Mestdagh H, Bailleul J P, Vilette B, Bocquet F, Depreux R
Anat Clin. 1985;7(1):49-53. doi: 10.1007/BF01654629.
On the basis of 150 dissections the authors show that, on the back of the hand, the tendinous formations ensuring the extension of the fingers can be arranged in four groups of a least two tendons for each finger, excepting the thumb. In the little finger the group comprises a constant tendon, the extensor proper, and two variables, the common extensor and the expansion of the extensor carpi ulnaris. In the index finger the extensor proper and the common extensor nearly always coexist. In the middle finger the great common extensor, sometimes divided, can be accompanied at depth, by an extensor tendon. Finally, in the ring finger, two or three more or less intricate slips are found forming the common extensor. The presence of anastomoses and the numerous slips originating in the tendon-forming band can reduce functional deficiency following the section or rupture of a tendon. On account of these variations the surgeon should operate with caution in tendon transplantations.
基于150例解剖，作者表明，在手部背面，确保手指伸展的腱性结构可分为四组，除拇指外，每个手指至少有两条肌腱。在小指中，该组包括一条恒定的肌腱，即固有伸肌腱，以及两条可变的肌腱，即指总伸肌腱和尺侧腕伸肌扩张部。在食指中，固有伸肌腱和指总伸肌腱几乎总是同时存在。在中指中，大指总伸肌腱有时会分开，在深部可能会伴有一条伸肌腱。最后，在环指中，可发现两三条或多或少复杂的腱束形成指总伸肌腱。吻合支的存在以及源自腱形成带的众多腱束可减少肌腱切断或断裂后的功能缺陷。由于这些变异，外科医生在进行肌腱移植时应谨慎操作。
