Journal of spinal disorders & techniques
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J Spinal Disord Tech · Jul 2009
Comparative StudyComparison of cardiovascular parameters between patients with ossification of posterior longitudinal ligament and patients with cervical spondylotic myelopathy.
Ossification of the posterior longitudinal ligament (OPLL) is an ectopic bone formation in the ligament tissue of the spine, causing myelopathy as a result of chronic pressure on the spinal cord and nerve roots. It has been further categorized into 4 types, that is, segmental, continuous, mixed types, and the other types; however, differences in the detail of the progression in the ossification and natural history of the disease among these types have not been clarified. ⋯ These parameters of patients with cervical spondylotic myelopathy were used as a control (CSM patients). Although there was no significant difference in bleeding time and coagulation factors, blood loss after surgery of OPLL patients was significantly higher than that of CSM patients (P<0.01). Furthermore, blood loss of patients with continuous type of ossification was significantly higher (P<0.05) than that of patients with segmental type of ossification, which was nearly equal to that of CSM patients. Blood loss of patients with mixed type of ossification showed the value of the middle of segmental and continuous types.
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J Spinal Disord Tech · Jul 2009
Comparative StudyClinical usefulness of CT-myelogram comparing with the MRI in degenerative cervical spinal disorders: is CTM still useful for primary diagnostic tool?
A radiographic review of 50 patients (29 radiculopathy and 21 myelopathy) who had undergone the anterior cervical discectomy and fusion was performed by 3 observers retrospectively. ⋯ CTM was still useful in diagnosis of the foraminal stenosis and bony lesion comparing with MRI but showed limitation in disc abnormality and nerve root compression. So even though CTM may provide valuable additional information in difficult or ambiguous cases, it also requires universal standards and sound experience for constant and objective information.
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J Spinal Disord Tech · Jul 2009
Radiographic and clinical outcomes after instrumented reduction and transforaminal lumbar interbody fusion of mid and high-grade isthmic spondylolisthesis.
Retrospective cohort study. ⋯ This study represents a unified approach to the solitary diagnosis of mid and high-grade adult isthmic spondylolisthesis, adding further information to the growing body of literature for the TLIF procedure.
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J Spinal Disord Tech · Jul 2009
Diagnostic features of sciatica without lumbar nerve root compression.
Retrospective case series review of patients showing sciatica without radiographic evidence of nerve root compression. ⋯ Piriformis syndrome and gynecologic conditions account for most cases of extralumbar spinal sciatica. Female sex, right side involvement, and overlapping sensory disturbance are suggestive of extralumbar spinal sciatica associated with gynecologic conditions.
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J Spinal Disord Tech · Jul 2009
Timing of vertebral registration in three-dimensional, fluoroscopy-based, image-guided spinal surgery.
The timing of vertebral registration using isocentric fluoroscopy was recorded in 20 consecutive patients undergoing image-guided spinal surgery. ⋯ The use of the isocentric C-arm for vertebral registration in image-guided spinal surgery can be performed in an efficient manner. In this study, multiple vertebral levels of registration could be accomplished in less than 9 minutes with minimal to no radiation exposure to the surgeon and operating room personnel.