineral density （BMD） for femoral osteoporosis in order to guide prosthesis choice and rehabilitation. Methods： We performed 127 total arthroplasty operations between June 1999 to February 2003 and investigated 49 cementless hip replacements with the Metalcancellous cementless Lubeck Ⅱ system being used in all hips. There were twenty men and twenty-nine women whose mean age at the time of the operation was 60 years （range, 52-81 years）. The patients were divided into osteoporosis or normal groups according to the femoral metaphyseal BMD measured preoperatively. The average duration of follow-up was 30 months （range, 8-52 months）. We evaluated all of the patients from a clinical standpoint with use of a standard-terminology questionnaire with respect to the short-term curative effects and patients＇ satisfaction. Hip pain status and functional ability were important indicators of treatment efficacy. Results： Harris hip score and patients＇ satisfaction in femoral osteoporosis patients who underwent noncemented hip arthroplasty were lower （P=0.004, P=0.03） while the incidence of thigh pain was higher （P=0.03） than the patients with non-osteoporosis. Conclusion： The higher incidence of pain, as well as the decrease in function experienced by the patients in osteoporosis group, supports the case that cementless arthroplasty is not a better choice for those patients and that we had better select prosthesis based on the femoral metaphyseal BMD.

Promising short-term clinical results of the cementless Oxford phase Ⅲ medial unicondylar knee prosthesis

AIM: To investigate the short-term clinical results of the Oxford phase III cementless medial unicondylar knee prosthesis(UKP) compared to the cemented medial UKP.METHODS: We conducted a cross-sectional study in a tertairy orthopedic centre between the period of May 2010 and September 2012. We included 99 medial UKP in 97 patients and of these UKP, 53 were cemented and 46 were cementless. Clinical outcome was measured using a questionnaire, containing a visual analogue scale(VAS) for pain, Oxford Knee score, Kujala score and SF-12 score. Knee function was tested using the American Knee Society score. Complications, reoperations and revisions were recorded. Statistical significance was defined as a P value < 0.05.RESULTS: In a mean follow-up time of 19.5 mo, three cemented medial UKP were revised to a total knee prosthesis. Reasons for revision were malrotation of the tibial component, aseptic loosening of the tibial component and progression of osteoarthritis in the lateral- and patellofemoral compartment. In five patients a successful reoperation was performed, because of impingement or(sub)luxation of the polyethylene bearing. Patients with a reoperation were significant younger than patients in the primary group(56.7 vs 64.0, P = 0.01) and were more likely to be male(85.7% vs 38.8%, P = 0.015). Overall the cementless medial UKP seems to perform better, but the differences in clinical outcome are not significant; a VAS pain score of 7.4 vs 11.7(P = 0.22), an Oxford Knee score of 43.3 vs 41.7(P = 0.27) and a Kujala score of 79.6 vs 78.0(P = 0.63). The American Knee Society scores were slightly better in the cementless group with 94.5 vs 90.2(P = 0.055) for the objective score and 91.2 vs 87.8(P = 0.25) for the subjective score.CONCLUSION: The cementless Oxford phase III medial UKP shows good short-term clinical results, when used in a specialist clinic by an experienced surgeon.

Factors Influence on the Broaching Hammering Sound during Cementless Total Hip Arthroplasty

Background: The aim of this study is to identify the factors influence on the broaching hammering sound character during cementless total hip arthroplasty. Methods: We analyzed frequency spectrum of the hammering sound for 49 cases of uncomplicated cementless THAs using two types of proximal-coated stem performed by experienced surgeons. Normalized sound pressure (NSP) of each 0.5 kHz frequency band in final stage of broach procedure was determined by the fast Fourier transform analysis. The relationships between those sound characteristics and femoral morphology such as canal calcar ratio (CCR), Canal flare index (CFI), morphological cortical index (MCI) and femoral shaft length (FSL) in different cementless stem were investigated. Results: In Accolade 2, CCR was positively related to NSP in several bands [Frequency band (kHz);r: 2.0 - 2.5;0.37, 4.5 - 5.0;0.37, 9.5 - 10.0;0.44], and negatively related to 7.5 - 8.0 kHz (r = -0.39). Negative correlations were observed among CFI and MCI in specific frequency bands (4.5 - 5.0, 5.0 - 5.5, and 7.5 - 8.0 kHz). In Taperloc Microplasty, strong correlations were found between FSL and the NSP of 7.5. - 8.0 kHz (r = 0.78) and CCR and the 7.5 - 8.0 kHz bands. There was significant difference of NSPs between high and low group divided by morphological parameters. Acoustic characteristics of NSPs between Accolade 2 and Microplasty were significantly different in 9 frequency bands. Conclusions: The hammering sound correlated with four parameters of the femoral morphology and differed in different types of proximal-coated stem. Those novel five factors are important to consider when to predict complications using acoustic analysis.

