Solano M, Purinton P T, Chambers J N, Munnell J F
Department of Anatomy and Radiology, University of Georgia, Athens 30602, USA.
Am J Vet Res. 1995 Jun;56(6):731-5.
Blood flow to the semitendinosus muscle was studied in 12 dogs after ligation of either the proximal or distal vascular pedicle and elevation of the muscle from its normal position. Using 15-micron-diameter radioactive microspheres, flow was measured at rest, 6 and 18 days after muscle elevation and pedicle ligation. Mean blood flow in the proximal region of the muscle 6 and 18 days after ligation of the caudal gluteal (proximal) pedicle was not significantly different from mean blood flow calculated in the middle and distal regions of the muscle. There was also no significant difference in mean blood flow among proximal, middle, and distal regions of the muscle, 6 and 18 days after ligation of the distal caudal femoral (distal) pedicle. There was significantly (P < 0.05) increased blood flow between group-A (ligation of caudal gluteal artery) and group-C (operated-control) muscles, 6 and 18 days after surgery. There was no loss of muscle fiber striations or nuclei, or presence of fibrous tissue that might have indicated ischemic necrosis in any of the experimental groups. These results indicate that the entire semitendinosus muscle can be sustained by the blood flow from either of its 2 vascular pedicles, which reinforces its potential as a muscle flap.
在12只犬中，研究了半腱肌在近端或远端血管蒂结扎以及肌肉从正常位置抬起后的血流情况。使用直径15微米的放射性微球，在肌肉抬起和血管蒂结扎后静息状态下、第6天和第18天测量血流。结扎臀后（近端）血管蒂后第6天和第18天，肌肉近端区域的平均血流与肌肉中部和远端区域计算出的平均血流无显著差异。结扎股后（远端）血管蒂后第6天和第18天，肌肉近端、中部和远端区域之间的平均血流也无显著差异。术后第6天和第18天，A组（臀后动脉结扎）和C组（手术对照）肌肉之间的血流显著增加（P<0.05）。在任何实验组中，均未出现肌纤维条纹或细胞核丢失，也未出现可能提示缺血坏死的纤维组织。这些结果表明，整个半腱肌可以由其两个血管蒂中的任何一个的血流维持，这增强了其作为肌瓣的潜力。
