Gait and clinical measurements in patients with knee osteoarthritis after surgery: a prospective 5-year follow-up study

The aim of this prospective follow-up study was to determine if gait measurements and/or clinical measurements could detect differences in treatment outcome between two surgical interventions in patients with knee osteoarthritis (OA). The patients were followed for 5 years after surgery. Forty patients, 55-70 years of age, with unilateral knee OA were included. The patients were treated either with a high tibial osteotomy (HTO) (n=18) or a unicompartmental knee arthroplasty (UKA) (n=22). Clinical outcome measures were the British Orthopaedic Association (BOA) score, pain during walking, passive range of knee motion (PROM) and patients' subjective opinion. The gait variables were free walking speed, step frequency, step length and single and double-stance phase for each leg. The patients were examined before surgery and 3 months, 1 year and 5 years after surgery. The time-distance variables of gait could detect differences in treatment outcome, 3 months after surgery, while the clinical outcome measures, as given here, could not detect any differences between the two groups of patients. Measurements of free walking speed could be recommended for clinical evaluation, after surgical interventions, in patients with knee OA.     

Dynamic ultrasonography of the medial meniscus during walking in knee osteoarthritis

BackgroundMedial meniscal extrusion (MME) is a risk factor for the progression of knee osteoarthritis (OA). MME evaluation is crucial and it is commonly performed using magnetic resonance imaging (MRI) or static ultrasonography. We developed a prototype flat-shaped ultrasound transducer to visualize the actual meniscal movements during walking.ObjectiveThe aim of this study was to investigate whether it is feasible to visualize and evaluate the meniscal movements during walking using the novel flat-shaped ultrasound transducer for dynamic ultrasonography.MethodsSix participants who were diagnosed with primary unilateral or bilateral tibiofemoral knee OA on radiography (mean age, 67.1 ± 9.9 years; males/females, 4/2) and six healthy volunteers without any symptoms in their knees (mean age, 26.3 ± 4.0 years; males/females, 4/2) were enrolled in this study. The movement of the medial meniscus during walking was visualized using the novel transducer and the gait motion was recorded as video images that were synchronized with the ultrasonogram. MME and ΔMME (the difference between the minimum and maximum MME during the stance phase of the gait cycle) were evaluated in those with OA and compared with those in healthy volunteers.ResultsIn both groups, MME was visualized clearly in the stance phase. The mean values of MME and ΔMME in the knee OA group were significantly greater than those in the control group (P < .01).ConclusionsDynamic meniscal movement during gait can be evaluated with the specially developed novel ultrasound transducer. Our approach will be helpful in unveiling unknown pathological mechanisms in knee OA.     

Simultaneous bilateral unicompartmental knee replacement improves gait parameters in patients with bilateral knee osteoarthritis

BackgroundUnicompartmental knee replacement (UKR) can provide reliable clinical and functional outcomes when performed simultaneously in both knees for treating bilateral osteoarthritis (OA). No studies to date have evaluated gait pattern after simultaneous bilateral UKR. The aim of this study was to evaluate changes in gait variables after bilateral single-stage UKR (B-UKR) and to compare them with the outcomes after unilateral UKR in two other groups of patients: one with bilateral knee OA (P-UKR) and one with the contralateral knee unaffected (H-UKR).MethodsThree-dimensional motion cohort data were prospectively collected before and six months after surgery; 37 were allocated to the B-UKR (n = 13), P-UKR (n = 12) or H-UKR (n = 12) group. Spatiotemporal variables (stride length, gait speed, gait cadence, stance phase, swing phase, and double support phase) and kinematic parameters (knee flexion and extension peak values, knee range of motion (ROM), and hip abduction peak value) were analyzed using mixed analysis of variance (ANOVA). The magnitude of effect for significant outcomes (ES) was determined using Cohen's d.ResultsPostoperative improvement in gait cadence (P < 0.01; ES = 1.20), walking speed (P < 0.05; ES = 0.58), stride length (P < 0.05; ES = 0.67), knee ROM (P < 0.05; ES = 0.89), knee flexion (P < 0.05; ES = 0.94), and hip abduction (P < 0.001; ES = 1.16) was noted for the B-UKR group, whereas only stride length improved (P < 0.05; ES = 0.48) for the H-UKR group, and no changes in any gait parameter were seen for the P-UKR group.ConclusionsPostoperative improvement in gait parameters was observed in the B-UKR patients with bilateral OA. Whenever possible, simultaneous bilateral UKR should be considered in such patients.     

