To evaluate the clinical efficacy and safety following percutaneous disc decompression, using navigable disc decompression device for cervical herniated nucleus pulposus (HNP).
Twenty subjects diagnosed with cervical HNP and refractory to conservative management were enrolled for the study. The herniated discs were decompressed under fluoroscopic guidance, using radiofrequency ablation device with navigable wand. The sagittal and axial plain magnetic resonance images of the clinically significant herniated disc, decided the space between the herniated base and outline as the target area for ablation. Clinical outcome was determined by Numeric Rating Scale (NRS), Neck Disability Index (NDI), and Bodily Pain scale of Short Form-36 (SF-36 BP), assessed after 48 weeks. After the procedure, we structurally matched the magnetic resonance imaging (MRI) and C-arm images through bony markers. The wand position was defined as being ‘correct’ if the tip was placed within the target area of both AP and lateral views; if not, the position was stated as ‘incorrect’.
The average NRS fell from 7 to 1 at 48 weeks post procedure (p<0.05). In addition, statistically significant improvement was noted in the NDI and SF-36BP (p<0.05). The location of the wand tip resulted in 16 correct and 4 incorrect placements. Post-48 weeks, 3 of the incorrect tip cases and 1 correct tip case showed unsuccessful outcomes.
The study demonstrated the promising results and safety of the procedure. Thus, focal plasma ablation of cervical HNP with navigable wand can be another effective treatment option.
Citations
We present a case of 5th cervical spine (C5) body fracture following cervical spine manipulation. The patient was an 18 year-old girl. She visited a non-authorized manipulation practitioner because of her shoulder pain. At that time she had no neck pain. During manipulation, the practitioner turned her neck suddenly with strong force, then she felt sudden neck pain. A fracture of the C5 body was identified in magnetic resonance images of the cervical spine.
We should be aware of the risk of serious complications associated with chiropractic manipulation.
Objective: To investigate the relationship between the curvature of the cervical spine and various clinical parameters and to identify the validity of new curvature measurement methods.
Method: The cervical spine curvature was assessed on lateral view of plain radiographs by three measurement indices. Index 1 is the ratio of length of line drawn by C2-C7 posteroinferior points and the longest length of vertical line to the posterior curve of C2-C7. Index 2 is the angle formed by three points of index 1. Index 3 is the sum of each distance from line drawn by C2-C7 posteroinferior point to C3-C7 posterior mid-points. The difference of each group and the relationship between pain scale and three indices were statistically analyzed by t-test and Pearson's correlation test.
Results: Sixty-three percent of control group patients showed a straight or kyphotic curvature and younger women group was more likely to have a straight curvature than other age groups. The newly designed measurement methods reflect the diagnostic significance of cervical curvature type measurement. Cervical lordosis did not exactly correlate with pain scale, symptom duration and the difference of clinical diagnosis. But the patients showing interval changes of pain scale were revealed the correlative change of curvature indices with each correlation coefficient of 0.43, 0.69 and 0.55 respectively.
Conclusion: The altered cervical curvature is less valuable for the diagnostic significance and did not relate to the pain scale and duration, but cervical curvature reflect the interval change of the pain scale.
Objective: To study the incidence and degree of the cervical instability in the cerebral palsied patients and to investigate the cause of the high incidence of cervical myelopathy in these patients.
Method: The static and dynamic radiography of the cervical spine in the sagittal plane was performed in seventy-two patients with athetoid and spastic cerebral palsy and the incidence of spondylolisthesis, range of motion(by the Penning Method), sagittal diameter of the cervical canal, and posture of the cervical spine were evaluated.
Results: The incidence of the cervical spondylolisthesis was fifty percent with athetoid cerebral palsy and twenty-seven percents with spastic cerebral palsy. The incidence of spondylolisthesis was especially high at the level of C3/4 and C4/5. The excessive range of motion in flexion/extension by the sagittal plane was observed in 66.7% of athetoid patients and 53.3% of spastic patients, especially at the C2/3 and C3/4 levels. The abnormal curvature was noted in 66.6% of athetoid and spastic patients. C-curve and S-curve were more common in athetoid patients and straightening of the C-spine was more common in spastic type. A sagittal diameter of the cervical spinal canal was significantly decreased in patients with athetoid patients with C3/4 spondylolisthesis and/or abnormal curvature such as a C-curve or S-curve(P＜0.05). Height of the vertebral body was decreased in both athetoid and spastic patients.
Conclusion: The combination of a cervical instability and a narrow spinal canal predisposes the neurological progression to a cervical myelopathy in cerebral palsied patients.
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