Bone tunnel enlargement after anterior cruciate ligament reconstruction with the hamstring autograft and endobutton fixation technique - A clinical, radiographic and magnetic resonance imaging study with 2 years follow-up
Bone tunnel enlargement after anterior cruciate ligament reconstruction with the hamstring autograft and endobutton fixation technique - A clinical, radiographic and magnetic resonance imaging study with 2 years follow-up
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DOI：
10.1007/s001670050166
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发表时间：
1999-09-01
影响因子：
3.8
通讯作者：
Tallroth, K
中科院分区：
文献类型：
--
作者：
Jansson, KA;Harilainen, A;Tallroth, K
本研究旨在描述采用半腱肌和股薄肌腱endobutton（STG-endobutton）固定技术重建前交叉韧带（ACL）后，X线片检测到骨隧道扩大的对比增强磁共振成像（MRI）表现。术后3个月（n = 1）、1年（n = 1）和2年（n = 12）检查了14例接受STG endobutton ACL重建术的患者。年龄和性别匹配的组采用骨-髌腱-骨（BTB）自体移植物ACL重建，随访时间相似，作为对照组。获得临床检查、松弛和等速肌肉扭矩测量、前后位和侧位X线片数据，并收集膝关节评分（Lysholm和Tegner）。STG-endobutton组使用1.5-T成像仪进行对比增强MRT。两组在临床结果、稳定性试验或膝关节评分方面无统计学差异。在STG-endobutton组中，在2年随访时，前后位X线片上检测到的平均股骨和胫骨隧道直径分别增加了33%和23%。在MRI上，韧带移植物本身是网状的。造影剂增强，而STG移植物束内和周围的血管周围组织显示轻度造影剂增强。总之，MRI结果表明，增强的血管周围组织积聚在STG移植物内和周围，与隧道扩张相关。尽管在随访X线片上观察到显著的骨隧道扩大，但STG Endobutton膝关节稳定，患者满意。
The aim of this study was to describe the contrast-enhanced magnetic resonance imaging (MRI) appearance of bone tunnel enlargement detected on radiography after anterior cruciate ligament (ACL) reconstruction with semitendinosus and gracilis tendon endobutton (STG-endobutton) fixation technique. Fourteen patients with a STG-endobutton ACL reconstruction were examined 3 months (n = 1), 1 year (n = 1) and 2 years (n = 12) postoperatively. An age- and sex-matched group with a bone-patellar tendon-bone (BTB) autograft ACL reconstruction with similar follow-up was taken as control. Data on clinical examination, laxity and isokinetic muscle torque measurements, anteroposterior and lateral view radiography were obtained, and knee scores (Lysholm and Tegner)were collected. Contrast-enhanced MRT was performed in the STG-endobutton group with a 1.5-T imager. There were no statistical differences between the groups with respect to clinical findings, stability tests, or knee scores. In the STG-endobutton group the average femoral and tibial bone tunnel diameter detected on anteroposterior view radiography had increased at 2-year follow-up by 33% and 23%, respectively. On MRI the ligamentous graft itself was net. enhanced by the contrast medium whereas periligamentous tissue within and around the STG graft bundles showed mild contrast enhancement. In conclusion, the MRI results suggest that enhancing periligamentous tissue accumulated in and around the STG graft associated with the tunnel expansion. In spite of the significant bone tunnel enlargement observed on the follow-up radiography the STG-endobutton knees were stable and the patients satisfied.