Increased joint loads during walking--a consequence of pain relief in knee osteoarthritis

Joint pain is a primary symptom in knee osteoarthritis (OA), but the effect of pain and pain relief on the knee joint mechanics of walking is not clear. In this study, the effects of local knee joint analgesia on knee joint loads during walking were studied in a group of knee osteoarthritis patients. A group of healthy subjects was included as a reference group. The joint loads were calculated from standard gait analysis data obtained with standardised walking speed (4 km/h). The gait analyses were performed before and after pain relief by intra-articular injections of 10 mL lidocaine (1%). Pre-injection measurements revealed lower joint loads in the OA group compared to the reference group. Following injections pain during walking decreased significantly and the joint loads increased in the OA group during the late single support phase to a level comparable to the reference group. Although the patients walked with less compressive knee joint forces compared to the reference group, the effects of pain relief may accelerate the degenerative changes.     

Predicting dynamic knee joint load with clinical measures in people with medial knee osteoarthritis

Knee joint loading, as measured by the knee adduction moment (KAM), has been implicated in the pathogenesis of knee osteoarthritis (OA). Given that the KAM can only currently be accurately measured in the laboratory setting with sophisticated and expensive equipment, its utility in the clinical setting is limited. This study aimed to determine the ability of a combination of four clinical measures to predict KAM values.Three-dimensional motion analysis was used to calculate the peak KAM at a self-selected walking speed in 47 consecutive individuals with medial compartment knee OA and varus malalignment. Clinical predictors included: body mass; tibial angle measured using an inclinometer; walking speed; and visually observed trunk lean toward the affected limb during the stance phase of walking. Multiple linear regression was performed to predict KAM magnitudes using the four clinical measures. A regression model including body mass (41% explained variance), tibial angle (17% explained variance), and walking speed (9% explained variance) explained a total of 67% of variance in the peak KAM.Our study demonstrates that a set of measures easily obtained in the clinical setting (body mass, tibial alignment, and walking speed) can help predict the KAM in people with medial knee OA. Identifying those patients who are more likely to experience high medial knee loads could assist clinicians in deciding whether load-modifying interventions may be appropriate for patients, whilst repeated assessment of joint load could provide a mechanism to monitor disease progression or success of treatment.     

Loading and gait symmetry during level and stair walking in asymptomatic subjects with knee osteoarthritis: Importance of quadriceps femoris in reducing impact force during heel strike?

Repetitive impulsive forces during walking are claimed to result in joint osteoarthritis (OA). The aim of this study was to investigate impact loading and gait symmetry during level and stair walking in asymptomatic elderly subjects with knee OA. It was hypothesised that pre-activity of the quadriceps femoris muscle (QF) would be an important factor reducing impulsive loading when walking on level ground. Subjects [21 female, six men, 66.2 (7.6) years] were studied. The subjects had no knee pain or diminished functional capacity, but showed radiographically light or moderate bilateral knee OA changes. Ground reaction forces (GRFs), plantar pressure distribution, muscle activation pattern [vastus medialis (VM), vastus lateralis, biceps femoris and gastrocnemius medialis] and asymmetry during level walking and stair walking were evaluated. Almost 20% of subjects had a distinct heel-strike transient at maximal speed with lower pre-activity of VM (P<0.05). The most forceful maximum vertical GRF in the braking phase occurred in stair descent [1.52 (0.21) BW]. This was 32.5% (P<0.001) higher than seen when walking on the level at normal speed. The loading rate of stair descent [10.87 (2.96) BW/s] was significantly stronger (P<0.05) than in level walking at normal speed [8.55 (1.93) BW/s]. There was no asymmetry in kinematic or kinetic variables in level walking. However, asymmetry increased during stair walking. The control of quadriceps femoris prior to heel-strike is possibly an important factor that reduces impulsive loading during walking in asymptomatic OA subjects. Stair walking is a demanding motor task and the musculoskeletal system is loaded more during stair descent than level walking at normal speed.     

