Assessment of Knee Kinematics in Older Adults Using High-Speed Stereo Radiography
| Autor: | Kevin B. Shelburne, Bradley S. Davidson, Raymond H. Kim, Donald R. Hume, Michael D. Harris, Vasiliki Kefala, Adam J. Cyr |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Male
medicine.medical_specialty Rotation 0206 medical engineering Physical Therapy Sports Therapy and Rehabilitation Knee kinematics 02 engineering and technology Kinematics Osteoarthritis Walking Article Body Mass Index 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Imaging Three-Dimensional Activities of Daily Living medicine Humans Orthopedics and Sports Medicine Knee Range of Motion Articular 030222 orthopedics Stereo radiography business.industry Middle Aged medicine.disease 020601 biomedical engineering Stair Climbing Biomechanical Phenomena Radiography Female Range of motion business Body mass index human activities Envelope (motion) |
| Zdroj: | Med Sci Sports Exerc |
| Popis: | PURPOSE: Quantification of knee motion is essential for assessment of pathologic joint function, such as tracking osteoarthritis progression and evaluating outcomes after conservative or surgical treatment, including total knee arthroplasty. Our purpose was to establish a useful baseline for the kinematic envelope of knee motion in healthy older adults performing movements of daily living. METHODS: A high-speed stereo radiography system was used to measure the three-dimensional tibiofemoral kinematics of eight healthy people over 55 yr of age (4 women/4 men; age, 61.7 ± 5.4 yr; body mass, 74.6 ± 7.7 kg; body mass index, 26.7 ± 4.4 kg·m(−2); height, 168.2 ± 13.7 cm) during seated knee extension, level walking, pivoting, and step descent. RESULTS: Internal–external and varus–valgus rotation and anterior–posterior range of motion through stance in normal walking averaged 3.6° ± 1.1°, 2.3° ± 0.6°, and 3.4 ± 1.57 mm, respectively. Average range of motion across subjects was greater during the step-down in both internal–external rotation (average, 6.5° ± 3.1°) and anterior–posterior translation (average, 4.5 ± 1.1). Average internal–external range of motion increased to 13.5° ± 3.6° during pivoting. Range of motion of the knee in varus–valgus rotation was nearly the same for each subject across activities, rarely exceeding 6°. CONCLUSIONS: Pivoting and step descending during walking had greater internal–external rotation and anterior–posterior translation than normal gait. Internal–external rotation and anterior–posterior translation were shown to have greater activity dependence, whereas varus–valgus rotation was consistent across activities. These results were similar to prior measurements in younger cohorts, though a trend toward reduced range of motion in the older adults was observed. |
| Databáze: | OpenAIRE |
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