骨水泥型与非骨水泥型全膝关节置换后的步态差异

背景:全膝关节置换已经被证明是一种有效治疗膝骨性关节炎的方法,但是不同类型的全膝关节置换假体固定方式术后所产生的膝关节下肢生物力学差异至今仍不明确。目的:通过三维步态分析骨水泥固定和非骨水泥固定两种不同的全膝关节置换术后患者的膝关节生物力学差异。方法:分别选取骨水泥型全膝关节置换以及非骨水泥型全膝关节置换患者各16例,通过测力台以及三维步态分析系统比较2组患者术前以及术后3个月的膝关节生物力学变化并进行对比。结果与结论:与手术前相比两组患者术后步速及步长均明显增加,支撑相在整个步态周期中的百分比明显减小,膝关节屈在支撑相及摆动相中最大屈曲角度均明显增加,膝关节外翻角度增加。两种患者术后膝关节内翻角度以及膝关节内收力矩均明显减小。提示,骨水泥型与非骨水泥型全膝关节置换术均能有效改善膝骨性关节炎患者的步行能力以及下肢关节功能,两者间未见明显生物力学差异。     

骨水泥型与非骨水泥型全膝关节置换后的步态差异

背景：全膝关节置换已经被证明是一种有效治疗膝骨性关节炎的方法,但是不同类型的全膝关节置换假体固定方式术后所产生的膝关节下肢生物力学差异至今仍不明确。目的：通过三维步态分析骨水泥固定和非骨水泥固定两种不同的全膝关节置换术后患者的膝关节生物力学差异。方法：分别选取骨水泥型全膝关节置换以及非骨水泥型全膝关节置换患者各16例,通过测力台以及三维步态分析系统比较2组患者术前以及术后3个月的膝关节生物力学变化并进行对比。结果与结论：与手术前相比两组患者术后步速及步长均明显增加,支撑相在整个步态周期中的百分比明显减小,膝关节屈在支撑相及摆动相中最大屈曲角度均明显增加,膝关节外翻角度增加。两种患者术后膝关节内翻角度以及膝关节内收力矩均明显减小。提示,骨水泥型与非骨水泥型全膝关节置换术均能有效改善膝骨性关节炎患者的步行能力以及下肢关节功能,两者间未见明显生物力学差异。     

Gait during hydrokinesitherapy following total knee arthroplasty

Purpose. To obtain gait parameters during hydrotherapy (HT) in patients who were referred for rehabilitation after primary total knee arthroplasty (TKA).

Method. The study had a cohort prospective design. Patients who had undergone TKA followed a HT rehabilitation programme. Twenty-two consecutive patients were enrolled. Four of them dropped out for various reasons, independently of HT. Therefore 18 patients could be evaluated (5 men and 13 women). Eighteen age-matched healthy volunteers were the control subjects. Nine patients had a right TKA and nine a left TKA. On the average HT duration was 18.4 days (SD 1.4).

Results. The patients presented with a mean speed of 912 (SD 275) meters per hour (m/h) at the baseline. At the last session the mean speed was 1330 (SD 416) m/h. The mean stance duration was 1.75 s (SD 0.34) on the operated side and 1.83 s (SD 0.41) on the non-operated side. By contrast, the mean swing duration was 1.10 s (SD 0.25) on the operated side and 1.13 s (SD 0.34) on the non-operated side. The step duration was the same on both sides. At the beginning of HT the mean stance/swing ratio was 1.94 on the operated side, whereas it was 1.77 on the non-operated side. In the controls the ratio was 1.46. At the beginning the mean stride length was 0.526 m (SD 0.147) and the value became 0.556 (SD 0.138) after 18 training sessions. At the individual level, recovery occurred in a non-linear fashion (Best Fitting, 7th-grade Fourier finite series).

Conclusions. The study design permits accurate definition of stride parameters during rehabilitation which allows optimization of the programme. Increase in speed and regain of balance are the main targets of a HT programme and are monitored on a daily basis.     

Gait during hydrokinesitherapy following total knee arthroplasty

Purpose.?To obtain gait parameters during hydrotherapy (HT) in patients who were referred for rehabilitation after primary total knee arthroplasty (TKA).

