Dropped head syndrome after cervical laminoplasty: A case control study
| Autor: | Kazuhisa Takahashi, Mitsutoshi Ota, Junya Saito, Takeo Furuya, Masashi Yamazaki, Satoshi Maki, Chikato Mannoji, Yasushi Ijima, Tomohiro Miyashita, Masaaki Aramomi, Tomoaki Kinoshita, Masao Koda |
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| Rok vydání: | 2016 |
| Předmět: |
Male
medicine.medical_specialty medicine.medical_treatment Radiography Kyphosis Laminoplasty 03 medical and health sciences Postoperative Complications 0302 clinical medicine Muscular Diseases Neck Muscles Risk Factors Physiology (medical) medicine Humans Postoperative Period 030222 orthopedics Muscle Weakness medicine.diagnostic_test business.industry Case-control study Muscle weakness Magnetic resonance imaging General Medicine medicine.disease Magnetic Resonance Imaging Sagittal plane Surgery medicine.anatomical_structure Neurology Case-Control Studies Cervical Vertebrae Female Neurology (clinical) medicine.symptom business 030217 neurology & neurosurgery Cervical vertebrae |
| Zdroj: | Journal of Clinical Neuroscience. 32:88-90 |
| ISSN: | 0967-5868 |
| DOI: | 10.1016/j.jocn.2016.03.027 |
| Popis: | Dropped head syndrome (DHS) is characterized by apparent neck extensor muscle weakness and difficulty extending the neck to raise the head against gravity. The aim of the present study was to elucidate possible risk factors for DHS after cervical laminoplasty. Five patients who developed DHS after cervical laminoplasty (DHS group) and twenty age-matched patients who underwent laminoplasty without DHS after surgery (control group) were compared. The surgical procedure was single-door laminoplasty with strut grafting using resected spinous processes or hydroxyapatite spacers from C3 to C6 or C7. Analyses of preoperative images including the C2-C7 angle, C7-T1 kyphosis, T1 tilt, center of gravity line from the head-C7 sagittal vertical axis (CGH-C7 SVA) were performed on lateral plain cervical spine radiographs. Preoperative T2-weighted MRI at the C5 vertebral level was used to measure the cross-sectional area of the deep extensor muscles. Widths of the lateral gutters were assessed postoperatively using CT scans of the C5 vertebral body. The average preoperative C2-C7 angle was significantly smaller in the DHS group compared with the control group. The average preoperative C7-T1 angle was significantly larger in the DHS group compared with the control group. The average preoperative CGH-C7 SVA was significantly larger in the DHS group compared with the control group. In conclusion, patients with more pronounced preoperative C2-C7 kyphosis, C7-T1 kyphosis, and CGH-C7 SVA are more likely to develop DHS following laminoplasty. |
| Databáze: | OpenAIRE |
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