Monllau J C, Hinarejos P, Alvarez P, Alameda F, Ballester J
Department of Orthopaedic Surgery, Hospital Universitari del Mar, Passeig Marìtim 25-29, 08003, Barcelona, Spain.
Int Orthop. 2004 Feb;28(1):7-10. doi: 10.1007/s00264-003-0448-7. Epub 2003 Mar 26.
Twelve adult New Zealand white rabbits were randomly divided into two groups. In group 1, 30% of the central mass of the right patellar tendon was removed. In group 2, 60% was removed. The left knees served as controls. The animals were killed 1 year later. The patella-patellar tendon-tibial tuberosity units of all knees were studied using histological and morphometric analysis. In both groups, the tendons had lengthened. Lengthening average was 2.50 mm in group 1 and 8.17 mm in group 2. In both groups, histology revealed poor alignment of the collagen fibres and high cellularity, although the findings in group 1 were nearer the normal histological pattern. The results suggest that removal of significant portions of the patellar tendon leads to lengthening of the resulting tendon. In clinical practice, it seems prudent to pay attention to the dimensions of the patellar tendon when harvesting a graft.
12只成年新西兰白兔被随机分为两组。在第1组中，切除右侧髌腱中央部分的30%。在第2组中，切除60%。左膝作为对照。1年后处死动物。使用组织学和形态计量学分析对所有膝关节的髌骨-髌腱-胫骨结节单元进行研究。在两组中，肌腱均出现延长。第1组的平均延长长度为2.50毫米，第2组为8.17毫米。在两组中，组织学检查均显示胶原纤维排列不佳且细胞密度高，尽管第1组的结果更接近正常组织学模式。结果表明，切除髌腱的大部分会导致剩余肌腱延长。在临床实践中，在获取移植物时注意髌腱的尺寸似乎是明智的。