Method.?The study had a cohort prospective design. Patients who had undergone TKA followed a HT rehabilitation programme. Twenty-two consecutive patients were enrolled. Four of them dropped out for various reasons, independently of HT. Therefore 18 patients could be evaluated (5 men and 13 women). Eighteen age-matched healthy volunteers were the control subjects. Nine patients had a right TKA and nine a left TKA. On the average HT duration was 18.4 days (SD 1.4).

Results.?The patients presented with a mean speed of 912 (SD 275) meters per hour (m/h) at the baseline. At the last session the mean speed was 1330 (SD 416) m/h. The mean stance duration was 1.75 s (SD 0.34) on the operated side and 1.83 s (SD 0.41) on the non-operated side. By contrast, the mean swing duration was 1.10 s (SD 0.25) on the operated side and 1.13 s (SD 0.34) on the non-operated side. The step duration was the same on both sides. At the beginning of HT the mean stance/swing ratio was 1.94 on the operated side, whereas it was 1.77 on the non-operated side. In the controls the ratio was 1.46. At the beginning the mean stride length was 0.526 m (SD 0.147) and the value became 0.556 (SD 0.138) after 18 training sessions. At the individual level, recovery occurred in a non-linear fashion (Best Fitting, 7th-grade Fourier finite series).

Conclusions.?The study design permits accurate definition of stride parameters during rehabilitation which allows optimization of the programme. Increase in speed and regain of balance are the main targets of a HT programme and are monitored on a daily basis.     

Gait in the early days after total knee and hip arthroplasty: A comparison

Purpose.?To evaluate whether gait after Total Knee Arthroplasty (TKA) is different from gait after Total Hip Arthroplasty (THA) in the early days following surgical intervention.

Method.?The gait was studied in water, thus exploiting its buoyancy force. Twenty consecutive patients underwent TKA and twenty consecutive patients underwent THA. The mean age was 70.2 years (SD 6.9). Twenty age-matched volunteers were the control group.

Results.?At the beginning TKA and THA patients had the same speed and the same step length. At day 15 there was a speed difference in favour of THA patients (t = ? 2.245, df 38, p = 0.031). Likewise, the step length was longer in THA patients (t = ?2.293 df 38, p = 0.027). In contrast to TKA patients, THA patients were unbalanced, having a longer stance phase on the non-operated leg and a longer swing on the contralateral one.

Conclusions.?Gait strategies were completely different after TKA and THA interventions. TKA patients were balanced over their feet and they appeared more cautious and more concerned about gait quality than moving quickly. By contrast, THA patients were unbalanced, having a longer stance phase on the non-operated leg and a longer swing on the contralateral one. However, their speed gain was higher.     

Gait in the early days after total knee and hip arthroplasty: a comparison

Purpose. To evaluate whether gait after Total Knee Arthroplasty (TKA) is different from gait after Total Hip Arthroplasty (THA) in the early days following surgical intervention.

Method. The gait was studied in water, thus exploiting its buoyancy force. Twenty consecutive patients underwent TKA and twenty consecutive patients underwent THA. The mean age was 70.2 years (SD 6.9). Twenty age-matched volunteers were the control group.

Results. At the beginning TKA and THA patients had the same speed and the same step length. At day 15 there was a speed difference in favour of THA patients (t = - 2.245, df 38, p = 0.031). Likewise, the step length was longer in THA patients (t = -2.293 df 38, p = 0.027). In contrast to TKA patients, THA patients were unbalanced, having a longer stance phase on the non-operated leg and a longer swing on the contralateral one.

Conclusions. Gait strategies were completely different after TKA and THA interventions. TKA patients were balanced over their feet and they appeared more cautious and more concerned about gait quality than moving quickly. By contrast, THA patients were unbalanced, having a longer stance phase on the non-operated leg and a longer swing on the contralateral one. However, their speed gain was higher.     