Leg Length Discrepancy in Cementless Total Hip Arthroplasty

The use of cementless total hip arthroplasty (THA) is on the increase. In order to achieve rotational and axial stability larger implants may be required than originally templated for. This could potentially result in a lar-ger leg length inequality. Our objective was to determine whether there is greater inequality in leg length post-operatively in cementless THA as compared to cemented implants. 136 consecutive patients undergoing elective THA between June 2007 and May 2008 were included. Post-operative digital radiographs were ex-amined to determine leg length. Twenty seven patients (20%) underwent a cemented procedure and 109 (80%) a cementless procedure. In the cemented group the mean leg length discrepancy was 7.3 mm (range 19 mm short to 21 mm long). In the cementless group the mean measured leg length discrepancy was 6.3 mm (range 18 mm short to 23 mm long). There was no significant difference between the two groups (P = 0.443). This study shows that with accurate pre-operative templating, both cemented and cementless proce-dures produce comparable and acceptable leg length discrepancies.

A Probabilistic Approach for Studying the Reliability of Cementless Hip Prostheses in the Presence of Mechanical Uncertainties

This paper presents a probabilistic approach for studying the reliability of cementless hip prostheses in the presence of mechanical uncertainties and its application to the investigation of the influence of bone-implant interface properties. The non-linear deterministic model of the bone-implant coupled system and its finite element implementation are described, and the proposed reliability analysis is exposed. It is demonstrated that the distribution (uniform, truncated Gaussian and truncated lognormal distribution) of the two chosen parameters and the truncation lengths have a minor influence on the Hasofer-Lind index. This index logically increases as the failure threshold increases. FORM and SORM approximations are compared with the results obtained using a crude Monte-Carlo method for the estimation of failure probability. The performance of three Monte-Carlo methods is studied in terms of the necessary number of FE calculations. The method based on the Directional Simulation (DS) technique is efficient and less time-consuming. The validity and operational capacity of the proposed approach would not be compromised by an increase in the number of uncertain parameters.

CEMENTLESS TOTAL HIP ARTHROPLASTY IN PATIENTS OLDER THAN 70 YEARS

Objective To present 3-15 years follow-up of patients older than 70 years who underwent cementless total hip arthroplasty. Methods One hundred and two consecutive primary total hip arthroplasties utilizing a circumferential proximal porous coated femoral component and smooth surfaced threaded acetabular were performed in 92 patients. The patients were followed up clinically and radiographically every two years from their third year after surgery. Ten patients (10 hips) died and 14 patients (15 hips) were lost to follow up in three years after surgery. Sixty-seven patients (77 hips) were included in this study. Results The pre-operative Harris hip scores and pain scores were 45 and 15 points. They increased to 89 and 42 points by the third year. These scores decreased to 81 and 42 points in the ninth year and 77 and 37 points in the fifteenth year, respectively. More than 75% of the hips demonstrated good or excellent clinical results in the fifth year and 60% of the hips were rated good to excellent in the seventh to eleventh year. In the fifteenth year, only 50% of the hips had good or excellent results. All femoral components showed stable fixation by bone in-growth. Eight acetabular components were revised, with 5 due to mechanical loosening and 3 for recurrent instability. Thigh pain was documented in 4 hips. ConclusionThe smooth-surfaced threaded acetabular component has a high rate of failure. Circumferential proximal porous coated femoral components provided excellent radiographic results and acceptable clinical outcome with definite bone ingrowth. Patients older than 70 may be suitable candidates for cementless total hip arthroplasty.

