Wrap bones¶
The ligament and tendon meshes are defined based on their insertion sites, and they may be overclosing other bodies in the simulation. This step activates the ligament and tendon interactions with the femur, tibia, and patella. These bodies are the first to have ligament interactions because their kinematics will remain fixed.
The total time for this step is 0.1 seconds.
Interactions¶
The ligament/tendon interactions with the osseous femur, tibia, and patella are activated. Interactions of the ligaments with the menisci and cartilage are still inactive in this step because the amount of overclosure may lead to instability.
Name | Femur | Tibia | Patella | Femoral Cartilage | Tibial Cartilage | Patellar Cartilage | Medial Meniscus | Lateral Meniscus |
---|---|---|---|---|---|---|---|---|
amACL | x | x | ||||||
plACL | x | x | ||||||
alPCL | x | x | ||||||
pmPCL | x | x | ||||||
sMCLProx | x | x | ||||||
sMCLDist | x | x | ||||||
dMCL | x | x | ||||||
LCL | x | |||||||
ALL | x | x | ||||||
PFL | x | x | ||||||
OPL | x | x | ||||||
MPFL | x | x | x | |||||
LPFL | x | x | x | |||||
Patellar Tendon | x | x | ||||||
Quadriceps Tendon | x |
Kinematic Boundary Conditions¶
Femur¶
The femur is fixed in all degrees of freedom throughout this step.
Tibia¶
The tibia is fixed in all degrees of freedom throughout this step.
Patella¶
The proximal nodes in the quadriceps tendon will be fixed in all degrees freedom in this step.
The tibia is fixed in all degrees of freedom throughout this step.