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1.
Sagittal plane walking patterns are related to MRI changes over 18‐months in people with and without mild‐moderate hip osteoarthritis
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Deepak Kumar Cory Wyatt Sonia Lee Narihiro Okazaki Ko Chiba Thomas M. Link Richard B. Souza Sharmila Majumdar 《Journal of orthopaedic research》2018,36(5):1472-1477
2.
Changes in the total knee joint moment in patients with medial compartment knee osteoarthritis over 5 years
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Jessica L. Asay Jennifer C. Erhart‐Hledik Thomas P. Andriacchi 《Journal of orthopaedic research》2018,36(9):2373-2379
3.
The effect of different types of insoles or shoe modifications on medial loading of the knee in persons with medial knee osteoarthritis: a randomised trial
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Richard K. Jones Graham J. Chapman Matthew J. Parkes Laura. Forsythe David T. Felson 《Journal of orthopaedic research》2015,33(11):1646-1654
Many conservative treatments exist for medial knee osteoarthritis (OA) which aims to reduce the external knee adduction moment (EKAM). The objective of this study was to determine the difference between different shoes and lateral wedge insoles on EKAM, knee adduction angular impulse (KAAI), external knee flexion moment, pain, and comfort when walking in individuals with medial knee OA. Seventy individuals with medial knee OA underwent three‐dimensional walking gait analysis in five conditions (barefoot, control shoe, typical wedge, supported wedge, and mobility shoe) with pain and comfort recorded concurrently. The change in EKAM, KAAI, external knee flexion moment, pain, and comfort were assessed using multiple linear regressions and pairwise comparisons. Compared with the control shoe, lateral wedge insoles and barefoot walking significantly reduced early stance EKAM and KAAI. The mobility shoe showed no effect. A significant reduction in latter stance EKAM was seen in the lateral wedge insoles compared to the other conditions, with only the barefoot condition reducing the external knee flexion moment. However, the mobility shoe showed significant immediate knee pain reduction and improved comfort scores. Different lateral wedge insoles show comparable reductions in medial knee loading and in our study, the mobility shoe did not affect medial loading. © 2015 The Authors. Journal of Orthopaedic Research Published by Wiley Periodicals, Inc. J Orthop Res 33:1646–1654, 2015. 相似文献
4.
The purpose of this study was to examine interlimb differences in gait kinematics and kinetics in patients with symptomatic medial knee OA. The main objective was to identify hip joint movement strategies that might lower the knee adduction moment and also compensate for decreased knee flexion during weight acceptance. Gait analysis was performed on 32 patients with moderate medial compartment knee OA. Kinetic and kinematic data were calculated and side‐to‐side comparisons made. Radiographs were used to identify frontal plane alignment. No interlimb difference in the peak knee adduction moment was found (p = 0.512), whereas a greatly reduced hip adduction moment was seen on the involved side (p < 0.001) during the early part of stance. The involved limb flexed significantly less and hip and knee flexion moments were smaller compared to the uninvolved side. Gait adaptations involving a lateral sway of the trunk may successfully lead to relatively lower ipsilateral knee adduction moments, and would further be reflected by a lower adduction moment at the hip. Subjects did not compensate for less knee flexion by any dynamic means, and likely experience a resulting higher joint impact. These gait adaptations may have implications with respect to development of weakness of the ipsilateral hip musculature and progression of multiarticular OA. © 2008 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 27:78–83, 2009 相似文献
5.
Ali H. Alnahdi Joseph A. Zeni Lynn Snyder‐Mackler 《Journal of orthopaedic research》2011,29(5):647-652
After unilateral total knee arthroplasty (TKA), osteoarthritis (OA) in the non‐operated knee often progresses. The altered gait mechanics exhibited by patients after TKA increase the loading on the non‐operated knee and predispose it to disease progression. Therefore, our objective was to examine the potentially detrimental changes in frontal plane kinetics and kinematics during walking in patients who underwent unilateral TKA. Thirty‐one subjects 6 months after TKA, 24 subjects 1 year after unilateral TKA, and 20 control subjects were recruited. All subjects underwent 3D gait analysis. In the TKA groups, the non‐operated knee had a higher adduction angle and higher dynamic loading, knee adduction moment and impulse, compared to the operated knee. This increased loading may be an underlying reason for OA progression in the non‐operated knee. Measures of loading in the control knee did not differ from that of the non‐operated knee in the TKA group, but the TKA group walked with shorter step length. While the non‐operated knee loading was not different from controls, there may be greater risk of cumulative loading in the non‐operated knee of the TKA group given the shorter step length. © 2010 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 29:647–652, 2011 相似文献
6.
