Length–tension relationship of the posterior deltoid to triceps transfer in C6 tetraplegic patients
Length–tension relationship of the posterior deltoid to triceps transfer in C6 tetraplegic patients
复制标题
C6四肢瘫痪患者三角肌后束与三头肌转移的长度-张力关系
DOI：
10.1038/sc.1993.6
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Y. Allieu
中科院分区：
文献类型：
--
作者：
E. Rabischong;P. Benoit;M. Benichou;Y. Allieu
我们评估的长度-张力关系的后三角肌三头肌转移在8个四肢瘫痪（n = 11转让），并比较了结果的长度-张力关系的正常三头肌测量的检查样本组成的9个健全的，右利手的妇女。我们设计了一个装置来锁定手臂和前臂，并使用力传感器来评估扭矩输出等长。在6种不同长度（肘关节屈曲130、110、90、70、45和0°）下测试肌肉，肩部外展90°。正如预期的那样，转移行为不同于正常的三头肌。患者记录的平均最大扭矩为7.8 Nm，而对照样本为27 Nm。当比较时，绝对值（即用扭矩的维度表示的值）在组间具有显著差异（0.00001 < p < 0.002）。该关系的表达（即相对值表示为最大值的百分比）显示在肘关节屈曲90 °和70°时存在显著的统计学差异（p < 0.002）;患者在130°时记录到峰值扭矩，而对照样本在110°时记录到峰值扭矩，在110°和70°之间存在平台。另一方面，如果检查样本的受试者之间的长度-张力关系相当相似，则患者之间存在巨大差异;外科医生给出的初始张力似乎代表了一个变量，如果没有专用于该任务的器械，则难以控制。
We assessed the length-tension relationship of the posterior deltoid to triceps transfer in 8 tetraplegics (n = 11 transfers) and compared the results to the length-tension relationship of the normal triceps measured in a check sample composed of 9 able bodied, right handed women. We designed a device to lock the arm and forearm and used a force transducer to assess the torque output isometrically. The muscle was tested at 6 different lengths (130, 110, 90, 70, 45 and 0° of elbow flexion) with the shoulder abducted at 90°. As expected, the transfer behaved differently from the normal triceps. The mean maximum torque recorded was 7.8 Nm in patients while it was 27 Nm in the check sample. When compared, the absolute values (ie values expressed with a dimension of torque) were significantly different between groups (0.00001 < p < 0.002). The expression of this relation (ie the relative values expressed as percentage of maximum values) revealed significant statistical differences (p < 0.002) at 90 and 70° of elbow flexion; the peak torque was recorded at 130° in patients while it was recorded at 110° in the check sample, with a plateau between 110° and 70°. On the other hand, if the length–tension relationship was fairly similar among subjects of the check sample, it exhibited tremendous differences among patients; it seemed that initial tension given by the surgeon represented a variable difficult to control without a device dedicated to that task.