Asymmetric knee loading at heel contact during walking in patients with unilateral knee replacement

Increased load on the knee joint by excessive levels of impact forces during initial contact has been suggested to lead to knee osteoarthritis (OA). Asymmetric loading after knee replacement may also relate to the development of OA in the contralateral limb, therefore this study investigated the heel strike transient vertical force and subsequent lower extremity kinematic, kinetic and spatio-temporal parameters during level walking between the operated and the contralateral limbs in patients 12 months following unilateral knee replacement. A six camera motion analysis system with a force plate was used to investigate the differences between limbs in the heel strike transient vertical GRF and its relative timing, and hip, knee and ankle angles and moments at initial contact, as well as spatio-temporal parameters during the stance phase of walking in 19 subjects with unilateral knee replacement. Paired t tests showed a significant difference in the contralateral limb relative to the operated limb in the heel strike transient magnitude (p=0.03), hip moment (p=0.01), knee moment (p=0.02) and ankle moment (p=0.03). No significant differences were found for the joint angles at heel contact or the spatio-temporal parameters (p>0.05). The heel strike transient magnitude was lower for the operated limb with no differences in the spatio-temporal parameters or the joint angles at initial contact between the limbs. Differences in the hip, knee and ankle moments were also found indicating an asymmetric loading of the impact force at initial contact on the lower extremity. The current findings may indicate an asymmetric loading on the knee joint and therefore may be clinically relevant in patients undergoing unilateral knee replacement.     

Energy expenditure during cane-assisted gait in patients with knee osteoarthritis

OBJECTIVE: To compare the energy expenditure in patients with unilateral knee osteoarthritis while walking with canes of different lengths. METHODS: A quasi-experimental study (single-group) was carried out on thirty patients with unilateral knee osteoarthritis. An adjustable aluminum cane was used, and three different cane lengths were determined for each subject: C1--length from the floor to the greater trochanter; C2--length from the floor to the distal wrist crease; and C3--length obtained by the formula: height x 0.45 + 0.87 m. Resting and walking heart rates were measured with a Polar hear rate meter. Walking speed was calculated by the time required for the patient to walk 10 m. Gait energy cost was estimated using the physiological cost index, and results were compared. RESULTS: The sample consisted of 25 women and five men (average age of 68 years). Statistically significant differences in physiological cost index measurements were observed between unassisted walking and assisted walking with a cane of any length (p<0.001), as well as between walking with a C2-length cane and unassisted walking, and walking with a C1-length cane and walking with a C3-length cane (p=0.001; p = 0.037; p=0.001; respectively). CONCLUSION: These data demonstrate that small alterations in the length of canes used for weight-bearing ambulation in patients with unilateral knee osteoarthritis increase the energy expenditure measured by the physiological cost index during walking. Further studies are needed for a more precise quantification of the increase in energy expenditure during cane-assisted gait and an assessment of the effectiveness of cane use in relieving pain and improving function in patients with knee osteoarthritis.     

Effects of severity of degeneration on gait patterns in patients with medial knee osteoarthritis

This study tested the hypothesis that patients with mild and severe medial knee osteoarthritis (OA) adopt different compensatory gait patterns to unload the deseased knee, in not only the frontal plane but also the sagittal plane. Fifteen patients with mild and 15 with severe bilateral medial knee OA, and 15 normal controls walked while the kinematic and kinetic data were measured. Compared to the normal group, both OA groups had significantly greater pelvic anterior tilt, swing-pelvis list, smaller standing knee abduction, as well as smaller standing hip flexor and knee extensor moments during stance. The severe group also had greater hip abduction, knee extension and ankle plantarflexion. The mild group successfully reduced the extensor moment and maintained normal abductor moment at the diseased knee mainly through listing and anterior tilting the pelvis. With extra compensatory changes at other joints and increased hip abductor moment, the severe group successfully reduced the knee extensor moment but failed to reduce the abductor moment. These results suggest that, apart from training of the knee muscles, training of the hip muscles and pelvic control are essential in the rehabilitative intervention of patients with knee OA, especially for more severe patients.     

同时双侧全膝表面置换与单侧全膝关节置换围手术期康复的比较

背景：目前对于双膝严重骨性关节炎行两组同时双侧全膝表面置换的围手术期康复的相关研究尚不多见。 目的：比较双膝骨性关节炎两组同时双侧全膝表面置换术与单侧全膝关节置换围手术期康复训练的效果。 方法：两组医生对59例(118膝)患者双膝骨性关节炎同台同时全膝表面置换,与同期80例单膝骨性关节炎行单侧全膝关节置换患者(对照组)进行疗效比较。两组患者置换前均进行康复教育及预备康复,置换后康复方法标准一致。 结果与结论：同时双侧全膝表面置换组置换前通过压腿平均减小屈曲畸形角度11.2°(5°~22°)。置换后3~6周,股四头肌、腘绳肌肌力5级,较置换前平均增加0.8级;平均ROM≥95°(110±15) °;无痛行走500 m以上;独自无痛上下10级楼梯,无肿胀;出院时HSS评分较置换前增加。置换后3个月没有发现松动表现及不良反应,其康复疗效与对照组对比差异无显著性意义。表明,在围手术期对双膝骨性关节炎两组医生行同时双侧全膝表面置换,通过系统而量化的康复,有利于减少置换中截骨量和置换后并发症,促进患者膝关节功能恢复,与单侧全膝关节置换相比康复结果无明显差异。     