初次人工全髋关节置换术不同固定方式对假体生存的影响

目的探讨初次人工全髋关节置换术不同固定方式对假体生存的影响。方法收集2000-04至2013-11武警陕西总队医院骨科初次人工全髋关节置换术且需要翻修病例146例,根据固定方式分为骨水泥固定组(61例),非骨水泥固定组(85例),进行回顾性分析,对初次人工全髋关节置换术后两种固定方式的假体生存时间进行Kaplan-Meier生存分析。结果两组患者初次行人工全髋关节置换手术时的年龄无统计学差异(P=0.4287),骨水泥固定组假体生存时间0.5~240个月,平均(75.741±7.507)个月;非骨水泥固定组假体生存时间0.3~228个月,平均(67.656±6.689)个月。两组病例假体生存时间差异无统计学意义(P>0.05)。结论初次人工全髋关节置换中,骨水泥固定类形假体生存时间与非骨水泥固定类型假体生存时间无统计学差异,两种固定方式对假体生存无影响,翻修风险相同,临床效果相同。

不同方法治疗老年股骨转子间不稳定骨折疗效对比

目的对比分析生物型加长柄关节置换与股骨近端防旋髓内钉内固定治疗老年股骨转子间不稳定骨折的临床效果。方法选取2019年6月至2021年6月安阳市第三人民医院收治的104例老年股骨转子间不稳定骨折患者作为研究对象,根据不同手术治疗方式将其分为置换组(52例)和固定组(52例),置换组患者采用生物型加长柄关节置换术治疗,固定组患者采用股骨近端防旋髓内钉内固定术治疗,对比观察两组患者围术期相关指标、髋关节恢复情况、生活质量及术后不良事件发生情况。结果置换组患者术中出血量明显多于固定组、手术时间明显长于固定组(t=5545、5150,P均<0001),而首次下床活动时间及住院时间与固定组无明显差异(t=1933、1619,P=0056、0109)。术后12个月,置换组患者髋关节恢复优良率为8077%,明显高于固定组患者的髋关节恢复优良率6154%(χ^(2)=4685,P=0030);置换组患者健康调查量表36(SF-36)中的躯体功能、躯体疼痛、总体健康、生理功能评分均明显高于固定组(t=3062、2868、3028、3440,P=0003、0005、0003、0001)。置换组患者术后不良事件发生率为577%,明显低于固定组患者的术后不良事件发生率2115%(χ^(2)=5283,P=0022)。结论与股骨近端防旋髓内钉内固定相比,生物型加长柄关节置换虽会增加老年股骨转子间不稳定骨折患者术中出血量,延长手术时间,但能够提高患者髋关节功能及生活质量,降低不良事件发生风险,临床效果更佳。

全髋关节置换术中生物型股骨柄沉降的应用研究

目的本研究观察生物型股骨柄应用于全髋关节置换术(total hip arthroplasty,THA)的临床效果,并探究影像学上生物型股骨柄的沉降情况。方法纳入2019年10月至2020年10月在西安交通大学附属红会医院关节中心行THA的124例患者(136髋),其中男性56髋,女性80髋;平均年龄(53.0±12.5)岁,收集纳入研究病例的术前及术后随访时的疼痛视觉模拟评分(visual analog scale,VAS)、Harris髋关节功能评分(Harris hip score,HHS)、生存质量评分(12-item short form health survey,SF-12)、伤口愈合情况、假体松动、感染及翻修等并发症的发生率;术后第1天、1个月、3个月、6个月、1年随访时分别拍摄骨盆正位X线片,并测量股骨柄沉降数据。结果术后1个月、3个月、6个月、1年随访时VAS、HSS及SF-12评分均较术前明显改善,且VAS评分在术后3个月以后无显著变化,HHS评分术后6个月以后无显著变化,SF-12在术后1年内呈逐渐提高趋势。术后1个月时有2例伤口浅表愈合不佳,给予清创缝合后均愈合,术后1年随访期间内,未发生假体松动、感染等并发症。术后3个月内生物型股骨柄有沉降发生,其中术后1个月平均沉降(0.46±2.63)mm,术后3个月沉降(1.15±2.77)mm,3个月后未再发生假体下沉。结论生物型股骨柄在THA术中应用可以获得良好的临床效果,生物型股骨柄在术后前3个月内确有沉降发生,但沉降量不会增加早期手术失败风险。

