Thumbs up: movements made by the thumb are smoother and larger than fingers in finger-thumb opposition tasks

Kinematics of Thumb Opposition

INTRODUCTION One of the most important hand functions is thumb opposition, which results from flexion, abduction and axial rotation at the carpometacarpal, metacarpophalangeal and interphalangeal joints [1]. The thenar muscles, innervated by the median nerve, are critical for coordinated thumb movements. It is commonly observed that thumb opposition is impaired with median neuropathy [2]. The c...

Thumb and finger sucking.

A neural network for recognizing movement patterns during repetitive self-paced movements of the fingers in opposition to the thumb.

A data glove is a typical input device to control a virtual environment. At the same time it measures movements of wrist and fingers. The purposes of this investigation were to assess the ability of BrainMaker, a neural network, to recognize movement patterns during an opposition task that consisted of repetitive self-paced movements of the fingers in opposition to the thumb. The neural network...

Trigger thumb and finger in pediatric patients

Objectives: Trigger finger in pediatric patients is not as commonly seen as it is in adults. With that, it is ten times less likely to be seen than trigger thumb. Trigger finger usually presents in children less than 8 years old. It may be associated with anatomic, metabolic, inflammatory, and central nerve disorders. Flexion deformity of the finger is reported as the most frequent presentation...

Injuries of the fingers and thumb in the athlete.

Injuries of the fingers and thumb in the athlete are common. Mallet finger, jersey finger, boutonniere deformity, Bennett and Rolando fractures, and gamekeeper's thumb are just a few of the injuries that can occur in athletes. A thorough understanding of the mechanism of injury, osseous and soft tissue abnormalities, imaging features, and treatment is important in the care of athletes. Prompt a...