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Rani Nasser, Doniel Drazin, Jonathan Nakhla, Lutfi Al-Khouja, Earl Brien, Eli M. Baron, Terrence T. Kim, J. Patrick Johnson and Reza Yassari

OBJECTIVE

The use of intraoperative stereotactic navigation has become more available in spine surgery. The authors undertook this study to assess the utility of intraoperative CT navigation in the localization of spinal lesions and as an intraoperative tool to guide resection in patients with spinal lesions.

METHODS

This was a retrospective multicenter study including 50 patients from 2 different institutions who underwent biopsy and/or resection of spinal column tumors using image-guided navigation. Of the 50 cases reviewed, 4 illustrative cases are presented. In addition, the authors provide a description of surgical technique with image guidance.

RESULTS

The patient group included 27 male patients and 23 female patients. Their average age was 61 ± 17 years (range 14–87 years). The average operative time (incision to closure) was 311 ± 188 minutes (range 62–865 minutes). The average intraoperative blood loss was 882 ± 1194 ml (range 5–7000 ml). The average length of hospitalization was 10 ± 8.9 days (range 1–36 days). The postoperative complications included 2 deaths (4.0%) and 4 radiculopathies (8%) secondary to tumor burden.

CONCLUSIONS

O-arm 3D imaging with stereotactic navigation may be used to localize lesions intraoperatively with real-time dynamic feedback of tumor resection. Stereotactic guidance may augment resection or biopsy of primary and metastatic spinal tumors. It offers reduced radiation exposure to operating room personnel and the ability to use minimally invasive approaches that limit tissue injury. In addition, acquisition of intraoperative CT scans with real-time tracking allows for precise targeting of spinal lesions with minimal dissection.

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Faris Shweikeh, Lutfi Al-Khouja, Miriam Nuño, J. Patrick Johnson, Doniel Drazin and Matthew A. Adamo

OBJECT

Tethered cord syndrome (TCS) is a common spinal abnormality. In this study, the authors analyzed demographics, complications, and outcomes in children and adolescents who underwent surgery for TCS.

METHODS

Using the national Kids' Inpatient Database (KID), the authors retrospectively identified patients with a primary diagnosis of TCS who were treated with spinal laminectomy and discharged in 2000, 2003, 2006, and 2009. Descriptive analysis was provided for patient- and hospital-level characteristics. Mortality, complications, non-routine discharges, in-hospital length of stay (LOS), and total charges were documented for the entire cohort and age-specific cohorts (0–5, 6–10, 11–15, and 16–20 years). Comparisons by complications and age groups were conducted.

RESULTS

A total of 7397 children and adolescents met the criteria in the 4 studied years. The mean age was 5.7 years; 55.3% of patients were younger than 5 years, 21.5% were 6–10 years, and 16.2% were 11–15 years. Most surgeries were performed in patients who were female (55.0%) and white (64.4%) and were performed at large (49.8%), teaching (94.2%), and urban (99.1%) children's (89.3%) hospitals. The trend showed an increase in prevalence from 2000 (19.9%) to 2009 (29.6%). Common comorbidities included anomalies in spinal curvature (16.7%), urinary or bladder dysfunction (14.3%), and spinal stenosis/spondylosis (1.4%). Non-routine discharges (3.3%) were significantly higher with advancing age, increasing from 2.2% in those younger than 5 years to 9.0% in those older than 15 years (p < 0.0001). There was a similar increasing trend for complications (6.8% to 13.9%, respectively, p < 0.0001) and average LOS (3.5 to 5.1 days, respectively, p < 0.0001). Hospital charges increased with age from an average of $28,521 in those younger than 5 years to $36,855 in those older than 15 years (p < 0.0001).

CONCLUSIONS

There was a steady trend of increasing operative treatment for TCS over the more recent years. The nationwide analysis was also indicative of an existing disparity, based on age, in complications, outcomes, and charges following TCS surgical correction. Older children tended to have more complications, longer LOS, more non-routine discharges, and higher hospital costs. The results are highly supportive of surgery at a younger age for this condition. Future research should investigate this correlation, especially considering the efforts to control and reduce health care costs.