The Effect of Non-linear Spring-Loaded Knee Orthosis on Lower Extremity Biomechanics
| Autor: | Christine D. Walck, Yeram Lim, Tyler J. Farnese, Todd Furman, Daryl C. Osbahr, Victor Huayamave |
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| Rok vydání: | 2020 |
| Předmět: |
musculoskeletal diseases
Soleus muscle medicine.medical_specialty business.industry Biomechanics Squat Osteoarthritis Knee Joint musculoskeletal system medicine.disease Physical medicine and rehabilitation medicine.anatomical_structure Knee orthosis medicine Gluteus maximus muscle business human activities Pelvis |
| Zdroj: | Lecture Notes in Computational Vision and Biomechanics ISBN: 9783030431945 |
| DOI: | 10.1007/978-3-030-43195-2_31 |
| Popis: | Conventional knee orthosis are prescribed for people suffering from symptomatic knee osteoarthritis and from anterior cruciate ligament injuries. This case study aims to quantify the biomechanical response of the tibiofemoral joint complex to a non-linear spring-loaded (NLSL) knee joint orthosis (KJO). Joint angles and forces obtained from two dynamic trials were applied to a customized OpenSim computational musculoskeletal model, and a static equilibrium problem was solved at each instant during the squat cycle, with and without a NLSL KJO, to find individual muscle forces of the lower extremity. The NLSL KJO was seen to increase the gluteus maximus muscle force while decreasing the rectus femoris and soleus muscle forces. Due to the increased activation occurring in the gluteus maximus during the brace-on descent, the knee joint axis moved in a less anterior direction then what was seen in the brace-off descent. As a result, the pelvis translated in a more posterior direction due to the tension supplied by the gluteus maximus and the ease of the soleus. Furthermore, knee flexion was decreased in the upright position during the brace-on conditions. Results suggest that the NLSL KJO could be used as a performance tool to encourage a more balanced synergy that employs the posterior chain musculature versus a quadriceps dominant strategy while preventing hyperextension tendencies. |
| Databáze: | OpenAIRE |
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