膝骨性关节炎中医手法与功能锻炼后的生物力学分析

背景：应用现代步态分析技术诊断、评估膝骨性关节炎患者足底压力分布的报道较少,尚未建立骨性关节炎患者特征性的足底压力数据库。目的：评估中医手法结合功能锻炼对膝关节骨性关节炎的治疗效果。方法：选取符合条件的左侧膝关节骨性关节炎患者40例,随机分为2组。对照组20例采用常规治疗法,治疗组20例运用中医手法结合功能锻炼治疗。分别对治疗前及治疗后3个月的症状体征进行日本矫形外科学会评分及步态测试,比较各组治疗前后疗效的差异。结果与结论：在减轻步行时疼痛方面,治疗组和对照组均有显著疗效,两组疗效差异无显著性意义。治疗组在上下楼梯、关节屈曲活动度方面的效果治疗前后差异显著,对照组则不明显;其中治疗后关节的屈曲活动治疗组显著优于对照组。在消肿方面两组无明显差异。治疗组日本矫形外科学会评分总评分显著高于治疗前(P < 0.05),对照组在疗前疗后无统计学差异。在步态指标上,两组足底各区受力时间百分比、单足支撑期参数和足底压力峰值都有改善,但治疗前后差异不明显。而治疗组步角的改善在治疗后效果显著,与对照组相比也具有显著意义。治疗组指标虽然具有诸多方面的改善,但并没有达到正常值。中国组织工程研究杂志出版内容重点：组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程     

Changes of gait patterns and muscle activity after intraarticular treatment of patients with osteoarthritis of the knee: A prospective, randomised, doubleblind study

Evaluation of gait performance and muscle activity patterns as well as clinical efficacy and safety after intraarticular injections with hyaluronan (Ostenil) compared with triamcinolone (Volon A10) injections in patients with knee osteoarthritis.This was a prospective, randomised, double-blind clinical trial evaluating the influence of five injections of hyaluronan or triamcinolone on gait pattern and muscle activity. For the clinical evaluation visual analogue scale, Lequesne index, and Knee Society Score were used. Quality of life was estimated with the SF-36.The definitive analysis was performed on the population who received all five injections and were examined in the two follow-up visits. Fifteen patients were treated with triamcinolone and 20 with hyaluronan. Significant improvement could be demonstrated for pain scale and clinical scores in both groups. Gait patterns showed significant differences only for Knee Abduction Moment (p = 0.007) in the hyaluronan group and for Maximum Vertical Force 1 and 2 between the both groups in the follow up visit (p = 0.018) (p = 0.019). In both groups there was no significant difference regarding to muscle activity. Quality of life showed no changes in all visits between the groups.Hyaluronan was not superior to triamcinolone. The results suggest that treatment with hyaluronan can reduce pain and improve knee function. A significant short term improvement in gait and muscle activity patterns, however, was not observed, in either hyaluronan or triamcinolone.     

Two-year incidence and predictors of future knee arthroplasty in persons with symptomatic knee osteoarthritis: Preliminary analysis of longitudinal data from the osteoarthritis initiative

ObjectiveThere is little evidence to guide physicians when discussing future likelihood of knee arthroplasty with patients who have symptomatic knee osteoarthritis. Data from Osteoarthritis Initiative (OAI) was used to determine the incidence of and predictors for knee arthroplasty.MethodsOAI data were collected on a sample of 778 persons aged 45 to 79 years with symptomatic knee osteoarthritis. An extensive set of measurements were obtained at baseline and persons were followed for 2 years to identify who underwent knee arthroplasty. Random forest analysis was used to identify optimal variables that discriminate among those who did and those who did not undergo knee arthroplasty.ResultsThe two year incidence of knee arthroplasty in the cohort was 3.7% (95%CI, 2.6%, 5.3%). Because of the low number of knee arthroplasty procedures, the predictor analysis was preliminary in nature. The analysis identified several variables that could be used to assist in identifying patients at future risk for knee arthroplasty.ConclusionFor persons at high risk of knee arthroplasty, the two year incidence of knee arthroplasty is very low. The most powerful predictors were those that accounted for disease severity and functional loss. These data could assist physicians in advising patients with knee osteoarthritis on future surgical care.     

