股四头肌和髌腱形态结构的比较分析：一项描述性实验室研究。
Comparative analysis of the morphologic structure of quadriceps and patellar tendon: a descriptive laboratory study.
作者信息
Hadjicostas Panayiotis T, Soucacos Panayotis N, Berger Irina, Koleganova Nadezda, Paessler Hans H
机构信息
Department of Pathology, University of Heidelberg, Germany.
出版信息
Arthroscopy. 2007 Jul;23(7):744-50. doi: 10.1016/j.arthro.2007.01.032.
PURPOSE
The difference in ultimate strength between the quadriceps and patellar tendon could be reflected by different morphologic features.
METHODS
Standardized samples of quadriceps and patellar tendons were harvested from 20 cadavers and were investigated via light and electron microscopy, immunohistochemistry, and morphometry. The thickness of collagen fibrils, fibril-interstitium ratio, density of blood vessels, density of fibroblasts, and distribution of collagen fibrils were analyzed.
RESULTS
In comparison with the patellar tendon, the quadriceps tendon showed a significantly higher fibril-interstitium ratio (P = .0004) and a higher fibroblast density (P = .0011). No differences regarding the thickness of collagen fibrils, density of blood vessels, and distribution of fibrils were found.
CONCLUSIONS
The quadriceps tendon graft can provide approximately 20% more collagen than the patellar tendon graft with the same thickness. This fact can play an important role in the better ultimate strength of the quadriceps tendon.
CLINICAL RELEVANCE
The detailed anatomic description of the quadriceps tendon and patellar tendon explains the difference in their ultimate strength.
目的
股四头肌肌腱和髌腱之间极限强度的差异可通过不同的形态学特征反映出来。
方法
从20具尸体上获取股四头肌肌腱和髌腱的标准化样本，通过光学显微镜和电子显微镜、免疫组织化学及形态测量学进行研究。分析胶原纤维的厚度、纤维间质比、血管密度、成纤维细胞密度以及胶原纤维的分布。
结果
与髌腱相比，股四头肌肌腱的纤维间质比显著更高（P = .0004），成纤维细胞密度也更高（P = .0011）。在胶原纤维厚度、血管密度和纤维分布方面未发现差异。
结论
相同厚度的股四头肌肌腱移植物比髌腱移植物可提供约20%更多的胶原蛋白。这一事实在股四头肌肌腱更好的极限强度方面可发挥重要作用。
临床意义
股四头肌肌腱和髌腱的详细解剖描述解释了它们极限强度的差异。
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