Spine joint orthopaedic testing

Spine joint orthopaedic testing

 

 

 

Loading values Range of motion
Medial/ lateral Force ˜ 50 N Translation ˜ 30 mm
Anterior/ posterior Force ˜ 200 N Translation ˜ ± 30 mm
Superior/ inferior Compression  ˜ 40 N, with potential to go up to 600N Translation ˜ ± 30 mm
Flexion/ extension ˜ 15 Nm (cervical ˜ 2 Nm, thoracic and lumbar ˜ 10 Nm) Angle ˜ ± 90 °
Lateral bending ˜ 15 Nm (cervical ˜ 2 Nm, thoracic and lumbar ˜ 10 Nm) Angle ˜ ± 50 °
Axial rotation ˜ 15 Nm (cervical ˜ 2 Nm, thoracic and lumbar ˜ 10 Nm)  Angle ˜ ± 100 °
When using muscle actuators for follower load ˜ 400 – 1000 N

Mounting fixtures

The specimen mounting fixtures for the spine can be the memory lock clamp system, but only for small animal specimens as they will fit into the tubes.  If the specimens are larger additional fixtures are needed to grip the specimen, but the fixture still can interface with the memory lock clamps if it has a cylindrical end (Figure 12).  We currently have some designs for general spine mounting that we need to tweak, but nothing formally released as a “spine mounting system” yet.

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