Knee motion and muscle activation patterns are altered in hip osteoarthritis: The effect of severity on walking mechanics
| Autor: | Glen Richardson, Janice M. Moreside, Ivan Wong, Lindsey Buckingham, Derek Rutherford |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
musculoskeletal diseases
medicine.medical_specialty Knee Joint medicine.medical_treatment Population Biophysics Hamstring Muscles Osteoarthritis Electromyography Walking Severity of Illness Index Osteoarthritis Hip Quadriceps Muscle 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Medicine Humans Orthopedics and Sports Medicine Range of Motion Articular education Aged education.field_of_study medicine.diagnostic_test business.industry 030229 sport sciences Middle Aged medicine.disease Arthroplasty Sagittal plane Biomechanical Phenomena medicine.anatomical_structure Cross-Sectional Studies Gait analysis Case-Control Studies Exercise Test business 030217 neurology & neurosurgery Hamstring |
| Zdroj: | Clinical biomechanics (Bristol, Avon). 59 |
| ISSN: | 1879-1271 |
| Popis: | Knee function is impaired in individuals with moderate hip osteoarthritis. How this extends to those undergoing total hip arthroplasty is unknown despite the common requirement for knee arthroplasty in this population. The study purpose was to determine whether sagittal plane knee joint movements and quadriceps and hamstring activation patterns differ between individuals with either moderate or severe unilateral hip osteoarthritis, and between ipsilateral and contralateral knees.20 individuals with moderate osteoarthritis and 20 with severe osteoarthritis were recruited. Sagittal knee motion and surface electromyograms from the hamstrings and quadriceps were collected during treadmill walking at a self-selected speed. Principal component analysis captured amplitude and temporal sagittal plane motion and EMG waveform features. Student's t-tests and Analysis of Variance determined between group differences and within/between group leg differences.The severe groups' contralateral knee was in greater flexion at initial contact and demonstrated a movement profile of a longer stance phase (p 0.001). The severe group had reduced sagittal plane knee motion (p 0.0001); more so in the ipsilateral knee (p 0.0001). The severe group had greater hamstring (p = 0.009) and quadriceps activation (p 0.001) overall, specifically mid-stance quadriceps bilaterally (p = 0.002). Ipsilateral sagittal plane knee motion was reduced in both groups. Compared with those with moderate osteoarthritis, individuals with severe osteoarthritis walk with reduced sagittal plane knee motion bilaterally, suggesting prolonged contralateral stance, and elevated mid-stance hamstring and quadriceps activation.Altered kinematics and muscle activity could contribute to a greater mechanical demand on the contralateral knee in those with more severe hip osteoarthritis. |
| Databáze: | OpenAIRE |
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