scholarly journals Alterations in lower limb multimuscle activation patterns during stair climbing in female total knee arthroplasty patients

2015 ◽  
Vol 114 (5) ◽  
pp. 2718-2725 ◽  
Author(s):  
G. Kuntze ◽  
V. von Tscharner ◽  
C. Hutchison ◽  
J. L. Ronsky
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Lower Limb ◽  
Muscle Activation ◽  
Recognition Rate ◽  
Stair Climbing ◽  
Independent Group ◽  
Activation Patterns ◽  
Control Subjects ◽  
Total Knee

Total knee arthroplasty (TKA) patients commonly experience neuromuscular adaptations that may affect stair climbing competence. This study identified multimuscle pattern (MMP) changes in postoperative female TKA patients during stair climbing with a support vector machine (SVM). It was hypothesized that TKA patients adopt temporal and spectral muscle activation characteristics indicative of muscle atrophy and cocontraction strategies. Nineteen female subjects [10 unilateral sex-specific TKAs, 62.2 ± 8.6 yr, body mass index (BMI) 28.2 ± 5.4 kg/m2; 9 healthy control subjects, 61.4 ± 7.4 yr, BMI 25.6 ± 2.4 kg/m2] were recruited. Surface electromyograms (EMGs) were obtained for seven lower limb muscles of the affected limb of TKA subjects and a randomly assigned limb for control subjects during stair climbing. Stance phase (±30%) EMG data were wavelet transformed and normalized to total power. Data across all muscles were combined to form MMPs and analyzed with a SVM. Statistical analysis was performed with binomial tests, independent group t-tests, or independent group Mann-Whitney U-tests in SPSS ( P < 0.05). SVM results indicated significantly altered muscle activation patterns in the TKA group for biceps femoris (recognition rate 84.2%), semitendinosus (recognition rate 73.7%), gastrocnemius (recognition rate 68.4%), and tibialis anterior (recognition rate 68.4%). Further analysis identified no significant differences in spectral activation characteristics between groups. Temporal adaptations, indicative of cocontraction strategies, were, however, evident in TKA MMPs. This approach may provide a valuable tool for clinical neuromuscular function assessment and rehabilitation monitoring.

scholarly journals Muscle activation patterns during stair ascent after total knee arthroplasty

2017 ◽  
Vol 25 ◽  
pp. S124-S125
Author(s):  
H. Horiuchi ◽  
T. Kobayashi ◽  
M. Yamanaka ◽  
T. Kannari ◽  
N. Matsui ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Muscle Activation ◽  
Activation Patterns ◽  
Stair Ascent ◽  
Muscle Activation Patterns ◽  
Total Knee

Muscle activation patterns during the postural control task after total knee arthroplasty

Physiotherapy ◽  
2015 ◽  
Vol 101 ◽  
pp. e771-e772
Author(s):  
T. Kobayashi ◽  
M. Yamanaka ◽  
T. Kannari ◽  
H. Horiuchi ◽  
N. Matsui ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Postural Control ◽  
Knee Arthroplasty ◽  
Muscle Activation ◽  
Control Task ◽  
Activation Patterns ◽  
Muscle Activation Patterns ◽  
Total Knee

scholarly journals Muscle activation patterns during forward stepping after total knee arthroplasty

2017 ◽  
Vol 25 ◽  
pp. S137-S138
Author(s):  
T. Kobayashi ◽  
T. Kannari ◽  
H. Horiuchi ◽  
N. Matsui ◽  
K. Kakuse ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Muscle Activation ◽  
Activation Patterns ◽  
Muscle Activation Patterns ◽  
Total Knee

scholarly journals Compromised knee internal rotation in total knee arthroplasty patients during stair climbing

PLoS ONE ◽  
2018 ◽  
Vol 13 (10) ◽  
pp. e0205492
Author(s):  
Igor Komnik ◽  
Sina David ◽  
Johannes Funken ◽  
Christine Haberer ◽  
Wolfgang Potthast ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Internal Rotation ◽  
Knee Arthroplasty ◽  
Stair Climbing ◽  
Total Knee

scholarly journals Self-reported chair-rise ability relates to stair-climbing readiness of total knee arthroplasty patients: A pilot study