利用步态分析研究楔形鞋垫对膝关节载荷的影响

目的研究足底不同位置的楔形鞋垫对膝关节承载及运动特征的影响。方法利用三维动捕捉系统与测力台对10名健康成年女性受试者步态中的关节动力学变化特点进行分析研究。实验状态分为对照组和6组楔形鞋垫测试组。利用单因素方差分析评价楔形足底支撑对膝关节动力学参数的影响。结果相对于对照组,前内侧楔形鞋垫组显著减小了膝内翻力矩第1峰值(P<0.05);使用前外侧楔形鞋垫和外侧全长楔形鞋垫的两组显著减小了膝内翻力矩第2峰值(P<0.05,P<0.05)。结论使用楔形鞋垫可有效地减小站立相的膝关节内翻力矩,这将有助于设计适合的鞋垫以减轻由骨性关节炎所带来的疼痛。     

Gait-related self-efficacy is directly associated with daily step counts in individuals with knee osteoarthritis

BackgroundIn addition to physical factors, psychological factors such as self-efficacy (SE) reportedly affect physical activity (PA) levels in individuals with knee osteoarthritis (OA). However, the relationship between PA and SE for walking tasks in patients with knee OA remains unclear. The present study aimed to investigate the direct and indirect pathways of SE for walking tasks and the influence of previously reported factors on PA level in individuals with knee OA.MethodsA cross-sectional design was employed. Eighty-five individuals with knee OA were enrolled. The daily step count (Steps) was considered an objective level of PA. The SE for the walking task was assessed using a modified Gait Efficacy Scale (mGES). Data on gait speed (GS), the visual analog scale (VAS) score for knee pain, Kellgren–Lawrence (K–L) grade of radiographic severity of knee OA, age, and body mass index were collected. Path analysis was performed to investigate the direct and indirect effects of these variables on Steps.ResultsAfter exclusion, 70 participants were included. The alternative model, which included Steps, mGES, GS, VAS, K–L grade, and age, showed a good fit. mGES and age had a direct effect on Steps (standardized path coefficients: 0.337 and −0.542, respectively), while the other variables had indirect effects.ConclusionsThe SE for walking tasks was directly associated with Steps representative of the PA level. This finding suggests that SE for the walking task may be important in improving PA levels in individuals with knee OA.     

Reductions in peak knee abduction moment in three previously studied gait modification strategies

BackgroundFirst peak internal knee abduction moment (KAM) has been associated with knee osteoarthritis. Gait modification including trunk lean, medial knee thrust, and toe-in gait have shown to reduce KAM. Due to heterogeneity between study designs, it remains unclear which strategy is most effective. We compared the effects of these modifications in healthy individuals to determine their effectiveness to reduce KAM, internal knee extension moment (KEM), and medial contact force (MCF).MethodsTwenty healthy individuals volunteered for this study (26.7 ± 4.7 years, 1.75 ± 0.1 m, 73.4 ± 12.4 kg). Using real-time biofeedback, we collected 10 trials for each modification using individualized gait parameters based on participants' baseline mean and standard deviation (SD). Two sizes of each modification were tested: 1–3 SD greater (toe-in and trunk lean) or lesser (knee adduction) than baseline for the first five trials and 3–5 SD greater or lesser than baseline for the last five trials.ResultsA significant main effect was found for KAM and KEM (p < .001). All modifications reduced KAM from baseline by at least five percent; however, only medial knee thrust and small trunk lean resulted in significant KAM reductions. Only medial knee thrust reduced KEM from baseline. MCF was unchanged. Conclusion: Medial knee thrust was superior to trunk lean and toe-in modifications in reducing KAM. Subsequent increases in KEM and variation in individual responses to modification suggests that future interventions should be individualized by type and magnitude to optimize KAM reductions and avoid detrimental effects.     

