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Trigger Thumb, Trigger Finger and Clasped Thumb.

ABSTRACT: Finger deformities are a common reason for medical observation in children. Subtle clinical differences can have a significant impact on the diagnosis and treatment of these patients. Identification of the basic diagnostic and treatment principles of trigger thumb, trigger finger, and clasped thumb is of paramount importance to all general practitioners, pediatricians, and orthopedic surgeons who are involved in the care of children. The purpose of this article is to review the most important concepts regarding these important topics, focusing on etiology, epidemiology, clinical presentation, diagnosis, treatment and prognosis.

SUBMITTER: Carvalho M

PROVIDER: S-EPMC10969764 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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Trigger Thumb, Trigger Finger and Clasped Thumb.

Carvalho Marcos M Barreto Maria Inês MI Alves Cristina C Soldado Francisco F

Children (Basel, Switzerland) 20240301 3

Finger deformities are a common reason for medical observation in children. Subtle clinical differences can have a significant impact on the diagnosis and treatment of these patients. Identification of the basic diagnostic and treatment principles of trigger thumb, trigger finger, and clasped thumb is of paramount importance to all general practitioners, pediatricians, and orthopedic surgeons who are involved in the care of children. The purpose of this article is to review the most important co ...[more]

PMID: 38539329

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Project description:BackgroundIn humans, the thumb plays a crucial role in producing finger opposition movements. These movements form the basis of several activities of the hand. Hence these movements have been used to study phenomena like prehension, motor control, motor learning, etc. Although such tasks have been studied extensively, the relative contribution of the thumb vis-à-vis the fingers in finger opposition tasks is not well understood. In this study, we investigated the kinematics of thumb and fingers in a simple finger opposition task. Further, we quantified the relative contribution and the movement smoothness aspects and compared these between fingers and thumb.MethodsEight, young healthy participants (four males and four females) were asked to perform a full finger to thumb opposition movement, where they were required to reach for different phalanges of the fingers. Position (X, Y and Z) of individual segments of the four fingers and the thumb were measured with reference to the wrist by a 16-sensor kinematics measurement system. Displacements and velocities were computed. An index, displacement ratio, that quantifies the relative contribution of thumb and fingers was computed from displacement data. Velocity data was used to quantify the smoothness of movement of thumb and fingers.ResultsThe Displacement Ratio showed that contribution of the thumb is higher than contribution of any other target finger or target phalanges, except for the distal phalanx of the index and middle fingers. Smoothness of movement of the thumb was higher than all the finger phalanges in all cases.ConclusionWe conclude that in the task considered (thumb opposition movements to different targets within the hand & fingers), the thumb made a greater relative contribution in terms of displacement ratio and also produced smoother movements. However, smoothness of thumb did not vary depending on the target. This suggests that the traditional notion of the thumb being a special digit when compared to other fingers is true at least for the opposition movements considered in this study.

Dataset Information

Trigger Thumb, Trigger Finger and Clasped Thumb.

Publications

Trigger Thumb, Trigger Finger and Clasped Thumb.

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