Maharaja Agrasain Hospital, Jessaram Hospital, Delhi, India.
Plast Reconstr Surg. 1996 Feb;97(2):420-6. doi: 10.1097/00006534-199602000-00022.
Superficial ulnar artery is a known abnormality. It replaces the normal ulnar artery and has a superficial course. Its accidental division during the raising of the radial forearm flap can seriously jeopardize hand circulation. The presence of this vessel can be diagnosed preoperatively by careful palpation, and its course can be confirmed by vascular Doppler. This abnormality was found in 9.38 percent of upper limbs in cadaver dissections. A similar incidence of 9.12 percent was observed in clinical practice. Superficial ulnar artery gives several good-sized fasciocutaneous branches in the forearm. A type C fasciocutaneous flap, similar to a radial forearm flap, can be raised with safety on this anomalous vessel. Over the past 4 years, six such flaps have been raised. The largest fap was 24 x 12 cm. The flaps can be made neurosensory. Palmaris longus muscle can be raised with the flap for bulk or as an active motor unit. The extralong pedicle with good-sized vessels makes free-flap transfer safe. The donor site heals uneventfully. The presence of this abnormality can be a trap to an unsuspecting surgeon but is in fact a boon if diagnosed in time.
尺侧浅动脉是一种已知的异常情况。它替代了正常的尺动脉，走行表浅。在前臂桡侧皮瓣掀起过程中意外切断该动脉会严重危及手部血运。术前通过仔细触诊可诊断该血管的存在，其走行可通过血管多普勒证实。在尸体解剖中，9.38%的上肢发现有这种异常。在临床实践中观察到的类似发生率为9.12%。尺侧浅动脉在前臂发出几条粗大的筋膜皮支。一种C型筋膜皮瓣，类似于前臂桡侧皮瓣，可安全地在这条异常血管上掀起。在过去4年里，已掀起6个这样的皮瓣。最大的皮瓣为24×12厘米。这些皮瓣可制成神经感觉皮瓣。掌长肌可与皮瓣一起掀起以增加体积或作为一个主动运动单位。带有粗大血管的超长蒂使游离皮瓣转移安全。供区愈合良好。这种异常情况的存在对毫无防备的外科医生可能是个陷阱，但如果及时诊断，实际上是一件幸事。
