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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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Arch Orthop Trauma Surg:Press‑Fit‑Hybrid®技术与干涉螺丝钉技术重建前交叉韧带术后再断裂率和半月板损伤的比较

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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?

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