UNASSIGNED: A retrospective case series of 10 patients (11 knees) referred between February 2016 and August 2020 due to late recurvatum instability. Exclusion criteria encompassed neuromuscular diseases other than spinal stenosis, prosthetic joint infection, and pre-existing recurvatum deformity. Data, including demographics, medical history, imaging findings, and surgical details, were collected retrospectively. Patient performance was assessed using the Knee Society Score (KSS) at specified postoperative intervals.
UNASSIGNED: The study cohort, exhibiting hyperextension ranging from 11 to 30 degrees, underwent successful revision surgery using rotating hinge knee (RHK) implants after failed conservative measures. Follow-up assessments at 6, 18, and 24 months showed no recurrence of genu recurvatum.
UNASSIGNED: Late-onset genu recurvatum poses a challenge, necessitating surgical intervention. Identifying predisposing factors is crucial, with spinal stenosis emerging as a rare cause. The use of posterior stabilized (PS) implants in primary surgery aligns with higher revision rates, possibly linked to PCL removal. Limited literature explores the spinal-genu recurvatum relationship. A stepwise screening protocol is proposed for high-risk patients, emphasizing history, physical examination, and imaging. Strategic considerations include lower constraining, a tighter extension gap, and potential use of Hinge implants.
■回顾性病例系列,包括2016年2月至2020年8月因晚期复发不稳定而转诊的10例患者(11膝)。排除标准包括除椎管狭窄以外的神经肌肉疾病,假肢关节感染,和预先存在的递归畸形。数据,包括人口统计,病史,影像学发现,和手术细节,是回顾性收集的。在指定的术后间隔使用膝关节协会评分(KSS)评估患者的表现。
■研究队列,表现出11到30度的过度伸展,保守措施失败后,使用旋转铰链膝关节(RHK)植入物进行了成功的翻修手术。在6、18和24个月的随访评估显示没有复发。
■迟发性回复性带来了挑战,需要手术干预。识别诱发因素至关重要,椎管狭窄是一种罕见的病因。在初级手术中使用后稳定(PS)植入物与较高的翻修率一致,可能与PCL移除有关。有限的文献探讨了脊柱-膝曲关系。针对高危患者提出了逐步筛查方案,强调历史,体检,和成像。战略考虑包括较低的约束,更紧密的延伸间隙,以及铰链植入物的潜在用途。