生物型加长柄半髋关节置换治疗高龄股骨转子间骨折

目的 探讨生物型加长柄半髋关节置换治疗高龄骨质疏松性股骨转子间骨折的疗效。方法 采用生物型加长柄半髋关节置换治疗24例高龄骨质疏松性股骨转子间骨折患者。记录手术时间、术中出血量、术后首次负重时间、骨折愈合时间及术后并发症发生情况,采用髋关节功能Harris评分评价疗效。结果 术后死亡3例;21例获得随访,时间8~12个月。手术时间40~70 min,术中出血量200~500 ml。术后首次负重时间3~14 d。骨折愈合时间45~85 d。切口均一期愈合,无脂肪栓塞、假体周围骨折、关节脱位、假体松动下沉等并发症发生。末次随访时,髋关节功能Harris评分为74~83分,其中良15例,可6例,优良率15/21。结论 生物型加长柄半髋关节置换治疗高龄骨质疏松性股骨转子间骨折可尽早恢复髋关节功能,减少并发症的发生,早期疗效较好。

Buechel-Pappas Total Ankle Replacement: Use of Highly Cross-Linked Polyethylene Meniscal Bearings over a 13 - 15 Year Interval

Background: The Buechel-Pappas (BP) meniscal bearing total ankle replace-ment was initially developed as a “shallow-sulcus” talar component device using cobalt-chromium-molybdenum alloy, in 1978, and later, modified to a “deep-sulcus” talar component device using titanium nitride (TiN) ceramic and porous coating in 1989. Wear related osteolytic cysts were noted in the tibia and talus surrounding these devices that compromised long term fixation and stability when using standard ultra-high molecular weight polyethylene (UHMWPe) as a bearing material. This study explores the use of highly cross-linked UHMWPe (HXLPe) to minimize osteolysis by replacing standard UHMWPe with this more wear-resistant material. Methods: There were 12 primary and 8 revision total ankle replacements followed for 13 to 15 years. HXLPe was used in all meniscal bearings, either as primary or revision implants. All stable metallic tibial and talar components were retained in revision cases. Osteolytic cysts greater than 10 mm in diameter were bone grafted with homologous morselized banked bone through cortical windows in the tibia or talus. No adjuvant screw fixation was used to stabilize any metallic implant. Results: No HXLPe bearings failed in this study, and no re-revisions were performed. No primary total ankle replacement failed in this study, and there were no substantial osteolytic cysts (>2 mm) observed in primary total ankle replacements on plain X-rays. All bone grafted osteolytic cysts in revision ankle replacements remained stable, even though partial resorption of the grafted material was identified in most of the ankles. No loosening of porous coated and TiN coated tibial and talar components were seen;the longest surviving metal components in the revision group was 24 years with the revised bearing at 15 years. Conclusions: HXLPe has greatly improved wear resistance in meniscal-bearing BP total ankle replacements in both primary and revision arthroplasties. Osteolytic cysts can be successfully bone grafted during bearing exchange revisions. Primary and revision, cementless BP metallic total ankle components have remained well-fixed to bone in the long term (greater than 20 years), without the use of adjuvant screw fixation.