Longitudinal changes in knee gait mechanics between 2 and 8 years after anterior cruciate ligament reconstruction
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Jennifer C. Erhart‐Hledik Constance R. Chu Jessica L. Asay Thomas P. Andriacchi 《Journal of orthopaedic research》2018,36(5):1478-1486
7.
Janie L. Astephen Kevin J. Deluzio Graham E. Caldwell Michael J. Dunbar 《Journal of orthopaedic research》2008,26(3):332-341
Mechanical factors have been implicated in the progression of knee osteoarthritis (OA). Understanding how these factors change as the condition progresses would elucidate their role and help in developing interventions that could delay the progress of knee OA. In this cross‐sectional study, we identified kinematic and kinetic variables at the hip, knee, and ankle joints that change between three clinically distinct levels of knee OA disease severity: asymptomatic, moderate OA, and severe OA. The severity level was based on a combined radiographic/symptomatic clinical decision for treatment with (severe) or without (moderate) total knee replacement surgery. Gait variables that changed between groups were categorized as: those that differed between the asymptomatic group and both OA groups, those that differed between the asymptomatic group and the severe OA group only, or those that changed progressively, that is, the asymptomatic differed from the moderate OA, and the moderate OA differed from the severe OA group. Changes seen in both OA subject groups compared to asymptomatic included increased mid‐stance knee adduction moments, decreased peak knee flexion moments, decreased peak hip adduction moments, and decreased peak hip extension moments. Changes found only in the severe knee OA group included multiple kinematic and kinetic differences at the hip, knee, and ankle joints. Gait differences that progressed with OA severity included decreased stance phase knee flexion angles, decreased early stance knee extension moments, decreased peak stance phase hip internal rotation moments, and decreased peak ankle dorsiflexion moments. © 2007 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 26:332–341, 2008 相似文献
8.
《Journal of orthopaedic research》2017,35(2):321-330
9.
Distribution of MR-detected cartilage defects of the patellofemoral joint in chronic knee pain 总被引:1,自引:0,他引:1
Boegård TL Rudling O Petersson IF Jonsson K 《Osteoarthritis and cartilage / OARS, Osteoarthritis Research Society》2003,11(7):494-498
OBJECTIVES: The aim of the study was to detect cartilage defects and determine the center of these defects in MR imaging of the patellofemoral joint (PFJ) in middle-aged people with chronic knee pain. DESIGN: In the format of a prospective study of early osteoarthritis (OA), this cross-sectional study of the signal knee (the most painful one at inclusion in the study in 1990) in 59 individuals, 30 women and 29 men (aged 41-58 years, mean 50 years) with chronic knee pain, with or without radiographically determined knee OA, was examined using MR imaging on a 1.0 T imager. Cartilage defects and the center of these defects in the PFJ were recorded. RESULTS: Cartilage defects were found more often in the patella (40 knees) than in the femoral trochlea (23 knees) (P<0.001) and were unevenly distributed in the patella (P<0.001), with most cartilage defects in the mid-patella. CONCLUSIONS: Since cartilage defects occur more commonly in the mid-patella, radiographs obtained with a knee flexion of approximately 45 degrees may be more accurate to show cartilage defects of early OA of the PFJ than views with another knee flexion. 相似文献
10.
《Journal of orthopaedic research》2017,35(8):1661-1670
11.
《Journal of orthopaedic research》2017,35(10):2251-2259
12.
Abnormal loading of the hip and knee joints in unilateral hip osteoarthritis persists two years after total hip replacement
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Felix Stief André Schmidt Stefan van Drongelen Katharina Lenarz Dara Froemel Timur Tarhan Frederick Lutz Andrea Meurer 《Journal of orthopaedic research》2018,36(8):2167-2177
13.
