Neuromuscular reflex assessment method
US6480735B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | May 14, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/6823
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Studies investigating posteroanterior (PA) forces in spinal stiffness assessment have shown relationships to spinal level, body type, and lumbar extensor muscle activity. Little objective evidence is available discerning variation in PA stiffness and its clinical significance. The aim of this prospective clinical study was to determine the stiffness index and neuromuscular characteristics of the asymptomatic and symptomatic low back. Twenty-two subject underwent physical examination and completed outcome VAS, Oswestry, and SF-36 questionnaires. A hand-held spinal manipulation instrument, equipped with a load cell and accelerometer was used to deliver high rate (<0.1 sec) PA manipulative thrusts (450 N) to several common spinal landmarks including the posterior superior iliac spine (PSIS), sacral base, and L5, L4, L2, T12, T8 spinous (SP) and transverse processes (TP). Surface, linear enveloped, electromyographic (sEMG) recordings were obtained during the trusts from electrodes (8 leads) located over the L3 and L5 erector spinae. The accelerance (peak acceleration/peak force, kg−1) or stiffness index and composite sEMG response was calculated for each of the trusts. Significan…
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