Department of Orthopaedics, Peking University First Hospital, 100034, Beijing, China.
BMC Musculoskelet Disord. 2021 Jan 22;22(1):101. doi: 10.1186/s12891-021-03974-7.
To report a mini-open pedicle subtraction osteotomy (PSO) technique, to summarize the 2-year follow-up results of 25 patients, and to describe a modified operating table which allows the osteotomy to be closed in a more controllable manner.
We retrospectively reviewed the records of patients with AS who received one-level mini-open PSO between July 2015 and January 2018. The 25 patients with complete medical records and 2-year radiographic follow-up were included in the analysis. Estimated blood loss, operation time, incision length, complications, bed rest period, and length of hospitalization were extracted from the medical records and recorded.
The mean age of the 25 patients (22 males and 3 females) was 39.5 years. The average global kyphosis(GK) decreased from 70.2° before surgery to 22.3° after surgery; the average C7- sagittal vertical axis (C7-SVA) decreased from 15.5 cm before surgery to 5.1 cm after surgery; the average pelvic incidence(PT) decreased from 37.8° before surgery to 22.5° after surgery. The average length of the incision was 10.2 cm. The average surgical time was 263.0 min, the average estimated blood loss was 840.0 ml, and the average time to mobilization was 4.1 days.
The current report shows that one-level PSO can be performed through an incision of about 10 cm. The one-level mini-open PSO could be superior to traditional PSO surgery with respect to cosmetic outcomes. Further comparative studies are necessary to evaluate the current and conventional techniques.
报告一种微创经椎弓根截骨术（PSO）技术，总结 25 例患者的 2 年随访结果，并描述一种改良手术台，使截骨术能够以更可控的方式闭合。
我们回顾性分析了 2015 年 7 月至 2018 年 1 月接受单节段微创经椎弓根 PSO 的 AS 患者的病历。对有完整病历资料和 2 年影像学随访的 25 例患者进行分析。从病历中提取出血量、手术时间、切口长度、并发症、卧床休息时间和住院时间并记录。
25 例患者（22 例男性和 3 例女性）的平均年龄为 39.5 岁。平均全局后凸角（GK）从术前的 70.2°降至术后的 22.3°；平均 C7 矢状垂直轴（C7-SVA）从术前的 15.5cm 降至术后的 5.1cm；平均骨盆入射角（PT）从术前的 37.8°降至术后的 22.5°。切口平均长度为 10.2cm。平均手术时间为 263.0min，平均估计出血量为 840.0ml，平均下床活动时间为 4.1 天。
目前的报告表明，单节段 PSO 可以通过约 10cm 的切口进行。与传统 PSO 手术相比，单节段微创经椎弓根 PSO 可在美容效果方面具有优势。有必要进行进一步的比较研究来评估当前和传统技术。