全膝关节置换前后的三维步态分析

目的:通过三维步态分析的生物力学方法对全膝关节置换患者进行步态分析.方法:选择2005-11-2006-11大连大学附属中山医院全膝关节置换患者53例,年龄42～82岁,平均59.2岁.男33例,平均身高(172±13)cm,体质量(64±11)kg;女20例,平均身高(155±11)cm, 体质量(45±11) kg.术前和术后1,6,12个月应用东方新锐DVMC-8801 三维运动分析系统进行步态分析, 每次测量要求至少有3个步长长度,步速恒定.将髋、膝、踝关节共设置16个点, 并连接成面,建成三维动态图像.结果: 置换后行走速度、步频、步长及患肢站立相均有明显改善(P<0.01),置换后1年步态分析各参数基本达到正常水平.置换前骨髋关节最大曲度为15.,后伸为8.,膝关节最大屈曲度70.,踝关节最大屈曲度15..置换后6个月髋关节最大屈曲度为27.,后伸17.,膝关节最大屈曲度50.,踝关节最大屈曲度14.;各指标与置换前相比差异有显著性(P<0.01). 结论:运用三维步态分析对行全膝置换的患者进行功能量化评价,可以更准确的了解膝关节的生物力学变化,进而探索最佳的治疗手段和置换后的康复方法.     

人工膝关节置换与围手术期系统康复

目的:探讨围手术期系统康复对人工膝关节置换术后效果的影响.方法:收集中国期刊全文数据库1996-01/2006-12及PUBMED1996-01/2006-12有关人工膝关节置换围手术期系统康复的文献,对系统关节功能训练方法及其对人工膝关节置换手术效果的影响进行综合分析.结果:术前教育、关节活动度训练、肌力训练、本体感觉训练及行走步态训练是人工膝关节置换术围手术期系统康复的最重要的内容.人工膝关节置换术患者经过系统规范的围手术期康复治疗:其术后膝关节的关节活动度、下肢肌肉力量、行走时的步态及本体感觉等诸多方面均能够在短时间内恢复正常.结论:人工膝关节置换围手术期系统康复治疗对于手术后的临床效果至关重要,是术后膝关节功能达到预期效果的重要措施.     

全膝关节置换后的多模式镇痛

背景：围全膝关节置换期疼痛处理一直是临床所关注的重点问题,寻找安全有效的镇痛方式,成为关节外科医生的重要任务之一。目的：比较硬膜外镇痛和股神经阻滞镇痛在患者全膝关节置换后镇痛、康复的效果,探索相关的多模式联合镇痛方案。方法：随机选取行单侧膝关节置换的患者40例,按照镇痛方案的不同分为硬膜外镇痛组和股神经阻滞镇痛组,每组20例。患者在连续硬膜外麻醉下进行单侧膝关节置换并进行术前宣教和塞来昔布给药。置换后硬膜外镇痛组通过留置导管连接0．2％罗哌卡因、2mg／L芬太尼止痛泵镇痛;股神经阻滞镇痛组通过股神经阻滞导管间断注射0．2％罗哌卡因镇痛。观察全膝关节置换后患者6,12,24h和2—7d每天的疼痛程度,以及2-7d每天的膝关节活动度。结果与结论：全膝关节置换后2-7d,2组患者每天的静息痛和活动痛的目测类比评分均呈下降的趋势,股神经阻滞镇痛组患者的疼痛程度小于硬膜外镇痛组患者。置换后2-7d,股神经阻滞镇痛组和硬膜外镇痛组患者膝关节活动度都逐渐升高,股神经阻滞镇痛组患者膝关节活动度大于硬膜外镇痛组。结果说明虽然硬膜外镇痛和股神经阻滞镇痛都能缓解全膝关节置换术后疼痛,但股神经阻滞镇痛在全膝关节置换后近期的运动镇痛效果优于硬膜外镇痛,能加快患者关节功能的康复,且多模式联合镇痛方案能有效控制疼痛。     

老年病人全膝关节置换术后下肢深静脉血栓的预防护理

总结15例老年病人全膝关节置换术后下肢深静脉血栓的预防护理。通过分析下肢深静脉形成的危险因素,强调实施术前健康教育、术后观察与护理、应用药物及机械预防方法,包括肌力增强训练、关节被动活动及预防性使用外来性充气压迫法等护理措施是提高手术成功率、保证手术效果及减少下肢深静脉血栓等并发症发生的重要保证。     

Gait analysis after bi-compartmental knee replacement

Background

It is reported that a majority of the patients with knee osteoarthritis have cartilage degeneration in medial and patellofemoral compartments. A bi-compartmental knee replacement system was designed to treat osteoarthritis at medial and patellofemoral compartments. To date, there is very little information regarding the knee mechanics during gait after bi-compartmental knee replacement. The purpose of the study was to evaluate knee strength and mechanics during level walking after knee replacement.

