4.5 Article

Surgical outcome of locked facet in distractive flexion injury of the subaxial cervical spine: Single institution retrospective study

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MEDICINE
卷 102, 期 22, 页码 -

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LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MD.0000000000033028

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cervical spine; distractive flexion injury; locked facet; postoperative complications

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In this case series, we examined the surgical outcomes of patients with locked facet distractive flexion injury (LF-DFI), focusing on the surgical approach and reduction maneuver. The study found that a posterior approach with partial facetectomy for LF reduction is considered a safer surgical technique than an anterior approach.
The optimal surgical treatment for patients suffering from distractive flexion injury of the subaxial cervical spine with a locked facet (LF) is unknown. Closed reduction via an anterior or posterior approach is a treatment option for LF. We examined the surgical outcomes of patients treated for locked facet distractive flexion injury (LF-DFI) in this case series, with a particular emphasis on the surgical approach and reduction maneuver. We retrospectively analyzed the patients with distractive flexion injury of the subaxial cervical spine who underwent surgery at our hospital between November 2006 and April 2021. Patients who did not have facet subluxation or dislocation or those who achieved LF reduction prior to skin incision were excluded from this study. The patients were divided into 2 groups based on their initial approach, anterior or posterior approach. Perioperative clinical outcomes, including the American Spinal Cord Injury Association scale score, radiological changes, and complications were analyzed. This study enrolled 12 patients with LF-DFI. Four and 8 patients underwent the anterior and posterior approaches, respectively. The LF was reduced using an anterior approach with traction between the vertebral bodies in the anterior approach group and using a posterior approach with partial facetectomy in the posterior approach group. The preoperative American Spinal Cord Injury Association scale scores were as follows: A, 1 patient; B, 1 patient; C, 3 patients; D, 4 patients; and E, 3 patients. Nine patients showed no neurologic deterioration after surgery, whereas 2 had an aggravated neurologic status. Postoperatively, patients who underwent posterior open reduction did not exhibit worsened neurologic symptoms, whereas 2 patients who underwent the anterior approach showed worsened neurologic symptoms. At the final follow-up, all patients achieved radiological fusion, and no complications other than neurologic deterioration were identified. In terms of worsening postoperative neurologic status, a posterior approach using partial facetectomy for LF reduction is considered a safer surgical technique than an anterior approach. To avoid iatrogenic intraoperative cord injury, we recommend posterior approach in patients with LF-DFI.

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