2007 ◽  
Vol 44 (5) ◽  
pp. 751 ◽  
Author(s):  
John Nyland ◽  
Karen Frost ◽  
Peter Quesada ◽  
Claudia Angeli ◽  
Ann Swank ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Pilot Study ◽  
Knee Arthroplasty ◽  
Stair Climbing ◽  
Total Knee ◽  
Chair Rise

AB1284-HPR RELIABILITY OF STEP TEST IN SUBJECTS WITH TOTAL KNEE ARTHROPLASTY

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 1932.1-1933
Author(s):  
M. Eymir ◽  
E. Yuksel ◽  
B. Unver ◽  
K. Sevik ◽  
V. Karatosun
Keyword(s):  
Total Knee Arthroplasty ◽  
Motor Control ◽  
Lower Extremity ◽  
Knee Arthroplasty ◽  
Lower Limb ◽  
Standing Balance ◽  
Step Test ◽  
Retest Reliability ◽  
Total Knee ◽  
Test Retest Reliability

Background:Patients with TKA show impairments in standing balance up to 1 year after surgery. The impaired standing balance in TKA patients was found to be associated with falls risk and decreased functional level. Assessing of standing balance with objective and reliable assessments tools would therefore be extremely useful for determining accurate exercise program, and risks of falling, especially during the rehabilitative period when ambulation is at its most unsteady (1, 2). The stepping maneuver requires adequate strength and motor control to stabilize the body over the stance limb while the other leg is stepping, therefore the Step Test (ST) provides significant information for dynamic standing balance and lower limb motor control (3). The reliability of ST is reported in patient groups such as stroke, however, there is not any study that investigates the reliability of ST in patients with TKA in the current literature.Objectives:The purposes of this study were to determine the test-retest reliability and the minimal detectable change (MDC) of the ST in patients with TKA.Methods:40 patients with TKA due to knee osteoarthritis, operated by the same surgeon, were included in this study. Patients performed trials for ST twice on the same day. Between the first and second trials, patients waited for an hour on sitting position to prevent fatigue. The ST assesses an individual’s ability to place one foot onto a 7.5-cm-high step and then back down to the floor repeatedly as fast as possible for 15 seconds. The score is the number of steps completed in the 15-second period for each lower extremity. Scores for each lower extremity were recorded separately. Prior to the testing, the ST was demonstrated by the tester and all participants were allowed to a practice trial.Results:The ST showed an excellent test-retest reliability (ICC2,1=0.95) in this study. Standard error of measurement (SEM) and MDC95for ST were 0.37 and 1.02, respectively.Conclusion:This study found that the ST has an excellent test–retest reliability in patients with TKA. It is an effective and reliable tool for measuring dynamic standing balance and participant falls. As a performance-based clinical test, the ST is easy to score, can be applied in a short time as part of the routine medical examination. Therefore, inclusion of ST into a more comprehensive battery of performance-based measures of standing balance and lower limb motor control function in subjects with TKA should be considered.References:[1]Si, H. B., Zeng, Y., Zhong, J., et al. (2017). The effect of primary total knee arthroplasty on the incidence of falls and balance-related functions in patients with osteoarthritis. Scientific reports, 7(1), 1-9.[2]Moutzouri, M., Gleeson, N., Billis, E., et al. (2017). The effect of total knee arthroplasty on patients’ balance and incidence of falls: a systematic review. Knee Surgery, Sports Traumatology, Arthroscopy, 25(11), 3439-3451.[3]Hill, K. D., Bernhardt, J., McGann, A. M., et al. (1996). A new test of dynamic standing balance for stroke patients: reliability, validity and comparison with healthy elderly. Physiotherapy Canada, 48(4), 257-262.Disclosure of Interests:None declared

Lower-limb loading and stability during stair descent following total knee arthroplasty

2019 ◽  
Vol 22 ◽  
pp. S102
Author(s):  
L. Perraton ◽  
B. Mentiplay ◽  
K. Bower ◽  
J. Feller ◽  
T. Whitehead ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Knee Arthroplasty ◽  
Lower Limb ◽  
Stair Descent ◽  
Limb Loading ◽  
Total Knee
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