UNASSIGNED: A total of 220 consecutive patients who had undergone posterior spinal process-splitting laminoplasty (pSPSL) for C-OPLL between January 2018 and December 2019 were included in this study. Postoperative C5 palsy was defined as deltoid muscle weakness of a grade ≤3 in manual muscle test (MMT). These patients were divided into two groups based on the postoperative development of C5 palsy: patients with C5 palsy (group A) and those without C5 palsy (group B). The clinical and imaging covariates evaluated were age, sex, OPLL type, K-line, foraminal stenosis, gutter malposition, and preoperative spinal cord signal change. Logistic regression was used to analyze the independent risk factors for C5 palsy.
UNASSIGNED: In total, 211 patients (18 in group A and 193 in group B) were enrolled in this study, and the incidence of C5 palsy was 8.53%. Sixteen patients had a MMT of grade 3 and two had an MMT of grade ≤2. During the follow-up period (mean duration: 25.10±6.67 months), the MMT grade rose to 5 in 16 patients, 4 in one patient, and 3 in one patient. Multivariate analysis revealed that malposition of the bony gutter [odds ratio (OR) 11.073, 95% confidence interval (CI): 3.411, 35.948; P<0.001] and C4/5 intervertebral foramen stenosis (OR 8.455, 95% CI: 2.559, 27.936; P<0.001) were independent risk factors for C5 palsy.
UNASSIGNED: The incidence of C5 palsy was 8.53% among patients undergoing pSPSL for C-OPLL. Gutter malposition and C4/5 intervertebral foramen stenosis were identified as risk factors for this complication.
共有220例连续患者在2018年1月至2019年12月期间接受了C-OPLL后路脊柱突劈开椎板成形术(pSPSL)。术后C5麻痹被定义为手动肌肉测试(MMT)中≤3级的三角肌无力。根据C5麻痹的术后发展将这些患者分为两组:C5麻痹患者(A组)和无C5麻痹患者(B组)。评估的临床和影像学协变量为年龄,性别,OPLL类型,K线,椎间孔狭窄,排水沟错位,术前脊髓信号改变。采用Logistic回归分析C5麻痹的独立危险因素。
■总共,211例患者(A组18例,B组193例)纳入本研究,C5麻痹的发生率为8.53%。16名患者的MMT为3级,2名患者的MMT≤2级。在随访期间(平均持续时间:25.10±6.67个月),16名患者的MMT等级上升到5级,4在一个病人中,3在一个病人。多因素分析显示,骨沟错位[比值比(OR)11.073,95%置信区间(CI):3.411,35.948;P<0.001]和C4/5椎间孔狭窄(OR8.455,95%CI:2.559,27.936;P<0.001)是C5麻痹的独立危险因素。
■在接受pSPSL治疗C-OPLL的患者中,C5麻痹的发生率为8.53%。沟错位和C4/5椎间孔狭窄被确定为该并发症的危险因素。