Methods

Ten healthy control subjects and eight patients with unilateral bi-compartmental knee replacement participated in the study. Maximal isokinetic concentric knee extension strength was evaluated. 3D kinematic and kinetic analyses were conducted for level walking. Paired Student t-test was used to determine difference between surgical and non-involved limbs. One way MANOVA was used to determine difference between surgical and control groups.

Findings

The surgical knee exhibited less peak torque and initial abduction moment than both the non-involved and control limbs (P < 0.05). The non-involved limb had less knee extension at stance and greater knee extensor moment during push-off than both the surgical and control limbs (P < 0.05). No differences were found for other typical knee mechanics among the surgical, non-involved, and control limbs during walking (P > 0.05).

Interpretations

Patients with bi-compartmental knee replacement exhibited good frontal plane knee mechanics and were able to produce the same level of knee extensor moment as healthy control limbs during walking. While showing some compensatory patterns during walking, patients with bi-compartmental knee replacement largely exhibited normal gait patterns and knee mechanics.     

Determinants of function after total knee arthroplasty

BACKGROUND AND PURPOSE: Decreasing hospital stays for patients with total knee arthroplasties (TKAs) have a direct effect on rehabilitation. The identification of modifiable determinants of postsurgical functional status would help physical therapists plan for discharge from hospitals. The purpose of this study was to identify preoperative determinants of functional status after a TKA. PARTICIPANTS: Using a community-based, prospective cohort study, data were collected from 276 patients who received a primary TKA in a Canadian health care region. Data were collected in the month before surgery and 6 months after surgery. METHODS: Function was measured using the function subscale of a disease-specific measure--the Western Ontario and McMaster Universities (WOMAC) Osteoarthritis Index--and a generic health status measure--the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36). Independent variables examined included demographic variables (eg, age, sex), medical variables (eg, diagnosis, number of comorbid conditions, ambulatory status), surgical variables (eg, type of implant, number of complications), and knee range of motion. RESULTS: At 6 months after surgery, the average WOMAC physical function score was 70.5 (SD=18.2) and the average SF-36 physical function score was 44.8 (SD=25.3). Using multiple regression analyses, baseline function, walking device, walking distance, and comorbid conditions predicted 6-month function (WOMAC: R2=.20; SF-36 physical function: R2=.27). DISCUSSION AND CONCLUSIONS: Patients who have lower preoperative function may require more intensive physical therapy intervention because they are less likely to achieve functional outcomes similar to those of patients who have less preoperative dysfunction.     

活动平台假体人工膝关节置换后的中期随访

背景：虽然活动平台人工膝关节假体具有理论上的设计先进性以及体外运动学和磨损方面的优势,但临床效果是否优于固定平台假体目前尚不明确。目的：评估国人活动平台假体人工膝关节置换后的中期临床效果,为人工膝关节置换假体的选择提供临床依据。方法：纳入2006年12月至2009年6月于北京同仁医院采用旋转平台假体（PFC sigma RP）进行初次人工膝关节置换的膝关节骨关节炎和类风湿关节炎患者,对比观察患者置换前及置换后末次随访 KSS 评分、KSS功能评分、髌骨评分、膝前痛评、膝关节活动度、最大屈伸膝角度。记录患者置换后包括感染、髌骨弹响、聚乙烯垫片脱位、深静脉血栓等并发症情况。拍摄置换后标准的膝关节前后位、侧位及 Merchant 位 X 射线片,观察假体的力线、假体周围透亮区、髌骨脱位情况。将本组活动平台假体的随访结果与文献报道的固定平台假体人工膝关节置换的中期随访结果进行比较。结果与结论：最终共有31例45膝纳入试验,患者年龄（64.56±10.33）岁,随访时间3.9-7.6年。置换后末次随访时的各项评分、膝关节活动度及最大屈伸膝角度均较置换前明显改善,但与文献报道的固定平台置换后中期随访结果相当。未发现透亮线、假体松动、聚乙烯垫片脱出;虽然仅做了有限的髌外侧松解,所有患者均未出现髌骨脱位或半脱位;2例患者（2膝）出现髌骨弹响。提示活动平台膝关节置换后的中期临床效果满意。虽然仅做了有限的髌外侧松解,但没有发现髌骨脱位和半脱位,这可能是旋转平台设计上髌股关节方面优势的体现。     