Influence of the instrumented force shoe on gait pattern in patients with osteoarthritis of the knee

Osteoarthritis (OA) of the knee is associated with alterations in gait. As an alternative to force plates, instrumented force shoes (IFSs) can be used to measure ground reaction forces. This study evaluated the influence of IFS on gait pattern in patients with knee OA. Twenty patients with knee OA walked in a gait laboratory on IFS and control shoes (CSs). An optoelectronic system and force plate were used to perform 3D gait analyses. A comparison of temporal-spatial gait parameters, kinematics, and kinetics was made between IFS and CS. Patients wearing IFS showed a decrease in walking velocity and cadence (8%), unchanged stride length, an increase in stance time (13%), stride time (11%) and step width (14%). No differences were found in knee adduction moment or knee kinematics. Small differences were found in foot and ankle kinematics (2–5°), knee transverse moments (5%), ankle frontal (3%) and sagittal moments (1%) and ground reaction force (1–6%). The gait of patients with knee OA was only mildly influenced by the IFS, due to increased shoe height and weight and a change in sole stiffness. The changes were small compared to normal variation and clinically relevant differences. Importantly, in OA patients no effect was found on the knee adduction moment.     

The knee adduction angle of the osteo-arthritic knee: A comparison of 3D supine,static and dynamic alignment

BackgroundEnd-stage knee osteoarthritis (OA) commonly results in knee arthroplasty. Three dimensional (3D) supine imaging is often used for pre-operative planning to optimise post-operative knee adduction angles (KAA). However, supine imaging may not represent loaded knee alignment. The aim of this study was to investigate differences in knee alignment under supine, static and dynamic conditions in healthy subjects and subjects with knee OA.MethodsNine healthy subjects and 15 subjects with end-stage knee OA were recruited. All subjects underwent supine imaging and motion capture during gait. KAAs were calculated from supine images (SUPINE), upright standing (STATIC) and at the first peak ground reaction force during gait (DYNAMIC), and were compared.ResultsKAAs were significantly higher (more varus) during gait compared with static (loaded and unloaded) in healthy subjects (p < 0.01) but not in subjects with knee OA. There was a good correlation between SUPINE and DYNAMIC for both healthy and OA subjects (R² > 0.58), with differences in the two relationships; healthy knees had a higher KAA during gait for any given KAA in the supine position, whereas OA knees that were valgus in imaging became more valgus during gait, and the opposite occurred for varus knees.ConclusionsFactors that may contribute to the noted differences between healthy and OA subjects include morphological changes in the joint as a result of OA, and gait compensation strategies in people with end-stage OA. Dynamic 3D motion capture provides important information about functional alignment that is not provided by supine imaging or static motion capture.Clinical RelevanceGait analysis may provide useful information to the surgeon during surgical planning of knee arthroplasties.     

双膝骨性关节炎患者未行二期膝关节置换的影响因素

背景：双膝骨性关节炎患者,做单侧置换后,很大一部分患者未作二次对侧置换,有很多影响因素。 目的：双膝骨性关节炎患者一期选择性单侧全膝关节置换后未行二期对侧膝关节置换的影响因素分析。 方法：纳入初次一期单侧全膝关节置换的双膝骨性关节炎患者28例28膝,假体均采用施乐辉公司普通型,所有患者一期单侧全膝关节置换后1年内未行二期对侧膝关节置换。记录置换前后HSS评分、膝关节活动范围;同时对28例患者未行二期膝关节置换影响因素进行问卷调查。 结果与结论：2例失访,2例在外院行对侧膝关节置换,最终随访24例24膝,平均随访12.6个月(12-19个月)。膝关节活动范围与HSS评分置换后与置换前比较均显著增加,差异有显著性意义(P =0.007,P =0.409)。问卷调查分析影响患者选择二期手术因素,单因素随访结果围手术期疼痛是主因占到95%以上;多因素随访结果：围手术期的疼痛占95.8%,心理因素占87.5%,医院的软件条件占70.8%,3项原因平均占总因素的84.7%。说明24例24膝未行二期膝关节置换影响因素中置换后围手术期的疼痛、患者的心理因素及医院的软件条件占据主导地位。     

Association between in vivo knee kinematics during gait and the severity of knee osteoarthritis