生物型与骨水泥型股骨髁假体单髁置换治疗膝关节内侧间室骨关节炎的比较

背景:生物型单髁置换假体的应用在临床上逐渐流行,但是其临床应用效果仍然存在争论。目的:对比生物型和骨水泥型股骨髁假体单髁置换治疗膝关节前内侧骨关节炎的早期临床效果。方法:选择2020年1月至2021年1月徐州医科大学附属医院骨关节科收治的膝关节内侧间室骨关节炎患者62例,按照随机数字表法分为2组,其中骨水泥组31例,生物型组31例,两组均进行单髁置换治疗。记录术后目测类比评分、膝关节活动度、美国特种外科医院功能评分及患者满意度,进行统计学评价。结果与结论:(1)两组患者在术后1,3,6个月膝关节活动度、术后6个月美国特种外科医院功能评分优良率及患者满意度方面相比,差异无显著性意义(P>0.05);(2)骨水泥组在术后1,3个月时静息状态下目测类比评分优于生物型组(P<0.05);术后3个月时活动状态下目测类比评分优于生物型组(P<0.05);(3)所有患者无术后感染及深静脉血栓发生,有2例患者术后伤口延迟愈合,经换药治疗后伤口痊愈;(4)提示生物型股骨假体单髁置换治疗前内侧骨关节炎安全有效,与骨水泥型股骨假体相比虽然在术后早期对疼痛的缓解较差,但2种假体在术后膝关节活动度、膝关节临床功能方面具有同等效果;对于高龄骨质疏松患者作者推荐选择骨水泥假体。

钽金属骨小梁胫骨假体在初次全膝置换术后的中期疗效研究

目的比较初次全膝关节置换术(total knee arthroplasty,TKA)中应用钽金属骨小梁一体化胫骨假体(tantalum monoblock tibial component,TMT)和骨水泥型胫骨假体的中期临床效果。方法回顾分析2012—2015年在西京医院初次全膝关节置换术中应用TMT的患者54例(65膝)和骨水泥型胫骨假体43例(52膝)。TMT组54例(65膝),其中男性10例,女性44例;平均年龄(62.8±5.6)岁。骨水泥型胫骨假体组43例(52膝),其中男性8例,女性35例;平均年龄(64.4±4.8)岁。比较分析TMT组和骨水泥型胫骨假体组患者术后末次随访美国膝关节协会评分(knee society score,KSS)临床评分、KSS功能评分、疼痛视觉模拟评分(visual analogue scale,VAS)、关节活动度(range of motion,ROM)和胫股角(femorotibial angle,FTA),术后X线评价,并发症及假体生存率;比较分析TMT组患者术前及术后末次随访KSS临床评分、KSS功能评分、VAS评分、ROM和FTA。结果所有患者均获随访,随访4~7年,平均(5.0±1.8)年;两组患者术后末次随访KSS临床评分、KSS功能评分、ROM、VAS、FTA比较差异无统计学意义;TMT组患者术前与术后末次随访KSS临床评分、KSS功能评分、ROM、VAS、FTA比较差异有统计学意义。TMT组1例因膝关节不稳翻修,骨水泥型胫骨假体组2例因假体周围感染(periprostheticjoint infection,PJI)行部分翻修;TMT组术后早期透亮线逐渐消失,展现出良好的骨长入特性;TMT组PJI发生率较骨水泥型胫骨假体组低,两组术后其他并发症及假体生存率比较差异无统计学意义。结论初次TKA中应用TMT具有良好的骨长入和抑菌性等优势,临床效果良好,理论假体生存率长,但长期效果仍需观察评估。

生物型加长柄髋关节置换术中股骨大转子不同重建方法的疗效比较

目的 比较生物型加长柄髋关节置换治疗老年不稳定型股骨转子间骨折术中大转子不同重建方法的临床疗效。方法 根据大转子重建方式不同将40例老年不稳定型股骨转子间骨折患者分为A组(采用生物型加长柄髋关节置换联合尺骨鹰嘴锁定钢板重建大转子治疗,19例)和B组(采用生物型加长柄髋关节置换联合钢丝重建大转子治疗,21例)。比较两组手术情况、Harris评分以及术后并发症发生率。结果 患者均获得随访,时间12~52(19.23±3.56)个月。两组术后大转子骨折均复位满意。手术时间A组长于B组(P<0.001),术中出血量、术后下地部分负重时间、住院时间两组比较差异均无统计学意义(P>0.05)。骨折均顺利愈合,时间3.0~4.5(3.72±1.13)个月。Harris评分术后6周、3个月、6个月两组比较差异均无统计学意义(P>0.05),术后1年A组优于B组(P<0.001)。术后并发症发生率A组低于B组(P<0.05)。结论 生物型加长柄髋关节置换治疗老年不稳定型股骨转子间骨折,术中采用尺骨鹰嘴锁定钢板或钢丝重建大转子均可取得满意的临床疗效,与钢丝重建大转子治疗相比,尺骨鹰嘴锁定钢板术后并发症发生率较低,但手术时间较长。

