Olave E, Prates J C, Gabrielli C, Pardi P
Faculty of Medicine, Universidad de la Frontera, Temuco, Chile.
Scand J Plast Reconstr Surg Hand Surg. 1997 Mar;31(1):13-6. doi: 10.3109/02844319709010500.
In the carpal tunnel there are the flexor muscle tendons, their sheaths, and the median nerve. Because its walls are inflexible, any thickening of its components that reduce its area may compress the median nerve. There are many reasons for nerve compression, including persistence of the median artery into adult life. We dissected the arteries in the carpal tunnel of 102 hands of 51 adult cadavers of both sexes, age range 23-77 years, and injected latex into 42 hands. In the carpal tunnel we sought the median artery and the superficial palmar branch of the radial artery. We found the median artery in 23 of 102 cases (23%), and its calibre ranged from 0.7 to 2.7 mm, mean (SD) 1.6 (0.5) mm. In 16 cases it made up part of the superficial palmar arch. The superficial palmar branch of the radial artery was partly responsible for the distal irrigation of the hand in 48 cases (47%); and in three hands (3%) it passed through the carpal tunnel. The external diameters of these vessels were 1.8, 1.9, and 1.8 mm, respectively. These arteries might cause compression of the median nerve and consequently the carpal tunnel syndrome.
在腕管内有屈肌腱、腱鞘和正中神经。由于腕管的壁缺乏弹性，其任何组成部分的增厚导致管腔面积减小，都可能压迫正中神经。神经受压有多种原因，包括正中动脉持续存在至成年期。我们解剖了51具年龄在23 - 77岁之间的成年男女尸体的102只手的腕管内动脉，并向其中42只手注入了乳胶。在腕管内，我们寻找正中动脉和桡动脉的掌浅支。我们在102例中有23例（23%）发现了正中动脉，其管径范围为0.7至2.7毫米，平均（标准差）为1.6（0.5）毫米。在16例中，它构成了掌浅弓的一部分。桡动脉掌浅支在48例（47%）中对手的远端供血起部分作用；在3只手（3%）中，它穿过腕管。这些血管的外径分别为1.8、1.9和1.8毫米。这些动脉可能会压迫正中神经，进而导致腕管综合征。
