Spine
-
Comparative Study
B1 and TRPV-1 receptor genes and their relationship to hyperalgesia following spinal cord injury.
Laboratory investigation of pain behavior following spinal cord injury. ⋯ B1 and TRPV-1 receptor genes are overexpressed in the injured spinal cord of animals manifesting thermal hyperalgesia following SCI compared with similarly injured animals without hyperalgesia. This finding is consistent with past work regarding the role of these receptors in nociception and indicates that ongoing modifiable processes are occurring in the spinal cord that lead to clinical pain syndromes.
-
Cadaveric study. ⋯ The majority of specimens can safely accept placement of a laminar screw. This study establishes anatomic guidelines to allow for accurate screw selection and insertion. Preoperative planning is essential for safe screw placement via this technique.
-
In vitro study to characterize the flexibility of a new total posterior-element system when instrumented to L4-L5 segments. ⋯ The TOPS implant almost ideally restored the ROM in lateral bending and axial rotation compared to that of the intact specimen. In the sagittal plane, 85% of the intact ROM could be obtained. The ROM in axial rotation as a function of flexion and extension angle also mimics the biomechanical behavior of the posterior complex of a lumbar spine. This relationship between ROM and posture emphasizes the importance of a proper implantation.
-
Case report. ⋯ This minimal access procedure was effective in completely relieving pain from a metastatic deposit at C2, while adequately stabilizing the vulnerable segment by the injection of polymethyl methacrylate. The transoral route requires meticulous fluoroscopic control to prevent the leakage of polymethyl methacrylate but provides the most direct access to the C2 body.
-
Case report. ⋯ When faced with a patient with a history of multiple hereditary exostoses with new onset of myelopathic symptoms and a mass compressing the spinal cord, the clinician's differential should be broad and always initially include a metastatic lesion, osteochondroma, or chondrosarcoma.