Spine
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Comparative Study
Comparison of animal discs used in disc research to human lumbar disc: torsion mechanics and collagen content.
Experimental measurement and normalization of in vitro disc torsion mechanics and collagen content for several animal species used in intervertebral disc research and comparing these with the human disc. ⋯ Disc torsion mechanics are comparable with human lumbar discs in 9 of 11 disc types after normalization by geometry. The normalized torsion mechanics and collagen content of the multiple animal discs presented are useful for selecting and interpreting results for animal disc models. Structural organization of the fiber angle may explain the differences that were noted between species after geometric normalization.
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Review Case Reports
Stab wound with lodged knife tip causing spinal cord and vertebral artery injuries: case report and literature review.
Case report and literature review. ⋯ Cases of simultaneous spinal cord injury and vertebral artery injury in which the foreign body is retained are uncommonly reported. Digital subtracted angiography is necessary for cervical penetrating wounds and surgical approach should be individualized.
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Multicenter Study
Multivariate analysis of factors associated with kyphosis maintenance in adolescent idiopathic scoliosis.
Multicenter retrospective cohort study of 269 patients. ⋯ Our multivariate analysis demonstrates that in patients with AIS who have thoracic hypokyphosis as part of their deformity, certain factors must be taken into account in the preoperative planning to prevent hypokyphosis after surgical correction.
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Retrospective review of a multicenter series. ⋯ Patients with thoracic hyperkyphosis present even more of a challenge with respect to complications, specifically implant-related complications. Our study shows that growing rod surgery in patients with kyphosis more than 40° has significantly more general and implant complications than that in patients with normal thoracic kyphosis. Implant complications were more common in hyperkyphotic (>40°) patients and increased linearly with increasing kyphosis. The most common implant complication was rod breakage. Patients with hyperkyphotic thoracic spines, particularly syndromic patients, must be monitored closely and parents should be counseled regarding the likelihood of future adverse events.
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Randomized Controlled Trial
Tracheal traction exercise reduces the occurrence of postoperative dysphagia after anterior cervical spine surgery.
We designed a novel anterior cervical spine surgery preoperative treatment comprising mechanical trachea/esophagus traction and compared the postoperative outcome regarding dysphagia with nontreated patients. ⋯ Dysphagia could be reduced in patients with multiple-level fusion after anterior cervical spine surgery by preoperative TTE treatment.