Lumbar spinal strains associated with whiplash injury: a cadaveric study
| Autor: | Paul C. Begeman, Mark A. Thomas, Avital Fast, Thomas Chiu, Julian Sosner |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
musculoskeletal diseases
Male medicine.medical_specialty Lordosis Acceleration Poison control Physical Therapy Sports Therapy and Rehabilitation Lumbar vertebrae Weight-Bearing Lumbar Cadaver Whiplash Medicine Humans Whiplash Injuries Aged Lumbar Vertebrae business.industry Rehabilitation Accidents Traffic Anatomy medicine.disease Vertebra Surgery medicine.anatomical_structure Sprains and Strains Stress Mechanical business Cadaveric spasm |
| Zdroj: | American journal of physical medicinerehabilitation. 81(9) |
| ISSN: | 0894-9115 |
| Popis: | OBJECTIVES: To study and quantify the effects of rear-end collision on the lumbar spine. DESIGN: The lumbar spine of a cadaver was instrumented with rosette strain gauges applied on the lateral and anterior surfaces of T12, L2, and L4. Biaxial accelerometers were mounted on L1, L3, and L5. The cadaver was seated, restrained, and subjected to rear impacts of 5g and 8g. RESULTS: The anterior shear strains had a biphasic shape. Spinal strains peaked at the T12 at approximately 120 and 370 msec, whereas in the L4 vertebra, it peaked at 200 and 380 msec. The anterior strain pattern of the L4 and T12 vertebrae were in diametrically opposite directions. In the second set of tests (8g experiment), the acceleration forces and strains pattern were similar to the 5g test but of higher magnitude. The principal anterior strain was 480 microm/m for 5g and 530 microm/m for 8g; the lateral shear strain was 680 microm/m and 1500 microm/m in the 5g and 8g experiments, respectively. CONCLUSIONS: Forces generated during simulated whiplash collision induce biphasic lumbar spinal motions (increased-decreased lordosis) of insufficient magnitude to cause bony injuries, but they may be sufficient to cause soft-tissue injuries. Language: en |
| Databáze: | OpenAIRE |
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