膝骨关节炎时关节滑液中炎症相关物质的表达

背景：膝骨关节炎的主要改变是关节软骨面的退行性病变和继发性的骨质增生,病变的机制还不明确,但现已有实验证实膝骨关节炎的发病与炎症相关物质有密切的关系。 目的：分析炎症相关物质在膝骨关节炎发病机制中的作用。 方法：按美国风湿病学分会制定的诊断标准选择膝骨关节炎患者60例,来自因外伤截肢或半月板损伤性手术治疗的患者(排除膝关节内损伤)60例作为对照组,抽取两组患者膝关节液,采用酶联免疫吸附试验方法检测白细胞介素1β、白细胞介素6、白细胞介素8、白细胞介素10、肿瘤坏死因子α、碱性成纤维细胞生长因子、骨桥蛋白水平,采用一氧化氮检测试剂盒检测一氧化氮水平,按TBA荧光法测定过氧化脂质浓度。 结果与结论：膝骨关节炎患者表达高水平白细胞介素1β、白细胞介素6、白细胞介素8、白细胞介素10、肿瘤坏死因子α、碱性成纤维细胞生长因子、骨桥蛋白、一氧化氮和过氧化脂质水平均明显高于对照组;这些细胞因子及一氧化氮、过氧化脂质与膝骨关节炎的病变呈正相关。结果提示这些炎症相关物质确实参与了人膝骨关节炎的发病进程。 中国组织工程研究杂志出版内容重点：组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程全文链接：     

Females with knee osteoarthritis use a detrimental knee loading strategy when squatting

BackgroundThe purpose of this study was to identify sex differences in lower limb kinematics, kinetics, and muscle activation patterns between individuals with osteoarthritis and healthy controls during a two-legged squat.MethodThirty OA (15 females) and 30 healthy (15 females) participants performed three 2-legged squats. Sagittal and frontal plane hip, knee, and ankle kinematics and kinetics were calculated. Two-way ANOVAs (Sex X OA Status) were used to characterize differences in squatting strategies between sexes and between those with and without knee OA.ResultsA greater decrease in sagittal hip, knee, and ankle range of motion and knee joint power was observed in the OA participants compared to the healthy controls. Females with OA had significantly reduced hip and knee adduction angles compared to the healthy females and males with OA. Females also had decreased hip power, hip flexion, and hip adduction moments and knee adduction moments compared to their male counterparts, with the greatest deficits observed in the females with OA. Females with OA also had the highest magnitude of muscle activation for the quadriceps, hamstrings, and gastrocnemius throughout the squat, while males with OA showed increased activation of the vastus lateralis and medial gastrocnemius compared to the healthy males.ConclusionsOA significantly altered biomechanics and neuromuscular control during the squat, with males employing a hip-dominant strategy, allowing them to achieve a greater lower limb range of motion.     

指骨骨密度和膝骨关节炎相关性的影像学评价

背景：骨关节炎和骨质疏松症是与人体衰老相关的两大退行性疾病,国内外针对其相关性的研究较多,但至今仍未得出统一结论。 目的：通过横断面研究探讨影像学膝骨关节炎和指骨骨密度的相关性。 方法：纳入2 855名研究对象,同时测量骨密度和双膝正位片,对潜在的混杂因素进行校正,应用多变量的Logistic回归分析模型来评估影像学膝骨关节炎和指骨骨密度的相关性。 结果与结论：校正因素包括性别、年龄、体质量指数、吸烟、饮酒、总能量摄入量、平均钙摄入量、营养素补充剂和钙补充剂摄入量等,发现影像学膝骨关节炎和指骨骨密度呈正相关。在女性亚组中,这一相关性仍然成立,男性亚组则不具有相关性。证实在女性人群中膝骨关节炎和指骨骨密度的正相关性,提示骨密度可能为膝骨关节炎的保护因素。     

