半月板同种异体移植的长期软骨保护作用:一项 10 至 14 年的随访研究

2022-01-16 MedSci原创 MedSci原创

半月板异体移植(MAT)的长期软骨保护作用及其对半月板切除术的优越性鲜有报道。

半月板异体移植(MAT)的长期软骨保护作用及其对半月板切除术的优越性鲜有报道。

在此,研究者提出一个假设,并就此开展队列研究,即与半月板缺失的膝关节相比,MAT会减少骨关节炎(OA)的进展。移植物的挤压距离将强烈影响MAT的软骨保护作用。

图1文章来源

该研究共有17个接受MAT的膝关节作为MAT组进行随访。根据磁共振成像(MRI)冠状切面上3毫米的挤压情况,MAT组被进一步分为非挤压亚组(n = 9)和挤压亚组(n = 8)。

另有26名在同一时期接受半月板切除术的连续患者作为ME组进行随访。健康对照组包括从MAT和ME组中选择的健康对侧腿(n = 27)。

关节间隙宽度(JSW)在X光片上被测量。使用T2映射序列的三维MRI定量分析软骨变性和半月板异体移植在5个方向(0°、45°、90°、135°和180°)的挤出情况。根据MRI扫描中软骨病变的大小和程度,计算软骨变性指数(CDI)。分析了CDI增加与挤压距离之间的相关性。

图2(A,B)通过3维磁共振成像在5个径向测量绝对距离(a)和相对挤压百分比(a/b ×100%)。(C) T2 映射序列上的感兴趣区域。测量中央负重部位软骨的T2值。

结果显示,平均随访时间为11.3年(范围为10-14年)。

图3 半月板同种异体移植 (MAT) 组、MAT 非挤压亚组、MAT 挤压亚组和半月板切除术组(红色区域)中股骨和胫骨软骨的软骨病变进展。总体而言,与半月板切除术相比,MAT 在长期软骨保护方面具有中等优势。非挤压半月板的软骨保护作用接近于天然半月板,而挤压> 3 mm的同种异体半月板完全失去其功能,与半月板切除术相同

与ME组相比,MAT组在软骨保护方面具有中度优势,JSW变窄(0.58±0.66毫米)和CDI增加(1132±1589)较少(JSW变窄。1.26 ± 1.13 mm, P = .025; CDI增加。2182 ± 1958, P = .079).

挤压组的JSW变窄(0.71±0.80mm;P=0.186)和CDI增加(2004±1965;P=0.830)与ME组接近,表明3mm的挤压导致半月板软骨保护作用完全丧失。

非挤压组的JSW变窄(0.48±0.48mm;P=0.042)和CDI增加(358±249;P=0.011)明显少于ME组。

健康对照组的JSW变窄为0.22±0.27毫米。挤压亚组的软骨T2值与ME组相似,有更多的OA特征,而非挤压亚组的T2值则更接近健康对照组。

在多变量回归模型中,90°方向的挤压距离(P=0.002)和随访时间(P=0.019)显著影响CDI的增加。与其他单个方向相比,45°、90°和135°方向的平均挤压距离能更好地预测软骨保护作用。

综上述,从长远来看,与半月板切除术相比,MAT在长期的软骨保护方面有一定的优势。移植物的挤压距离强烈影响MAT的软骨保护效果。无挤压的半月板异体移植的软骨保护作用接近于原生半月板,而挤压大于3mm的异体移植在半月板切除后完全失去了功能,类似于半月板切除术。

 

原始文章:

Wang DY, Zhang B, Li YZ, Meng XY, Jiang D, Yu JK. The Long-term Chondroprotective Effect of Meniscal Allograft Transplant: A 10- to 14-Year Follow-up Study. Am J Sports Med. 2022 Jan;50(1):128-137. doi: 10.1177/03635465211054022. Epub 2021 Nov 19. PMID: 34797194.

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对于重建前交叉韧带(ACL)的首选手术方式,目前尚无共识,本文对200例患者进行回顾性分析,假设PressFit-Hybrid技术在再破裂率和继发性半月板病变方面比2015年使用的干涉螺钉技术产生更好

European Radiology:T2*mapping在显示膝骨关节炎患者早期半月板异常中的价值

传统的MRI虽然是揭示半月板异质性的最有价值的影像学方法,对临床诊断和治疗也有很大帮助,但由于半月板高度胶原结构中水的T2时间很短(在1.5T下约5-8ms),可能会导致T2的高估。

膝关节各种损伤的MRI表现

膝关节各种损伤的MRI表现

半月板损伤的MRI分级

半月板损伤的MRI分级(0-III级)

这个棘手的膝盖损伤,女排国手也深受困扰…我们该怎么办?

一般上年纪才会出现的“半月板之痛”——半月板撕裂,怎么越来越“普遍”了呢?

关节镜下改良外-内垂直缝合术修复半月板损伤

半月板破裂是一种较为常见的膝部疾患。近年来半月板的功能越来越受到重视,各种半月板破裂的缝合技术也日益成熟。我院于2002年8月至2004年10月对46例半月板损伤患者行关节镜下改良外-内垂直修补术,取得满意疗效,现报告如下。1 临床资料1. 1 一般资料:本组患者46例,男29例,女17例;年龄13~28岁,平均19岁。内侧半月板损伤38例, 外侧半月板损伤8例。损伤均为半月板体部与关节囊结合