Details on femoral head torsion test to ISO 7206-9 and ISO 7206-13
Artificial hip joints must withstand both compressive loads and torsion loads. To determine optimal materials and alloys, these are tested with a special testing machine.
The testing system consists of a 20 kN nominal force materials testing machine and a 500 Nm torsion drive.
The artificial hip joint (here made of metal) is rotated on a support unit (torsion loading) with simultaneous compression loading. This tests materials and alloys best suited for artificial hip joints.
- Characterization of the resistance of a hip joint head to torques in normal in-vivo application
- Supports the opportunity to develop a better anchor between the two components
- Application of a static compression preload; the transverse torque then increases until the head turns
- Static biaxial testing machine (20 kN) with 500 Nm torque motor