膝骨关节炎全膝关节置换前骨质疏松的相关因素分析

BACKGROUND: The greatest risk of osteoporosis in total knee arthroplasty is perioperative and long-term periprosthetic fractures. However, limited by the traditional concept of osteoarthritis patients who usually not associated with osteoporosis, domestic clinical trials have not given enough attention to the osteoporosis before total knee arthroplasty.      

Stochastic resonance electrical stimulation to improve proprioception in knee osteoarthritis

Proprioceptive deficits occur with knee osteoarthritis (OA) and improving proprioception may slow joint degeneration by allowing more appropriate joint loading. Stochastic resonance (SR) stimulation improves balance and the sensitivity of specific mechanoreceptors. Our purpose was to evaluate the effects of SR electrical stimulation combined with a knee sleeve on proprioception in subjects with knee OA. Joint position sense (JPS) was measured in 38 subjects with knee OA during four conditions in both a partial weight-bearing (PWB) and non weight-bearing (NWB) task: no electrical stimulation/no sleeve, no electrical stimulation/sleeve, 50 μA-RMS stimulation/sleeve, and 75 μA-RMS stimulation/sleeve. Subjects also reported their knee pain, stiffness, functionality (WOMAC), and instability. Repeated measures ANOVA and Spearman correlations were performed to investigate differences between the conditions and relationships among the outcome measures. JPS during the 75 μA-RMS stimulation/sleeve and sleeve alone conditions was significantly improved compared to the control condition in the PWB task. However, the 75 μA-RMS stimulation/sleeve and the sleeve alone conditions did not differ from each other. A moderate correlation was found between the improvements with the 75 μA-RMS stimulation/sleeve condition compared to the JPS of the control condition in the PWB task. No differences in JPS were found between the four conditions in the NWB task. Significant correlations were found between the control JPS and WOMAC indices (p < 0.005). Improved proprioception during the PWB task was achieved with a sleeve alone and in combination with SR stimulation. The observed correlations suggest that subjects with larger proprioceptive deficits may benefit most from these therapies.     

富血小板血浆与透明质酸钠修复兔膝骨关节炎

 背景：研究表明,透明质酸钠可抑制膝骨关节炎对软骨的破坏,加速软骨细胞的再生,达到稳定和修复关节软骨的目的。目的：观察富血小板血浆与透明质酸钠治疗兔膝骨关节炎的疗效。方法：将40只新西兰大白兔随机均分为5组,联合组、玻璃酸钠组、富血小板血浆组与模型组制作右侧膝骨关节炎模型,造模后分别向膝关节腔内注射透明质酸钠联合自体富血小板血浆、玻璃酸钠、自体富血小板血浆与生理盐水进行治疗,1次/周,连续5周;对照组不做任何处理,为正常对照。治疗完成1周后,ELISA法检测血液中白细胞介素1、白细胞介素6、肿瘤坏死因子α水平,光镜下观察关节软骨的变化。结果与结论：与对照组比较,其余4组白细胞介素1、白细胞介素6、肿瘤坏死因子α水平均升高(P < 0.01);联合组、透明质酸钠组、富血小板血浆组白细胞介素1、白细胞介素6、肿瘤坏死因子α水平均低于模型组(P < 0.01或P < 0.05),且以联合组下降最显著。模型组关节软骨破坏明显,联合组、透明质酸钠组、富血小板血浆组关节软骨破坏程度轻于模型组,且以联合组破坏程度最轻。表明透明质酸钠配合自体富血小板血浆关节内注射可降低膝骨关节炎的炎症反应,保护关节软骨,效果优于单一药物注射。中国组织工程研究杂志出版内容重点：生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程     