Rising from chair after total knee arthroplasty

Objective. This study was performed to determine the biomechanics of chair rising by patients after successful total knee arthroplasty (TKA).Design. Relative full body joint positions and ground reaction forces were measured by a motion analysis system and two force plates.Background. Chair-rise produces increased joint forces and moments compared with level walking, and it is difficult to rise from a chair for most patients with neurological or musculoskeletal abnormalities. Previous motion studies of patients after TKA had focused on gait analysis and stair climbing.Methods. Twelve patients after successful TKA were studied while performing sit-to-stand transfer from a chair at four chair heights without the use of arm rests. The results of this group were compared with those of 12 healthy elderly subjects and 14 osteoarthritic patients before TKA.Results. Compared with the healthy elderly group during chair rising, the patients after TKA had increased horizontal mass center velocity, increased vertical hip joint forces, the maximum sound-side hip extension moment, but decreased vertical mass center velocity.Conclusion. Compensatory mechanisms of chair rising were adopted by the arthritic patients before and after TKA. The mechanisms include increased forward body bending and more weight shift on the sound side.     

全膝置换术后的持续性冷冻疗法

进行全膝置换手术的患者与日俱增,术后肿胀和疼痛仍未很好的解决。冷冻疗法具有悠久的历史,可以降低细胞代谢、血流速度、炎症反应、水肿、疼痛、痉挛、皮肤肌肉关节内的温度、渗透性、神经传导速度。因此,全膝置换手术后进行冷冻疗法具有广阔的前景。冷冻疗法包括冰袋、化学冰袋、可充气式臂带装置(包含冰水和具有压迫性)、制冷器和套袖连接的循环装置。运用冷冻疗法的时间从创伤后立即到伤后1￣3d,持续时间和频率各异。其中持续性冷冻疗法(制冷器和套袖连接的循环装置)可以较好地减轻肿胀,减少出血量及止痛药的用量,同时能改善关节活动度。持续性冷冻疗法的皮肤温度应控制在10￣15℃,根据敷料的厚薄适当调整机器温度。     

Acute arterial occlusion after total knee arthroplasty

There are a number of complications associated with total knee-joint arthroplasty. These include deep venous thromboses, peroneal palsy, infection, anemia, and Ogilvie's syndrome. An uncommon but potentially limb-threatening complication is acute arterial occlusion. Approximately 35 cases have been reported in the orthopedic literature. Prompt recognition and treatment intervention are the keys to successful outcome. We describe the case of one patient who had mild peroneal palsy and developed acute arterial occlusion 9 days postoperatively while on the inpatient rehabilitation service. Prompt aggressive management restored arterial circulation to the lower limb. Careful management of patients after total knee arthroplasty requires an understanding that arterial occlusion is a rare limb-threatening complication of surgery, but that it is treatable with prompt, deliberate management. Physiatrists should be aware that this condition exists in postoperative knee-joint arthroplasty patients. They should pay careful attention to any patient with a history of peripheral vascular disease or postoperative peroneal palsy.     

Continuous passive motion after total knee arthroplasty

We established a clinical retrospective study to determine the benefit of continuous passive motion after total knee replacement. Nineteen patients who had continuous passive motion (CPM) after total knee replacement were compared to a control group of 15 patients who did not have CPM. The number of days to discharge was 16 for the CPM group and 20 for the control group. When the patients with complications from CPM were excluded from the CPM group, the average number of days to discharge for the CPM group was 12. The average number of postoperative days before reaching 90 degrees of knee flexion was nine in the CPM group as compared to 16 days in the control group. The average blood loss was not significantly different in the two groups. There were four wound healing complications in the CPM group. All four complications occurred in patients who achieved 90 degrees of knee flexion in less than six days postoperatively. We developed a protocol for maximal use of CPM without significant wound complications after total knee surgery.     

