残留腓骨长肌腱再生的MRI观察

MRI observation on regeneration of residual peroneus longus tendon

[目的]通过观察磁共振图像以分析残留腓骨长肌腱的再生能力。[方法]选取19位取前侧半腓骨长肌腱进行韧带重建的患者,于术前、术后次日、术后1、3个月、1、2年定期行磁共振检查,获取其磁共振影像资料,将获得的Dicom格式图像导入RadiAnt DICOM Viewer软件,利用该软件定位取腱点,获得取腱点远近端各2 cm处轴位图像,测量腓骨长肌腱横截面积,同术前同一水平腓骨长肌腱横截面积相比较,分析其再生情况。[结果]术后残留腓骨长肌腱连续性良好,未发生断裂。术后3个月时取腱点近端残留肌腱再生迅速,可达术后85%左右,远端处肌腱也可见增粗。术后1年时取腱点远近端均增粗明显,超过术前水平,术后2年时基本恢复到术前水平。[结论]残留腓骨长肌腱具有较强的再生能力,纵向前侧半腓骨长肌腱适合用作腱性移植物。

[Objective] To observe regenerative capacity of the residual peroneus longus tendon secondary to anterior half tendon harvested by magnetic resonance image. [Methods] A total of 19 patients had anterior half peroneus longus tendon harvested for single-bundle anterior cruciate ligament reconstruction. Magnetic resonance examinations were performed regularly before operation, the next day after operation, 1 month, 3 months, 1 year and 2 years after operation to obtain their magnetic resonance imaging data. The Dicom format images obtained were imported into RadiAnt DICOM Viewer software, and the tendon points were located using the software to obtain axial images at2cm to the distal and proximal ends of the tendon harvested, and the cross-sectional area of the peroneus longus tendon was measured,Compared with the cross-sectional area of peroneus longus tendon at the same level before operation, its regeneration was analyzed. [Results] All the patients remained good continuity of the residual peroneus longus tendon without rupture on MRIs. At 3 months after operation, the residual ligament harvested at the proximal end regenerated rapidly, up to 85% of the original cross sectional area, while which at the distal end was also thickened. At 1 year after operation, the proximal and distal ends of the tendon harvested were thickened significantly, exceeding the preoperative level, and basically recovered to the preoperative level at 2 years after operation. [Conclusion] The residual peroneus longus tendon has a strong regenerative capacity, therefor the anterior half of the tendon is suitable tendon autograft for clinical needs.