Anatomy, Physiology, and Functional Restoration of the Thumb

Emerson, Eric; Krizek, Thomas J.; Greenwald, Daniel P.

doi:10.1097/00000637-199602000-00014

Cited by 53 publications

(36 citation statements)

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“…For instance, the opposition mechanism of the thumb is assessed through anatomical analysis of hand skeletal bones [7], or analysis of the variability of the trapeziometacarpal motion [8]. It is well acknowledged that the loss of the thumb corresponds to the loss of 40% of the hand function [9], however, a common agreement on the mechanics of the human thumb opposition has not been reached yet [10].…”

Section: Introductionmentioning

confidence: 99%

The Role of the Thumb: Study of Finger Motion in Grasping and Reachability Space in Human and Robotic Hands

Cotugno

Althoefer

Nanayakkara

2017

IEEE Trans. Syst. Man Cybern, Syst.

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Abstract-It is well acknowledged that the opposing thumb granted humans advanced manipulation capabilities. However, such feature is not statistically quantified and its representation is not formally addressed in robotics yet. This paper studies whether the displacement of the opposing thumb in humans is a determining factor for shaping the grip. Using statistical analysis of the variability of motion capture data from the GRASP database, we found that the displacement of the thumb plays a leading role on the shaping of the grip, independently from the specific object being grasped. Furthermore, we map and compare the reachability spaces of the human thumb and two state-of-the-art robotic thumbs -the Shadow and the iCub hands. We conclude that the kinematics of robotic thumbs does not evenly span the reachability space of the human thumb, favouring precision grasping motions. Hence our findings contributes to the discussion of the optimal modelling of robotic hands.

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Section: Introductionmentioning

confidence: 99%

The Role of the Thumb: Study of Finger Motion in Grasping and Reachability Space in Human and Robotic Hands

Cotugno

Althoefer

Nanayakkara

2017

IEEE Trans. Syst. Man Cybern, Syst.

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“…According to the biomechanics of the hand, the thumb contributes to a minimum of 40 percent of the overall hand function and should be a priority in the reconstructive sequence. 33,34 Following this principle, in case 2, in which three fingers were salvageable, the ring finger was first replanted heterotopically, which was most appropriate in terms of remaining function and length, to restore the thumb. The middle finger also had to be replanted heterotopically in place of the ring finger, to ensure a functional webspace and avoid the gap between the remaining long fingers.…”

Section: Discussionmentioning

confidence: 99%

Heterotopic Procedures in Mutilating Hand Injuries

Kokkoli

Spyropoulou

Shih

et al. 2015

Plastic and Reconstructive Surgery

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“…The main goals when reconstructing the thumb include reestablishing function (sensation and opposition) and appearance. [22][23][24][25] Until now the only method of reconstruction that can reproduce all these goals is the microsurgical digital transfer, using the great toe or the second toe. Multiple reports have been published making reference to thumb reconstruction with digital transfers, where excellent appearance and function were achieved.…”

Section: Discussionmentioning

confidence: 99%