深蹲的国内外最新生物力学研究进展

高屈曲膝关节活动在亚洲国家的日常生活及某些职业中极为常见。归纳深蹲的总种类及其动作特点,综述近年来有关深蹲的生物力学研究进展,并对离体实验、在体测试和计算机模拟等不同研究方法进行分类阐述。开展膝关节深蹲动作的生物力学研究,有益于建立合理的康复训练和运动风险预防方案,为膝关节假体优化设计提供一定参考建议。     

Provoked anterior knee pain in medial osteoarthritis of the knee

The incidence and the causes of provoked anterior knee pain in medial osteoarthritis (OA) of the knee were investigated clinically and radiographically. A retrospective study was performed in 179 primary osteoarthritic knees of 129 patients. Provocative tests were conducted on the patellofemoral (PF) joint to induce retropatellar crepitation, grating pain, tenderness around the patella, and pain on deviating the patella. The femorotibial angle (FTA) was measured on standing anteroposterior radiographs as a parameter of limb alignment. The widths of the medial and lateral joint space of the PF joint were measured on skyline views of standing or 30, 60 or 90° knee flexion. The angle of flexion contracture was measured on lateral radiographs of knees with maximum extension. The lateral shift and tilt of the patella were measured on standing skyline views. Retropatellar crepitation was found in 70% of knees, while provoked anterior knee pain was observed in 35–45% of knees with medial OA of the knee. Standing FTA was significantly greater in knees with tenderness around the patella and pain on deviating the patella than in those without these symptoms (P<0.05). The angle of flexion contracture was significantly greater in knees with provoked symptoms in the PF joint than in those without symptoms (P<0.05). The degree of lateral shift was greater in knees with provoked symptoms (P<0.05). Flexion contracture and varus deformity of the knee with lateralization of the patella may be factors aggravating provoked PF symptoms in medial OA of the knee. The radiographic assessment in this series failed to show a significant relationship between the width of the PF joint space and the incidence of provoked PF symptoms.     

Muscle strength and exercise intensity adaptation to resistance training in older women with knee osteoarthritis and total knee arthroplasty

OBJECTIVES:

To analyze muscle strength and exercise intensity adaptation to resistance training in older women with knee osteoarthritis and total knee arthroplasty.

METHODS:

Twenty-three community-dwelling women were divided into the following groups: older, with knee osteoarthritis and total knee arthroplasty in the contralateral limb (OKG; N = 7); older, without symptomatic osteoarthritis (OG; N = 8); and young and healthy (YG; N = 8). Muscle strength (1-repetition maximum strength test) and exercise intensity progression (workload increases of 5%–10% were made whenever adaptation occurred) were compared before and after 13 weeks of a twice-weekly progressive resistance-training program.

RESULTS:

At baseline, OKG subjects displayed lower muscle strength than those in both the OG and YG. Among OKG subjects, baseline muscle strength was lower in the osteoarthritic leg than in the total arthroplasty leg. Muscle strength improved significantly during follow-up in all groups; however, greater increases were observed in the osteoarthritic leg than in the total knee arthroplasty leg in OKG subjects. Greater increases were also seen in the osteoarthritic leg of OKG than in OG and YG. The greater muscle strength increase in the osteoarthritic leg reduced the interleg difference in muscle strength in OKG subjects, and resulted in similar posttraining muscle strength between OKG and OG in two of the three exercises analyzed. Greater exercise intensity progression was also observed in OKG subjects than in both OG and YG subjects.

CONCLUSIONS:

OKG subjects displayed greater relative muscle strength increases (osteoarthritic leg) than subjects in the YG, and greater relative exercise intensity progression than subjects in both OG and YG. These results suggest that resistance training is an effective method to counteract the lower-extremity strength deficits reported in older women with knee osteoarthritis and total knee arthroplasty.     

