Jack T. Stern

TL;DR: A comparison of NCMA to included angle, both calculated on manual and pedal proximal phalanges of humans, apes, some monkeys, and the Hadar fossils, revealed that these two different measures of curvature are highly correlated and result in very similar distributional patterns.

TL;DR: It is suggested that Old World monkeys' large size and/or terrestrial habits have made them less adept at arboreal locomotion, and therefore most likely to utilize auxiliary balancing mechanisms.

TL;DR: A telemetered electromyographic study to determine any special role of the most cranial part of the pectoralis major in comparison to its caudal part, and to the deltoid, during vertical climbing, pronograde quadrupedalism, and armswinging in Ateles, Lagothrix, Alouatta, and Hylobates shows that the cranial pectorais major possesses a role not shared by the caUDal fibers: initiation

TL;DR: An EMG analysis of supraspinatus function is reported on showing that the muscle does not act as a brachial protractor during quadrupedalism, even in the relatively cursorial vervet monkey.

TL;DR: 3-D kinematic data are fundamental to a comprehensive understanding of the mechanics, energetics and control of chimpanzee bipedalism and indicate that humans walk with a more stable pelvis than chimpanzees, especially in tilt and rotation.