Bohac M, Palkovic M, Fedeles J, Hodosy J
Bratisl Lek Listy. 2016;117(9):547-550. doi: 10.4149/bll_2016_101.
Gracilis muscle and its motor nerve belongs to most commonly used flap for facial reanimation. However, it is performed in two steps, which is time consuming. One stage technique can be also performed, but the length of the motor nerve cannot be currently determined before surgery.
The present study was conducted in order to evaluate the body composition on the length and suitability of the motor nerve of gracilis muscle for one stage facial reanimation.
The gracilis flaps along with the motoric nerve were dissected from 20 fresh cadavers (6 females, 14 males). The length of the lower extremity from superior iliac anterior spine to the bottom of the heel and BMI were measured. Regression analysis of lower extremity length and BMI to the actual length of the motor nerve of gracilis flap was performed.
The linear regression analysis showed a positive correlation between the length of the lower limb and the size of the motor nerve length (r = 0.5060, p < 0.05), as well as between the BMI and the size of the motor nerve length (r = 0.5073, p < 0.05). Also, the males had longer motor nerve when compared to females by 13 % (p < 0.05). No difference between females and males in BMI was observed.
The length from the superior iliac anterior spine, BMI and gender seemed to be potential factors that could help to predict the length of the gracilis flap motor nerve for the one stage facial reanimation. However, further studies evaluating other anatomical factors and validating the possible prediction rule for one stage reanimation success are needed (Fig. 3, Ref. 14).
股薄肌及其运动神经是面部重建最常用的皮瓣。然而，该手术分两步进行，耗时较长。也可采用一期技术，但目前术前无法确定运动神经的长度。
本研究旨在评估身体组成因素对股薄肌运动神经长度及一期面部重建适用性的影响。
从20具新鲜尸体（6例女性，14例男性）上解剖股薄肌皮瓣及其运动神经。测量从髂前上棘到足跟底部的下肢长度和体重指数（BMI）。对下肢长度和BMI与股薄肌皮瓣运动神经实际长度进行回归分析。
线性回归分析显示下肢长度与运动神经长度大小呈正相关（r = 0.5060，p < 0.05），BMI与运动神经长度大小也呈正相关（r = 0.5073，p < 0.05）。此外，男性的运动神经比女性长13%（p < 0.05）。未观察到女性和男性在BMI上的差异。
髂前上棘的长度、BMI和性别似乎是有助于预测一期面部重建股薄肌皮瓣运动神经长度的潜在因素。然而，需要进一步研究评估其他解剖因素并验证一期重建成功的可能预测规则（图3，参考文献14）。