The association of external knee adduction moment with biomechanical variables in osteoarthritis: A systematic review

ContextOsteoarthritis (OA) is a musculoskeletal disorder primarily affecting the older population and resulting in chronic pain and disability. Biomechanical variables, associated with OA severity such as external knee adduction moment (KAM) and joint malalignment, may affect the disease process by altering the bone-on-bone forces during gait.ObjectiveTo investigate the association between biomechanical variables and KAM in knee OA.MethodA systematic search for published studies' titles and abstracts was performed on Ovid Medline^®, Cumulative index to Nursing and Allied Health, PREMEDLINE, EBM reviews and SPORTDiscus. Fourteen studies met the inclusion criteria and were considered for the review.ResultsThe magnitude and time course of KAM during gait appeared to be consistent across laboratories and computational methods. Only two of the included studies that compared patients with OA to a control group reported a higher peak KAM for the OA group. Knee adduction moment increased with OA severity and was directly proportional to varus malalignment. Classifying the patients on the basis of disease severity decreased the group variability, permitting the differences to be more detectable.ConclusionsBiomechanical variables such as varus malalignment are associated with KAM and therefore may affect the disease process. These variables should be taken into considerations when developing therapeutic interventions for individuals suffering from knee OA.     

A novel single-leg squat test with speed and accuracy requirements: Reliability and validity in anterior cruciate ligament reconstructed individuals

BackgroundSome traditional single-leg squat tests focused on number of repetitions may not demand precise control of lower limb dynamic alignment, especially in the frontal and transverse planes. The primary objective of this study was to evaluate test–retest reliability and construct validity of a novel single-leg squat test – the ‘precision-squat test’ (PST) – designed to assess performance under varying task demands that can impact the execution of lower limb movements. A secondary objective was to investigate whether musculoskeletal factors predict performance in the PST in healthy individuals.MethodsThirty healthy participants were assessed to verify test–retest reliability. To verify the test’s construct validity, we compared the performance of 21 anterior cruciate ligament reconstructed (ACLR) individuals and 21 matched controls. Finally, 36 healthy individuals were assessed to verify the musculoskeletal factors related to PST performance. All participants performed the PST: they executed single-leg squats while moving a laser pointer (attached to the thigh) between two targets. We varied target size and distance between targets to manipulate the task difficulty.ResultsReliability of the PST was excellent at all demand levels (intraclass correlation coefficient (ICC)_(3,2) > 0.93). Squat time increased under test conditions involving higher task difficulty (P < 0.001) and in ACLR individuals compared with age-matched controls (P < 0.05). Regression analyses revealed that reduced knee extensors and hip external rotators torques are related to increased squat time (P < 0.05).ConclusionsPST is a valid and reliable tool to assess performance of healthy and ACLR individuals. In addition, hip and knee strength are associated with performance during the test.     

Vitamin D status is associated with inflammatory biomarkers and clinical symptoms in patients with knee osteoarthritis

Background and aimThe association between vitamin D status and osteoarthritis (OA) and bone remodeling has been shown previously. The present study was conducted to determine the association between vitamin D status and inflammatory biomarkers and clinical symptoms in patients with knee OA.MethodsThis case–control study was performed on 124 subjects with mild to moderate knee OA and 65 healthy controls. Demographic data was collected from all participants at baseline. We used Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC Index) for evaluating the severity of clinical symptoms in these patients. Serum levels of vitamin D as well as markers of inflammation including interleukin 1-β (IL-1β), interleukin 6 (IL-6), interleukin 10 (IL-10), tumor necrosis factor-alpha (TNF-α), high-sensitivity C-reactive protein (hs-CRP), and nuclear factor k-B (NF-κB) p65 were evaluated for each participant.ResultsThe results of the present study showed that patients with knee OA had lower levels of vitamin D and higher levels of IL-1β, TNF-α, hs-CRP, and NF-кB p65 compared with healthy controls (P < 0.0001). The levels of IL-1β, TNF-α, and NF-кB p65 in knee OA patients with vitamin D insufficiency were significantly higher compared with the knee OA patients with sufficient vitamin D (P < 0.05). Based on the linear regression analysis, serum vitamin D levels were inversely correlated with IL-1β, TNF-α, hs-CRP, and NF-кB p65 levels (P < 0.0001). Patients with sufficient vitamin D levels had lower total and physical function WOMAC scores compared with patients with vitamin D insufficiency (P = 0.011 and P = 0.010, respectively).ConclusionThe results suggest a strong link between vitamin D deficiency and increased inflammatory biomarkers as well as increased severity of clinical symptoms in knee OA patients.     

