Muscle stiffness of the rectus femoris and vastus lateralis in children with Osgood-Schlatter disease
| Autor: | Shota Enomoto, Misaki Toeda, Toshiaki Oda, Norihide Sugisaki, Masaru Kaga, Sadao Kurokawa |
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| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
business.industry Electromyography Significant difference Knee flexion Tibial tuberosity Osgood schlatter Isometric exercise Muscle stiffness Knee Joint musculoskeletal system Quadriceps Muscle Voluntary contraction Internal medicine Isometric Contraction Cardiology medicine Elasticity Imaging Techniques Humans Osteochondrosis Orthopedics and Sports Medicine Range of Motion Articular business Child Muscle Skeletal |
| Zdroj: | The Knee. 32 |
| ISSN: | 1873-5800 |
| Popis: | Background The relevance of the mechanical properties of muscles in relation to Osgood–Schlatter disease (OSD) remains unclear. The present study aimed to examine rectus femoris (RF) and vastus lateralis (VL) muscle stiffness in children with OSD. Methods A total of 28 legs affected by OSD and 26 legs without OSD were assessed. The shear-wave velocity (SWV) of the RF and VL (in m/s) during passive knee flexion (0° (i.e., fully extended position), 45°, and 90° knee joint flexion) and isometric contraction (50% of maximal voluntary contraction) was measured using shear-wave elastography. Results The SWV of the RF was higher in subjects with OSD than in those without OSD at 45° and 90° flexion (P = 0.033 and P = 0.035, respectively); however, the SWV of the RF did not significantly differ at 0° flexion (P = 0.469). Similarly, the SWV of the VL exhibited no significant difference between the tested groups (P > 0.05). No significant difference in the SWV of both muscles during isometric contraction was observed between the two groups (P > 0.05). Conclusions The results suggest that a stiffer RF under stretched conditions (45° and 90° flexion) is related to the presence of OSD. Furthermore, both muscles under unstretched and contracted conditions and the VL under stretched conditions have limited association with the presence of OSD. These results have important implications for understanding the association between the mechanical properties of muscles and OSD. |
| Databáze: | OpenAIRE |
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