单髁置换术与微创全膝关节置换术治疗老年膝关节骨性关节炎的临床效果

目的比较单踝置换术(UKA)及微创全膝关节置换术(MIS-TKA)治疗老年膝关节骨性关节炎的临床效果。方法选取2015年1月至2018年1月我院收治的84例膝关节骨性关节炎老年患者为研究对象,根据治疗方式的不同将其分为单踝组(42例,UKA)与全膝组(42例,MIS-TKA)。比较两组临床疗效。结果单踝组手术时间、住院时间及直腿抬高时间短于全膝组,术中出血量少于全膝组(P<0.05)。术后1个月,单踝组KSS各项评分均优于全膝组(P<0.05)。术后6个月,单踝组动态步态指数及ROW均高于全膝组(P<0.05),但术后12个月时无差异(P>0.05);术后6、12个月,两组HSS评分均无差异(P>0.05)。术后6个月,两组AIMS2-SF评分均升高,但组间无差异(P>0.05)。结论 UKA与MIS-TKA均是治疗老年膝关节骨性关节炎的有效术式,能有效改善膝关节功能,提高生活质量水平,但UKA的创伤及出血少,对膝关节骨性关节炎术后恢复更有优势。     

导航和传统全膝关节置换后肢体和假体力线恢复对比的Meta分析

背景：目前计算机辅助导航技术已经越来越多地应用于全膝关节置换中。计算机辅助导航全膝关节置换是否比传统全膝关节置换更具优势目前尚无定论。目的：系统评价计算机辅助导航和传统全膝关节置换后肢体和假体力线的恢复情况。方法：计算机检索2013年6月前PubMed/Medline、EMBASE、Cochrane CENTRAL、ScienceDirect数据库,纳入计算机辅助导航和传统全膝关节置换的随机对照试验,应用Cochrane协作网提供的RevMan 5.2.5软件进行Meta分析。选取髋-膝-踝机械轴或胫股关节角、股骨假体冠状角、股骨假体矢状角、胫骨假体冠状角、股骨假体矢状角5个指标进行比较,以偏离中线2°或3°确定为力线不良。结果与结论：共纳入19篇随机对照试验文献,共2654例（3392膝）。Meta分析结果显示,计算机辅助导航全膝关节置换后机械轴恢复精确率明显优于传统全膝关节置换,其中偏倚3°时,P〈0.00001;偏倚2°时, P=0.0008。计算机辅助导航全膝关节置换后股骨假体冠状角恢复精确率（3°）明显优于传统全膝关节置换（P=0.002）;偏倚2°时两种方案差异无显著性意义（P=0.290）。计算机辅助导航全膝关节置换后股骨假体矢状角恢复精确率（3°）明显优于传统全膝关节置换（P=0.040）;偏倚2°时两种方案差异无显著性意义（P=0.950）。计算机辅助导航全膝关节置换后胫骨假体冠状角恢复精确率明显优于传统全膝关节置换,偏倚3°时,P=0.0007;偏倚2°时,P=0.002。计算机辅助导航全膝关节置换后股骨假体矢状角恢复精确率（3°）明显优于传统全膝关节置换（P=0.030）;偏倚2°时两种方案差异无显著性意义（P=0.260）。提示计算机辅助导航全膝关节置换后肢体力线、股骨/胫骨假体力线偏倚3°以内的精确率均优于传统全膝关节置换,但股骨假体冠状角、股骨假体矢状角、股骨假体     

膝关节置换治疗膝内翻畸形的力学分析

人工全膝置换治疗膝内翻畸形已成为膝内翻畸形外科治疗的主要方式之一,但膝关节内翻畸形的患者行人工全膝关节置换的难度较大,尤其是在软组织生物力学方面的争议较多.为更好地评估人工全膝置换治疗膝内翻畸形的生物力学性能,文章应用计算机检索PubMed数据库检索2006/2008关丁膝关节置换治疗膝内翻方面的文章,检索词"TKA,Varvs knee",对资料进行初审.选取符合实验要求的有关文章进行总结分析.结果显示对于严重的膝内外翻畸形和屈曲畸形的患者,软组织松解平衡应有计划、分步骤地进行,每完成一步都要进行测量,要做到既纠正到位,又不可过度纠正造成关节继发不稳定.股骨、胫骨要求对线准确,保证假体置入后股骨头中心、膝关节中心和踝关节中心位于一直线.同时又回顾性分析了2000-01/2006-07河南省南阳市骨科医院膝内翻畸形骨关节炎患者人工全膝置换后43例患者的临床结果,并采用KSS评分对临床结果进行评估,其中5例失访,38例46膝获完整随访,平均随访5年.术前至最后1次随访,均膝关节功能评分27(12～55)分/77(56～98)分:92%的患者膝关节活动度超过90°多数病例术后膝关节力线正常,4例残留5°～10°内翻畸形.