Spine
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The levels of dorsal root ganglions (DRGs) innervating the dorsal portion of the lumbar intervertebral discs from L1-L2 to L4-L5 were investigated in rats by the retrograde transport method. The pathways and functions of nerve fibers supplying the dorsal portion of the discs were investigated by denervation and immuno-histochemistry. ⋯ The dorsal portion of the lumbar discs from L1-L2 to L4-L5 is multisegmentally innervated by the T11 through L5 dorsal root ganglions. Sensory fibers from the upper dorsal root ganglions innervate the dorsal portion of the discs via the paravertebral sympathetic trunks, although those from the lower dorsal root ganglions innervate via the sinuvertebral nerves. Furthermore, sensory nerve fibers enter the paravertebral sympathetic trunks through the corresponding ramus communicans and reach the dorsal root ganglions via each ramus communicans at the L2 and/or more cranial levels.
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Randomized Controlled Trial Clinical Trial
The impact of physical function and pain on work status at 1-year follow-up in patients with back pain.
A randomized, controlled trial. ⋯ Return to work was related to physical function and pain. More importance seemed to be attributed to physical performance in the intervention group than in the controls as a basis for returning patients to work.
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Comparative Study
A comparison of symptom checklist 90-revised profiles from patients with chronic pain from whiplash and patients with other musculoskeletal injuries.
A quasi-experimental design was used to compare the Symptom Checklist 90-Revised profiles (SCL-90-R) from a group of patients with whiplash injuries (n = 67) and a group with mixed musculoskeletal pain (n = 91). ⋯ The current study failed to support the validity of a distinctive SCL-90-R profile for patients with whiplash injuries. Instead, the results suggest that the psychological consequences of experiencing chronic pain from whiplash-associated disorders are similar to the psychological consequences of chronic pain from other musculoskeletal injuries.
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Balance performance in unstable sitting and trunk muscle response to quick force release were measured in 16 patients with chronic low back pain and 14 matched healthy control subjects. ⋯ Patients with chronic low back pain demonstrated poorer postural control of the lumbar spine and longer trunk muscle response times than healthy control volunteers. Correlation between these two phenomena suggests a common underlying pathology in the lumbar spine.
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Case Reports
Traumatic atlantoaxial rotatory dislocation with odontoid fracture: case report and review.
A case of traumatic rotatory dislocation associated with odontoid fracture is reported. ⋯ As the pivot of rotatory subluxation changed after odontoid process osteosynthesis, posterior C1-C2 arthrodesis was performed. The patient probably could have been treated in a single-stage procedure using posterior C1-C2 transarticular fixation with bicortical interspinous graft.