解剖型非骨水泥固定股骨假体在股骨头坏死治疗中的应用

目的 :总结使用解剖型非骨水泥固定股骨假体治疗晚期股骨头坏死的临床效果及经验。方法 :回顾性分析了采用解剖型非骨水泥固定股骨假体对 12 3例股骨头坏死患者 ,162个髋进行的人工全髋关节置换手术。对其中 58例患者 87个髋关节进行了平均 3 7.6个月的随访 ,通过Harris评分及X线片评价临床效果。结果 :Harris评分的优良率达 95.3 %。X线片未见有松动和假体下沉。结论 :使用Ribbed解剖型非骨水泥固定假体治疗晚期股骨头坏死的短期效果满意。

髋臼缺损重建及骨水泥和非骨水泥全髋关节置换术临床观察

目的 :寻找全髋置换术髋臼缺损处理的方法。并对骨水泥和非骨水泥全髋关节置换术临床观察比较。方法 :采用切下的股骨头 ,保留软骨修成帽状 ,软骨面位于腹腔侧 ,然后将假臼杯用骨水泥与重建的髓臼相嵌。同时将一组髋臼采用非骨水泥 ,而骨水泥固定股骨干假体 ,另一组采用骨水泥全髋关节置换。结果 :进行了临床和放射学随访。随访时间为 1～ 3 .5年 (平均为 2 .4年 )。发现非骨水泥组 16例优良率为 94% ,采用骨水泥置换组 16例优良率为 95 .6%。随访期间两者均未发现假体有松驰象。但非骨水泥组中有 2例行走时觉轻微疼痛。 98%随访者对手术效果满意。结论 :对 60岁以下用非骨水泥。 70岁以上用骨水泥为佳。对 60～ 70岁之间髋臼采用非骨水泥 ,而骨水泥固定股骨干假体效果更好。本文对选择人工关节类型、掌握骨水泥和非骨水泥适应证及术中出现髋臼缺损的处理有其重要指导意义。

解剖型非骨水泥全髋人工关节置换术近中期疗效研究

目的探讨解剖型非骨水泥全髋人工关节置换术治疗髋关节疾病的近中期临床疗效。方法2001年1月-2005年6月，采用Ribbed解剖型非骨水泥全髋人工关节置换术治疗髋关节疾病34例（38髋）。年龄29～55岁，平均42．7岁。病程3～18年，平均5．2年。其中股骨颈骨折7例7髋，髋臼骨折后创伤性关节炎5例5髋，股骨头坏死15例16髋，强直性脊柱炎7例10髋。术后获随访的21例患者术前Harris评分25～57分，平均38．6分。结果21例（23髋）获随访8～61个月，平均35个月。术后Harris评分76～98分，平均92．3分，与术前比较差异有统计学意义（P〈0．05）；术后髋关节功能优良率达93．5％。其中4例出现轻微大腿疼痛，经休息或服用非甾体类止痛药物后缓解。随访时X线片未见假体松动和下沉，呈骨长人性稳定。结论应用Ribbed解剖型非骨水泥全髋人工关节置换术治疗髋关节疾病，近中期效果满意。

非骨水泥型全髋关节置换术患者的早期康复

目的:比较早期负重和晚期负重对非骨水泥型全髋关节置换术后患者功能恢复和生存质量的影响。方法:共收集患者30例(32髋),分为早期负重组(治疗组)和晚期负重组(对照组),除术后负重方法不同外,均予系统的早期康复治疗。术前、术后12周内进行临床和放射学的评定和比较。结果:术后12周,早期负重组患者能够更早地获得独立步行的能力(P<0.001),Harris评分和WOMAC评分改善更明显(P<0.001);SF-36量表的评分中,早期负重组患者的生理职能、生理机能,以及社会功能评分更高(P<0.001)。术后12周,放射学检查结果初步表明早期负重并未导致假体固定失败。结论:术后12周,早期负重组患者功能改善更明显,更快地获得独立的日常生活和社会活动能力,生存质量更高。早期负重的康复治疗,必须在一定条件下进行。