Oishi Motoharu, Ogihara Naomichi, Endo Hideki, Komiya Teruyuki, Kawada Shin-Ichiro, Tomiyama Tae, Sugiura Yosuke, Ichihara Nobutsune, Asari Masao
First Department of Anatomy, School of Veterinary Medicine, Azabu University, 1-17-71, Fuchinobe, Sagamihara, Kanagawa 229-8501, Japan.
J Vet Med Sci. 2009 Jun;71(6):821-4. doi: 10.1292/jvms.71.821.
We dissected the hindlimb of a female western lowland gorilla and determined the muscle dimensions (mass, fascicle length, and physiological cross-sectional area: PCSA). Comparisons of the muscle parameters of the measured gorilla with corresponding reported human data demonstrated that the triceps surae muscles were larger and had more capacity to generate force than the other muscle groups in both species, but this tendency was more prominent in the human, probably as an adaptation to strong toe-off during bipedal walking. On the other hand, PCSAs of the extrinsic pedal digital flexors and digiti minimi muscles were larger in the western lowland gorilla, suggesting that the foot, particularly the fifth toe, has a relatively high grasping capability in the lowland gorilla.
我们解剖了一只雌性西部低地大猩猩的后肢，并测定了肌肉尺寸（质量、肌束长度和生理横截面积：PCSA）。将测量的大猩猩的肌肉参数与相应报道的人类数据进行比较，结果表明，在两个物种中，腓肠肌比其他肌肉群更大，产生力量的能力更强，但这种趋势在人类中更为明显，这可能是对双足行走过程中强力蹬离动作的一种适应。另一方面，西部低地大猩猩的外在足趾屈肌和小趾展肌的PCSA更大，这表明在低地大猩猩中，足部，尤其是第五趾，具有相对较高的抓握能力。