Effects of resistance training in older women with knee osteoarthritis and total knee arthroplasty

OBJECTIVES:

This study sought to analyze the effects of resistance training on functional performance, lower-limb loading distribution and balance in older women with total knee arthroplasty (TKA) and osteoarthritis (OA) in the contralateral knee. In addition, this older knee OA and TKA group (OKG) was compared to older (OG) and young women (YG) without musculoskeletal diseases who underwent the same resistance training program.

METHODS:

Twenty-three women divided into OKG (N = 7), OG (N = 8) and YG (N = 8) had their functional performance, lower-limb loading distribution and balance compared before and after 13 weeks of a twice-weekly progressive resistance training program.

RESULTS:

At baseline, the OKG showed lower functional performance and unilateral balance, and impaired lower-limb loading distribution compared to the OG and the YG (p<0.05). After resistance training, the OKG showed improvements in functional performance (∼13% in sit-to-stand and rising from the floor, ∼16% in stair-climbing and ∼23% in 6-minute walking (6 MW)), unilateral balance (∼72% and ∼78% in TKA and OA leg, respectively) and lower-limb loading distribution, which were greater than those observed in the OG and the YG. The OKG showed post-training 6 MW performance similar to that of the OG at baseline. Sit-to-stand performance and unilateral stand balance were further restored to post-training levels of the OG and to baseline levels of the YG.

CONCLUSIONS:

Resistance training partially restored functional, balance and lower-limb loading deficits in older women with TKA and OA in the contralateral knee. These results suggest that resistance training may be an important tool to counteract mobility impairments commonly found in this population.     

Evidence based factors influencing outcome of arthroscopy in osteoarthritis of the knee

Arthroscopy continues to be widely used in the management of knee osteoarthritis despite concerns regarding its effectiveness. The Scottish Arthroplasty Project has demonstrated a three-fold variation in rates of arthroscopy for osteoarthritis of the knee across different regions of Scotland. This has clear ramifications for the utilisation of finite health care resources. In light of such variations in national clinical practice this review identifies the evidence based factors which permit identification of patients who will obtain sustained benefit from arthroscopic treatment of knee osteoarthritis. Such a patient should have symptoms of short duration affecting the medial compartment of the knee, have localised tenderness at the medial joint line, mechanical symptoms and positive findings on meniscal stress testing. There should be neither significant mechanical malalignment nor flexion contracture, there should be preservation of the joint space on radiographs and the patient should not be obese. If these criteria are fulfilled the likelihood for long lasting reduction in symptoms is increased.     

Analysis of characteristics required for gait evaluation of patients with knee osteoarthritis using a wireless accelerometer

