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Title: Simultaneous or Staged Decompressions for Patients with Tandem Spinal Stenosis.
Author: Sun WZ, Yan X, Yang YL, Song H, Xia ZW, Yang SC, Chen FL, Li WH, Yu ZQ, Liu B, Liu YX, Wang K, Zhang L.
Journal: Orthop Surg; 2021 Jun; 13(4):1149-1158. PubMed ID: 33942985.
Abstract:
OBJECTIVE: To compare the clinical effects of cervical decompression first, lumbar decompression first, or simultaneous decompression of both lesions in the treatment of tandem spinal stenosis (TSS). METHODS: This is a retrospective analysis. From January 2013 to December 2018, 51 TSS patients underwent our surgery and postoperative investigation. Among the 51 subjects, 27 females and 24 males, aged 49-77 years with an average age of 66.3 ± 6.8, were selected. According to the different operation sequences, all patients were divided into three groups. In simultaneous operation group, five patients underwent cervical and lumbar vertebrae surgery at the same time. In first cervical surgery group, 28 patients underwent cervical vertebra surgery first, followed by lumbar spine surgery after a period of recovery. And in first lumbar surgery group, 18 patients underwent lumbar vertebrae surgery first. The choice for neck surgery is posterior cervical single-door vertebroplasty, the surgery of lumber is plate excision and decompression needle-rod system internal fixation. The outcome measures are visual analogue scale (VAS), Japanese Orthopaedic Association cervical (JOA-C) and lumbar (JOA-L) scores, which were assessed at 3 months and 1 year after the operation by telephone interview. In addition, operative time, estimated blood loss, and hospital stay were also recorded. RESULTS: All the patients in the study had surgery performed successfully by the same group of orthopaedic surgeons. The preoperative VAS scores of simultaneous operation group, first cervical surgery group, and first lumbar surgery group were 8.00 ± 1.00, 8.36 ± 0.68, and 8.17 ± 0.71 (P > 0.05). The preoperative JOA-C scores were 7.00 ± 2.35, 6.54 ± 1.53, and 7.83 ± 1.04 (P < 0.05). And the preoperative JOA-L scores were 7.20 ± 2.17, 4.64 ± 2.36, and 5.78 ± 1.22 respectively (P < 0.05). During the final 1-year follow-up, the JOA-C improvement rates of simultaneous operation group, first cervical surgery group, and first lumbar surgery group were 85.68% ± 5.44%, 84.27% ± 5.02%, and 83.34% ± 10.25%, respectively (P > 0.05), and the JOA-L improvement rates were 80.04% ± 3.35%, 81.65% ± 3.74%, and 80.21% ± 4.76% (P > 0.05). The difference among them was not statistically significant. In addition, operation time (OP), blood loss (BL), and hospital stay (HS) in the simultaneous operation group were 245.00 ± 5.00 min, 480.00 ± 27.39 mL, and 16.60 ± 0.55 days, respectively. While those parameters in the first cervical surgery group were 342.50 ± 18.18 min, 528.21 ± 43.97 mL, and 22.75 ± 2.15 days, and in the first lumbar surgery group they were 346.11 ± 24.77 min, 519.44 ± 43.99 mL, and 22.89 ± 1.64 days. The average blood loss in simultaneous operation group was less (P > 0.05); meanwhile, the operation time and hospital stay time were significantly shorter in the simultaneous operation group than in the first cervical surgery group and first lumbar surgery group (P < 0.05). Only one case of fat liquefaction occurred in first cervical surgery group, which healed spontaneously after a regular change of dressing for 1 month. CONCLUSIONS: Under the condition of ensuring the surgical effect, the choice of staged surgery or concurrent surgery according to the patients' own symptoms of cervical and lumbar symptoms could both obtain satisfactory results, and the damage of simultaneous surgery was less than that of staged surgery.

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