JenniferC Erhart‐Hledik ConstanceR Chu JessicaL Asay Julien Favre ThomasP Andriacchi 《Journal of orthopaedic research》2019,37(7):1546-1554
This study investigated associations between changes in the total joint moment (TJM) at the knee and changes in cartilage thickness after anterior cruciate ligament reconstruction (ACLR). Seventeen subjects (five males; age: 29.6 ± 7.3 years) with unilateral ACLR underwent gait analysis and magnetic resonance imaging at baseline (2.2 ± 0.3 years post‐ACLR) and at long‐term follow‐up (7.7 ± 0.7 years post‐ACLR). Knee loading was assessed using the TJM, and differences in loading were analyzed using repeated measures analysis of variance. Pearson correlation coefficients assessed associations between changes in TJM and changes in (medial‐to‐lateral) M/L femoral cartilage thickness ratios in the ACLR limb. Bilaterally, there was no significant change in the magnitude of the TJM first peak (TJM1), however, there was a significant increase in the percent contribution of the knee flexion moment (KFM) (p < 0.001) and decrease in the percent contribution of the knee adduction moment (KAM) to TJM1 (p < 0.001). The change in the percent contributions of KFM and KAM to TJM1 were associated with changes in M/L femoral cartilage thickness in the ACLR limb. Specifically, subjects with smaller increases in KFM contribution (R = 0.521, p = 0.032) and smaller decreases in KAM contribution (R = ?0.521, p = 0.032) had a reduction in the M/L ratio in the central femoral subregion over the follow‐up period, with similar trends in the external femoral subregion. The study results provide new insight into changes in the loading environment at the knee joint prospectively following ACL reconstruction and give evidence that there are modifiable gait metrics that are associated with cartilage changes after ACLR. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:1546–1554, 2019. 相似文献
14.
BackgroundThe knee adduction moment (KAM) is considered an index for estimating the knee mechanical load, and increased KAM peak and KAM impulse are related to increased medial knee load and progression of knee joint degeneration. We aimed to verify the biomechanical factors of gait related to medial knee loading in patients 6 months after TKA.MethodsThirty-nine women who underwent TKA were enrolled. A three-dimensional gait analysis was performed 6 months postoperatively to generate data on the lower limb joint angle, moment, and power at the backward component (braking phase) and forward component (propulsion phase) peaks of the ground reaction force. Medial knee loading was evaluated using the time-integrated value of KAM during the stance period (KAM impulse). The higher the value of the KAM impulse, the higher the medial knee joint load. The relationships between the KAM impulse and the data for biomechanical factors were evaluated using partial correlation analysis with gait speed as a control factor.ResultsIn the braking phase, the KAM impulse positively correlated with the knee adduction angle (r = 0.377) and negatively correlated with the toe-out angle (r = −0.355). The KAM impulse positively correlated with the knee adduction angle (r = 0.402), the hip flexion moment (r = 0.335), and the hip adduction moment (r = 0.565) and negatively correlated with the toe-out angle (r = −0.357) in the propulsive phase.ConclusionThe KAM impulse 6 months after TKA was related to the knee adduction angle, hip flexion moment, hip adduction moment, and toe-out angle. These findings may provide fundamental data for controlling variable medial knee joint load after TKA and implementing patient management strategies to ensure implant durability. 相似文献
15.
《Acta orthopaedica》2013,84(6):647-652
We compared the mechanics of gait in 13 patients with early medial arthrosis (OA) of the knee and 13 normal controls, by measuring gait events, kinematic and kinetic parameters. In the OA group, walking velocity, cadence and stride length were reduced and stride time and double support time accordingly increased on both sides, the overall stance phase was prolonged in the OA group, but the stance phase and swing phase peak flexion were reduced. The varus in the stance phase and the valgus in the swing phase were increased. The extensor moment in the loading response was increased and the flexor moment at late stance reduced in the OA group. Patients with OA had a greater valgus (abductor) and internal rotation moment during the stance phase. The times to second vertical force peak (VFP) were similar in the two groups. Values of VFP1 and VFP2 were lower in the OA group. Our findings indicate that computerized gait analysis can be used to reveal various mechanical abnormalities accompanying arthrosis of the knee joint at an early stage. Some of these abnormalities may have etiologic implications, but others may represent secondary changes developed in part as a compensatory mechanism in knee OA. 相似文献
16.