BackgroundOsteoarthritis patients may exhibit different kinematics according to the disease stage. However, changes in the frontal and horizontal planes in each stage remain unclear. The purpose of this study was to investigate changes in the knee kinematic gait variables of osteoarthritis patients, including the frontal and horizontal planes, with respect to the severity of the disease.MethodsForty-five patients with knee osteoarthritis and 13 healthy young subjects were recruited for the experiment. All subjects were examined while walking on a 10-m walkway at a self-selected speed. In each trial, we calculated the angular displacements of flexion/extension, abduction/adduction, and external/internal tibial rotation. We also measured muscle strength, range of motion (ROM), and alignment. We compared the differences in osteoarthritis severity and knee kinematic variables between osteoarthritis patients and normal subjects.ResultsThe flexion angle at the time of foot contact was significantly less in patients with severe and moderate osteoarthritis than in normal subjects (both p < 0.01). The abduction angle at the 50% stance phase was significantly less in patients with severe osteoarthritis than in normal subjects (p < 0.05). The excursion of axial tibial rotation was significantly less in patients with early osteoarthritis than in normal subjects (p < 0.05).ConclusionOsteoarthritis patients had different knee kinematics during gait, depending on the progress of osteoarthritis. Early-stage patients exhibit decreased axial tibial rotation excursion, while severe-stage patient exhibit increased knee adduction.     

Relationship between kinematic gait parameters during three gait modifications designed to reduce peak knee abduction moment

PurposeGait modifications designed to change a single kinematic parameter have reduced first peak internal knee abduction moment (PKAM). Prior research suggests unintended temporospatial and kinematic changes occur naturally while performing these modifications. We aimed to investigate i) the concomitant kinematic and temporospatial changes and ii) the relationship between gait parameters during three gait modifications (toe-in, medial knee thrust, and trunk lean gait).MethodsUsing visual real-time biofeedback, we collected 10 trials for each modification using individualized target gait parameters based on participants’ baseline mean and standard deviation. Repeated measures ANOVA was performed to determine significant differences between conditions. Mixed effects linear regression models were then used to estimate the linear relationships among variables during each gait modification. All modifications reduced KAM by at least 5%.ResultsModifications resulted in numerous secondary changes between conditions such as increased knee abduction during toe-in gait and increased knee flexion with medial knee thrust. Within gait modifications, relationships between kinematic parameters were similar for toe-in gait and medial knee thrust (i.e. increased toe-in and decreased knee abduction), while increased trunk lean showed no relationship with any other kinematic parameters during trunk lean trials.ConclusionTwo main mechanisms were found as a result of this investigation; the first being a pattern of toeing-in, knee abduction, flexion, and internal hip rotation, while trunk lean modification presented as a separate gait pattern with limited secondary changes. Future studies should consider providing feedback on multiple linked parameters, as it may feel more natural and optimize KAM reductions.     

同期双侧全膝关节置换与选择性单侧全膝关节置换后的早期功能恢复

背景：同期双侧全膝关节置换与选择性单侧全膝关节置换后的早期功能恢复一直存在着争议。 目的：评价双膝骨关节炎患者同期双侧全膝关节置换与选择性单侧全膝关节置换后功能恢复情况的差异。 方法：根据置换方案将初次行全膝关节置换的双膝骨关节炎患者86例(116膝)分为两组,双膝组(n=29,58膝)行同期双侧全膝关节置换,单膝组(n =57,57膝)行单侧全膝关节置换。分别对两组患者置换前后的关节活动度、屈曲挛缩度、肌力、疼痛评分、双下肢不等长及HSS评分进行比较分析,并记录并发症的发生率。 结果与结论：置换后1年随访,两组患者置换后关节活动度和肌力差异无显著性意义(P=0.171,0.418);置换后屈曲挛缩度、疼痛评分及双下肢不等长双膝组均显著低于单膝组(P=0.006,0.0013,0.026);同时双膝组置换后HSS评分优于单膝组(P=0.003)。提示同期双侧全膝关节置换患者在屈曲挛缩度、疼痛症状评分、双下肢不等长及HSS评分方面优于单侧全膝关节置换,而两种方案在置换后关节活动度和下肢肌力方面无明显差异。     

胫骨高位双平面上行截骨与下行截骨治疗内翻型膝关节骨性关节炎效果及步态分析

目的 探讨胫骨高位双平面上行截骨与下行截骨治疗内翻型膝关节骨性关节炎的效果及步态分析.方法 遴选出2017年1月至2019年6月因内翻型膝关节骨性关节炎住院患者32例,按手术方式分为胫骨高位双平面上行截骨组和下行截骨组,以观察两组患者的膝关节HSS评分、VAS评分、胫股角(FTA)、胫骨后倾角、Insall-Salva...