Neuropathologic Changes with Experimental Spinal Instrumentation
| Autor: | Kevin R. Gurr, Coe Jd, Becker Ps, Chester E. Sutterlin, Zdeblick Ta, Paul C. McAfee |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
medicine.medical_specialty
medicine.medical_treatment Bone Screws Lumbar vertebrae Bone grafting Fixation (surgical) Dogs medicine Animals Spinal canal Neurologic Examination Bone Transplantation Lumbar Vertebrae Osteosynthesis business.industry Equipment Design Spinal cord Internal Fixators Surgery Spinal Fusion medicine.anatomical_structure Spinal Cord Spinal fusion Lumbar spine Neurology (clinical) business Bone Wires |
| Zdroj: | Journal of SPINAL DISORDERS. 4:221-228 |
| ISSN: | 0895-0385 |
| DOI: | 10.1097/00002517-199106000-00013 |
| Popis: | Fifty-six mature beagles underwent lumbar spine destabilization, followed by fusion using four techniques. Spinal cord neuropathologic analysis was carried out to determine the number of abnormalities within each group. Group I (n = 14) had posterolateral bone grafting without instrumentation. Group IIa (n = 14) had Cotrel-Dubousset (CD) pedicle screws and rods. Group IIb (n = 14) had Steffee pedicle screws and plates. Group III (n = 14) had sublaminar wires and rods. All of the animals remained clinically neurologically normal throughout the 6 months of the study. The incidence of moderate to severe neuropathologic changes was 21% in Group I, 18% in Group II, and 64% in Group III. Thus, a significantly higher percentage of neuropathologic abnormalities occurred with sublaminar instrumentation than with no instrumentation (p = 0.027), or with transpedicular instrumentation (p = 0.027). In this controlled animal study, the theoretical advantage of pedicle screws, which should not violate the spinal canal, over sublaminar devices, which must enter the canal, was confirmed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|