Inter-Laboratory Study of Lumbar Spine Surrogate Behaviors

An inter-laboratory study evaluated the reproducibility of multi-dimensional spinal loading protocols using lumbar surrogate models. The results demonstrated strong agreement between two distinct biomechanical testing systems, with inter-laboratory range of motion differences of 0.53°–0.55° and peak load differences of 0.92–1.64 Nm. This work by Emma C. Coltoff lays a foundation for future multidimensional testing of complex spine biomechanics.

Use Cases

• Benchmarking biomechanical testing systems based on combined Flexion-Extension and Lateral Bending trajectories
• Developing standardized protocols for spinal surrogate testing based on multi-dimensional loading methods
• Evaluating specimen asymmetries and biomechanical responses beyond traditional pure moment testing
• Cross-platform translation of testing procedures between robotic arms and linear-torsion systems

Strengths

• Results show strong inter-laboratory agreement with ROM differences of 0.53°–0.55° (8%–10%)
• Peak load differences between laboratories were 0.92–1.64 Nm (10%–18%) for 3D printed surrogates
• Protocols were successfully decomposed and translated between two distinct testing systems
• Data is openly available under a CC-BY-4.0 license

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• The dataset is a 678.5 KB PDF, which is a tiny file; the scope is limited to the described study

Provenance

Source

figshare

Collection Method

Experimental biomechanical testing on lumbar spinal surrogate models using a six-axis robotic arm and a two-axis linear-torsion system.

Freshness

Last updated 2026-04-09 04:08:12