Kinetic and kinematic characteristics of gait in patients with medial knee arthrosis 总被引:4,自引:0,他引:4
We compared the mechanics of gait in 13 patients with early medial arthrosis (OA) of the knee and 13 normal controls, by measuring gait events, kinematic and kinetic parameters. In the OA group, walking velocity, cadence and stride length were reduced and stride time and double support time accordingly increased on both sides, the overall stance phase was prolonged in the OA group, but the stance phase and swing phase peak flexion were reduced. The varus in the stance phase and the valgus in the swing phase were increased. The extensor moment in the loading response was increased and the flexor moment at late stance reduced in the OA group. Patients with OA had a greater valgus (abductor) and internal rotation moment during the stance phase. The times to second vertical force peak (VFP) were similar in the two groups. Values of VFP1 and VFP2 were lower in the OA group. Our findings indicate that computerized gait analysis can be used to reveal various mechanical abnormalities accompanying arthrosis of the knee joint at an early stage. Some of these abnormalities may have etiologic implications, but others may represent secondary changes developed in part as a compensatory mechanism in knee OA. 相似文献
17.
《Journal of orthopaedic research》2017,35(10):2275-2281
18.
General scheme to reduce the knee adduction moment by modifying a combination of gait variables
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Julien Favre Jennifer C. Erhart‐Hledik Eric F. Chehab Thomas P. Andriacchi 《Journal of orthopaedic research》2016,34(9):1547-1556
Reducing the knee adduction moment (KAM) is a promising treatment for medial compartment knee osteoarthritis (OA). Although several gait modifications to lower the KAM have been identified, the potential to combine modifications and individual dose‐responses remain unknown. This study hypothesized that: (i) there is a general scheme consisting of modifications in trunk sway, step width, walking speed, and foot progression angle that reduces the KAM; (ii) gait modifications can be combined; and (iii) dose‐responses differ among individuals. Walking trials with simultaneous modifications in step width, walking speed, progression angle, and trunk sway were analyzed for 10 healthy subjects. Wider step width, slower speed, toeing‐in, and increased trunk sway resulted in reduced first KAM peak, whereas wider step width, faster speed, and increased trunk sway reduced the KAM angular impulse. Individual regressions accurately modeled the amplitude of the KAM variables relative to the amplitude of the gait modification variables, while the dose‐responses varied strongly among participants. In conclusion, increasing trunk sway, increasing step width, and toeing‐in are three gait modifications that could be combined to reduce KAM variables related to knee OA. Results also indicated that some gait modifications reducing the KAM induced changes in the knee flexion moment possibly indicative of an increase in knee loading. Taken together with the different dose‐responses among subjects, this study suggested that gait retraining programs should consider this general scheme of modifications with individualization of the modification amplitudes. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:1547–1556, 2016. 相似文献
19.
Prasanna Sritharan Yi‐Chung Lin Sara E. Richardson Kay M. Crossley Trevor B. Birmingham Marcus G. Pandy 《Journal of orthopaedic research》2018,36(8):2157-2166
20.
Rutherford DJ Hubley-Kozey CL Deluzio KJ Stanish WD Dunbar M 《Osteoarthritis and cartilage / OARS, Osteoarthritis Research Society》2008,16(8):883-889
OBJECTIVE: To test the hypothesis that an association exists between the characteristics of the knee adduction moment and foot progression angle (FPA) in asymptomatic individuals and those with mild to moderate and severe knee osteoarthritis (OA). DESIGN: Fifty asymptomatic individuals, 46 patients with mild to moderate and 44 patients with severe knee OA were recruited. Maximum knee adduction moment during late stance and principal component analysis (PCA) were used to describe the knee adduction moment captured during gait. Multiple regression models were used for each of the three group assignments to analyze the association between the independent variables and the knee adduction moment. RESULTS: FPA explained a significant amount of the variability associated with the shape of the knee adduction moment waveform for the asymptomatic and mild to moderate groups (P<0.05), but not for the severe group (P>0.05). Walking velocity alone explained significant variance associated with the shape of the knee adduction moment in the severe OA group (P<0.05). CONCLUSION: A toe out FPA was associated with altered knee adduction moment waveform characteristics, extracted using PCA, in asymptomatic individuals and those with mild to moderate knee OA only. These findings are directly implicated in medial knee compartment loading. This relationship was not evident in those with severe knee OA. 相似文献