Degner D A, Lanz O I, Walshaw R
Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, USA.
Vet Surg. 1996 Nov-Dec;25(6):463-70. doi: 10.1111/j.1532-950x.1996.tb01444.x.
The purpose of the anatomical study was to identify potential myoperitoneal microvascular free flaps, in dogs, that are based on a single artery and vein. The angiosomes of the right deep circumflex iliac artery and left phrenicoabdominal (cranial abdominal) artery were evaluated in six medium-sized canine cadavers. The right deep circumflex iliac artery and left phrenicoabdominal (cranial abdominal) artery were injected with a mixture of barium and latex (equal parts). The entire right and left transversus abdominis muscles were dissected from the abdominal wall and radiographed. The angiograms of the deep circumflex iliac artery showed poor arborization of the vessels within the transversus abdominis muscle in all six cadavers. The angiograms of the phrenicoabdominal (cranial abdominal) artery showed consistent filling of the vascular bed of the cranial half of the transversus abdominis muscle flap in all six dogs. The vascular pedicle lengths and the diameter of the arteries and veins of both the deep circumflex iliac and phrenicoabdominal (cranial abdominal) myoperitoneal free flaps were found to be acceptable for microvascular anastomosis. The deep circumflex iliac flap was unacceptable because of inadequate vascular perfusion. The cranial abdominal artery had a consistent, large branch that supplied the cranial half of the transversus abdominis muscle, thereby making a myoperitoneal flap supplied by this vessel a potentially useful free flap. An 8-year-old male, neutered, mixed-breed dog was evaluated for possible repair of a large defect of the hard palate. Previous operations, using local tissue flaps, had been unsuccessful. A myoperitoneal free flap, based on the right cranial abdominal artery, and consisting of the cranial portion of the transversus abdominis muscle, was used successfully to reconstruct the hard palate. Migrating epithelium from the edges of the wound covered the myoperitoneal flap by 10 weeks after surgery. Therefore, the cranial abdominal myoperitoneal free flap can be considered for reconstruction of intra-oral defects that cannot be repaired using conventional local flap techniques.
这项解剖学研究的目的是在犬类中识别基于单一动静脉的潜在肌腹膜微血管游离皮瓣。在六只中型犬类尸体中评估了右髂深动脉和左膈腹（颅腹）动脉的血管体。向右髂深动脉和左膈腹（颅腹）动脉注射钡剂和乳胶的混合物（等量）。将整个左右腹横肌从腹壁分离并进行放射照相。髂深动脉的血管造影显示，在所有六具尸体中，腹横肌内的血管分支不良。膈腹（颅腹）动脉的血管造影显示，在所有六只犬中，腹横肌皮瓣颅侧半的血管床持续充盈。发现髂深和膈腹（颅腹）肌腹膜游离皮瓣的血管蒂长度以及动静脉直径均适合微血管吻合。由于血管灌注不足，髂深皮瓣不可用。颅腹动脉有一个持续存在的大分支，供应腹横肌的颅侧半，因此由该血管供应的肌腹膜皮瓣可能是一种有用的游离皮瓣。对一只8岁的雄性去势混血犬进行评估，以确定是否可能修复硬腭的大缺损。此前使用局部组织皮瓣的手术均未成功。基于右颅腹动脉、由腹横肌颅侧部分组成的肌腹膜游离皮瓣成功用于重建硬腭。术后10周，伤口边缘迁移的上皮覆盖了肌腹膜皮瓣。因此，对于无法使用传统局部皮瓣技术修复的口腔内缺损，可考虑使用颅腹肌腹膜游离皮瓣进行重建。
