Back to Search
Start Over
Multi-muscle activation strategies during walking in female post-operative total joint replacement patients
- Source :
- Journal of Electromyography and Kinesiology. 25:715-721
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- Dynamic knee joint function requires coordinated multi-muscle activation patterns (MMP) that may be adversely affected by total knee arthroplasty (TKA). This study identified MMP changes in post-operative female TKA patients using a Support Vector Machine (SVM). It was hypothesised that TKA patients can successfully be classified and display significant alterations in temporal and spectral muscle activation characteristics. 19 female subjects (10 unilateral gender-specific TKA, 62.2±8.6yrs, BMI 28.2±5.4; and 9 healthy controls, 61.4±7.4yrs, BMI 25.6±2.4) were recruited. Surface electromyograms (EMG) were obtained for 7 lower limb muscles during walking. Stance phase (±30%) EMG data were processed using a wavelet transform and normalized to total power. Data across all muscles were combined to form MMPs and analyzed using a SVM. Recognition rates for all subjects were computed for MMPs and individual muscles. A binomial test was used to establish statistical significance (p0.05). The results supported the hypothesis indicating significantly altered muscle activations for vastus medialis (recognition rate ∼68.4%) and biceps femoris (recognition rate ∼73.7%). Further analysis identified distinct between group differences across temporal, spectral and intensity domains. Application of a combined SVM and MMP approach may be beneficial for the future assessment of post-surgical dynamic muscle function.
- Subjects :
- medicine.medical_specialty
Biophysics
Neuroscience (miscellaneous)
Total knee arthroplasty
Walking
Electromyography
Knee Joint
Cohort Studies
Physical medicine and rehabilitation
Statistical significance
Humans
Medicine
Total joint replacement
Post operative
Arthroplasty, Replacement, Knee
Muscle, Skeletal
Aged
Postoperative Care
medicine.diagnostic_test
business.industry
Stance phase
Muscle activation
Middle Aged
Lower Extremity
Physical therapy
Female
Neurology (clinical)
business
Subjects
Details
- ISSN :
- 10506411
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- Journal of Electromyography and Kinesiology
- Accession number :
- edsair.doi.dedup.....c1a1d9473747bd6f4e0733e835cfacfd