BackgroundKnee osteoarthritis (KOA) is associated with reduced quality of life due to knee pain and gait disturbance. However, the evaluation of KOA is mainly based on images and patient-reported outcome measures (PROMs), which are said to be insufficient for functional evaluation. Recently, gait analysis using an accelerometer has been used for functional evaluation of KOA patients. Nevertheless, evaluation of the entire body motion is insufficient. The aim of this study was to clarify the gait characteristics of KOA patients using the distribution of scalar products and the interval time of heel contact during spontaneous walking and to compare them with healthy subjects.MethodsParticipants wore a three-axis accelerometer sensor on the third lumbar vertebra and walked for 6 min on a flat path at a free walking speed. The sum of a composite vector (CV) scalar product and a histogram for distribution were used for body motion evaluation. The CV consisted of a synthesis of acceleration data from three axes. In addition to the summation of the CV, a histogram can be created to evaluate in detail the magnitude of the waves. The amount of variation was measured in the left–right and front–back directions. Variability was evaluated from the distribution of heel contact duration between both feet measured from the vertical acceleration.ResultsKOA patients showed a smaller sum of CV that converged to small acceleration in the distribution when compared with healthy subjects. In the KOA group, the amount of variation in the forward and backward directions was greater than that in the forward direction. The variability of heel–ground interval time was greater in the KOA group than in healthy subjects.ConclusionKOA patients walked with less overall body movement, with limited movable range of the knee joint and pain-avoiding motion. The gait of the KOA group was considered unstable, with long time intervals between peaks. The increase in the amount of forward variation was thought to be due to the effect of trunk forward bending during walking. The clinical relevance of this study is that it was possible to evaluate KOA patients’ gait quantitatively and qualitatively.     

Manual for guided home exercises for osteoarthritis of the knee

INTRODUCTION:

Physiotherapy is one of the most important components of therapy for osteoarthritis of the knee. The objective of this prospective case series was to assess the efficiency of a guidance manual for patients with osteoarthritis of the knee in relation to pain, range of movement , muscle strength and function, active goniometry, manual strength test and function.

METHODS:

Thirty-eight adults with osteoarthritis of the knee (≥ 45 years old) who were referred to the physiotherapy service at the university hospital (Santa Casa de Misericórdia de São Paulo) were studied. Patients received guidance for the practice of specific physical exercises and a manual with instructions on how to perform the exercises at home. They were evaluated for pain, range of movement, muscle strength and function. These evaluations were performed before they received the manual and three months later. Patients were seen monthly regarding improvements in their exercising abilities.

RESULTS:

The program was effective for improving muscle strength, controlling pain, maintaining range of movement of the knee joint, and reducing functional incapacity.

DISCUSSION:

A review of the literature showed that there are numerous clinical benefits to the regular practice of physical therapy exercises by patients with osteoarthritis of the knee(s) in a program with appropriate guidance. This study shows that this guidance can be attained at home with the use of a proper manual.

CONCLUSIONS:

Even when performed at home without constant supervision, the use of the printed manual for orientation makes the exercises for osteoarthritis of the knee beneficial.     

80岁以上高龄膝关节骨关节炎应用单髁关节置换治疗的临床研究

目的探讨单髁关节置换治疗80岁以上高龄膝关节骨关节炎的手术风险及手术疗效。方法回顾性分析我院2003年1月~2014年6月收治的29例31膝经单髁关节置换治疗的80岁以上高龄膝关节骨关节炎患者的资料。平均年龄(83.4±2.8)岁(80~93岁)。对患者合并疾病、膝关节疼痛、活动度、评分、影像学及手术并发症等进行评估分析,分析单髁关节置换治疗高龄膝关节骨关节炎的临床效果,手术风险及应对方法。结果术后平均随访(25.2±15.0)月(6~59月)。失访1例(1膝),1例(1膝)因非手术相关疾病死亡。围手术期无病例死亡。术后住院时间为(7.0±1.3)天(5~8天)。术后心脏病事件发生1例,血糖波动1例,尿潴留1例。术后血红蛋白(112.7±10.8)g/L,平均较术前下降(14.0±6.9)g/L,输血1例。术后膝关节活动度平均(116.6±8.1)°,与术前活动度相比有统计学差异(0.05)。VAS评分由术前(6.9±0.8)分降至(2.0±0.9)分(0.05)。HSS评分由术前(52.4±10.3)分增至(89.4±4.9)分(0.05)。所有病例无返修、感染、肺栓塞、创伤后精神障碍等并发症发生。结论对于80岁以上高龄膝关节骨关节炎患者,准确手术评估,恰当围手术期处理,选择微创单髁关节置换治疗,不仅有效,而且安全可行。