Guelinckx P J, Faulkner J A
Department of Physiology, University of Michigan Medical School, Ann Arbor.
Plast Reconstr Surg. 1992 Feb;89(2):290-8. doi: 10.1097/00006534-199202000-00015.
Experiments were performed on 20 New Zealand White male rabbits. Our hypotheses were that (1) latissimus dorsi (LTD) muscles transplanted into the site of a bipennate rectus femoris (RFM) muscle with neurovascular repair would retain their parallel-fibered structure and (2) the parallel-fibered structure of latissimus dorsi grafts would reduce their total fiber cross-sectional area and adversely affect force development relative to that of bipennate rectus femoris grafts and muscles. Compared with their respective donor muscles, 120 to 150 days after grafting, latissimus dorsi and rectus femoris grafts showed no change in the number of fibers and a decrease in the mean single-fiber cross-sectional area to approximately 70 percent. The latissimus dorsi grafts, which remained parallel-fibered, developed maximum forces 34 and 23 percent of the values for fully activated rectus femoris grafts and muscles, respectively. The deficit in the maximum force of the latissimus dorsi grafts resulted primarily from the smaller total-fiber cross-sectional area as a result of the parallel-fibered structure.
对20只新西兰雄性白兔进行了实验。我们的假设是：（1）移植到双羽状股直肌（RFM）部位并进行神经血管修复的背阔肌（LTD）肌肉将保持其平行纤维结构；（2）背阔肌移植物的平行纤维结构将减小其总纤维横截面积，并相对于双羽状股直肌移植物和肌肉对力量发展产生不利影响。与各自的供体肌肉相比，移植后120至150天，背阔肌和股直肌移植物的纤维数量没有变化，平均单纤维横截面积减少至约70%。保持平行纤维结构的背阔肌移植物分别产生的最大力量为完全激活的股直肌移植物和肌肉力量值的34%和23%。背阔肌移植物最大力量的不足主要是由于平行纤维结构导致总纤维横截面积较小。
