The effect of patellar thickness on gait biomechanics following total knee arthroplasty
Autor: | Elizabeth A. Parke, Cass K. Nakasone, Christopher D. Stickley, Samantha N. Andrews, Anne R. Wright |
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Rok vydání: | 2019 |
Předmět: |
Male
musculoskeletal diseases 0206 medical engineering Total knee arthroplasty Walking 02 engineering and technology Osteoarthritis Knee Joint 03 medical and health sciences 0302 clinical medicine Humans Medicine Orthopedics and Sports Medicine Longitudinal Studies Ground reaction force Arthroplasty Replacement Knee Aged Orthodontics business.industry Stair negotiation Biomechanics Patella 030229 sport sciences Osteoarthritis Knee musculoskeletal system medicine.disease 020601 biomedical engineering Biomechanical Phenomena Gait analysis Female Gait Analysis business human activities |
Zdroj: | The Knee. 26:1354-1359 |
ISSN: | 0968-0160 |
Popis: | Background Patella resurfacing is commonly performed during total knee arthroplasty; however, determining the appropriate patellar thickness remains a challenge. The purpose of this study was to evaluate the role of post-TKA patellar thickness on knee extensor strength and biomechanical joint loading forces during walking and stair negotiation. Methods Fifteen patients (21 knees) underwent gait analysis prior to TKA and post-TKA at six weeks, three months, six months, and one year. Knee extensor strength and biomechanics were collected during level walking and stair negotiation and analyzed using Pearson correlation coefficients. Results Knee extensor strength was positively correlated to patellar thickness at three months and one year post-TKA (p ≤ .05). During walking, no significant correlations were present. During stair ascent, there was a positive correlation between patellar thickness and peak knee flexion angle one year post-TKA (p ≤ .05). During stair descent, there was a positive correlation between patellar thickness and maximum vertical ground reaction forces at one year post-TKA (p ≤ .01). Conclusions The loss of patellar thickness when compared to measured pre-resurfacing thickness was correlated with a decrease in knee extensor strength; however, changes in patellar thickness were not significantly correlated to biomechanical loading forces during walking. Increases in demand of activity increase the torque to the knee joint, which elicit increases in compensatory motions, likely reducing the extent to which differences in joint loading during stair negotiation may be attributable to changes in patellar thickness. Therefore, the effect of post-patellar thickness on patient function in primary TKA is limited. |
Databáze: | OpenAIRE |
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