使用VIVOTM联合模拟器从实验中获得的动力学数据对本地膝盖进行建模:可行性研究
Paul Henke1, Johanna Meier2, Leo Ruehrmund3
1Department of Orthopaedics, Rostock University Medical Center, Doberaner Straße 142, 18057, Rostock, Germany. paul.henke@med.uni-rostock.de.
Biomedical engineering online
|August 23, 2024
概括
多体模拟对膝关节动力学有希望,但需要改进带参数. 需要进一步优化,以准确地复制生物力学研究的实验宽松性测试.
科学领域:
- 生物力学 生物力学
- 整形外科手术 整形外科手术
- 计算建模计算建模
背景情况:
- 对于许多患者来说,全膝关节整形术 (TKA) 的功能结果仍然是令人担忧的.
- 多体模拟为探索变量的实验研究提供了一个有效的替代方案.
- 对数值模型与实验数据的验证对于它们在生物力学中的应用至关重要.
研究的目的:
- 根据实验数据,验证一个对象特定的骨关节多体模型.
- 评估模型在被动曲和松测试下复制膝关节运动的能力.
- 确定膝盖生物力学当前建模方法的局限性.
主要方法:
- 在一个6度自由度的关节模拟器上分析了人类膝盖样本.
- 进行了被动曲和连续带切除松性测试,记录了关节动力学.
- 一个对象特定的多体模型包含了带和软骨接触,模拟了关节运动.
主要成果:
- 关于带切除的实验数据与现有文献保持一致.
- 多体模型在被动曲过程中与实验动力学有很好的一致性 (RMSE < 1.61 mm转换, < 2.1°旋转).
- 在松性测试中观察到显著差异,该模型预测的松度比实验测量 (高达8毫米) 低 (3毫米).
结论:
- 多体模型准确地复制了被动曲期间的膝盖动力学.
- 该模型的带参数过于硬,无法复制实验松.
- 未来的研究需要通过模型优化精确,对象特定的带参数识别.
相关概念视频
Knee Joint
1.6K
The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
1.6K
Development of the Limb Synovial Joints
1.3K
Joints form during embryonic development in conjunction with the formation and growth of the associated bones. The embryonic tissue that gives rise to all bones, cartilage, and connective tissues of the body is called mesenchyme.
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
1.3K
Bones of the Lower Limb: Femur and Patella
2.3K
The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the...
2.3K
Ankle Joint
1.5K
The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
1.5K
Kinematic Equations: Problem Solving
12.0K
When analyzing one-dimensional motion with constant acceleration, the problem-solving strategy involves identifying the known quantities and choosing the appropriate kinematic equations to solve for the unknowns. Either one or two kinematic equations are needed to solve for the unknowns, depending on the known and unknown quantities. Generally, the number of equations required is the same as the number of unknown quantities in the given example. Two-body pursuit problems always require two...
12.0K
Bones of the Lower Limb: Tibia and Fibula
3.0K
The tibia is the main weight-bearing bone of the lower leg. It is larger than the fibula with which it is paired. The tibia is also the second longest bone in the body and is located right below the skin. The proximal end of the tibia forms the medial and the lateral condyle, which articulates with the condyles of the femur to form the knee joint. Between the articulating surfaces is the irregular elevated area known as the intercondylar eminence that serves as the inferior attachment point for...
3.0K


