Saxena A, Bareither D
Department of Sports Medicine, Palo Alto Medical Foundation, CA 94301, USA.
Foot Ankle Int. 2000 Jul;21(7):570-2. doi: 10.1177/107110070002100707.
A retrospective review of 63 Magnetic Resonance Image studies (yielding 86 ankles) was conducted to find the incidence of the plantaris tendon. Radiographically, the plantaris tendon was visualized 62.8% of the time. Surgical confirmation of this tendon during 18 achilles surgeries yielded 13 "true positives" and 4 "true negatives". Sensitivity was 92.8%; specificity and positive predictive value was 100%, respectively. As a comparison, forty cadaveric specimens were evaluated as well, with the incidence of the plantaris found to be 97.5%. These findings may be useful when considering MRIs as a screening tool for the presence of plantaris tendon. When axial images were 4 mm or less, the plantaris tendon was more easily visualized. A Chi-squared test examining for differences of axial sections greater than 4 mm was not significant. (P=0.2). This is important if one is to use MRI to screen for the plantaris (for graft purposes).
对63项磁共振成像研究（共86个踝关节）进行回顾性分析，以确定跖肌腱的发生率。在影像学上，跖肌腱可视化的时间占62.8%。在18例跟腱手术中对该肌腱进行手术确认，得到13个“真阳性”和4个“真阴性”。敏感度为92.8%；特异度和阳性预测值分别为100%。作为对比，还评估了40个尸体标本，发现跖肌腱的发生率为97.5%。在将磁共振成像作为跖肌腱存在情况的筛查工具时，这些发现可能会有所帮助。当轴向图像为4毫米或更小时，跖肌腱更容易可视化。一项检验轴向截面大于4毫米差异的卡方检验无显著性差异（P = 0.2）。如果要使用磁共振成像筛查跖肌腱（用于移植目的），这一点很重要。
