Dorsal Digital Expansion || Upper Limb Anatomy || First Year MBBS || Anatomy lectures by Ashish


Summary

A detailed overview of dorsal digital expansion and its components like flexion and extension compartments is provided in the video. The discussion includes the functions of these compartments, muscle attachments, extension of the metacarpophalangeal joint, and the triangularis erosion of extensor. Additionally, the video explains the proximal and distal flexing actions in hand muscles, as well as the formation and role of lateral bands and tendon connections in hand movements.


Introduction

Introduction to the topic of dorsal digital expansion and its components like flexion, extension compartments, and joint actions.

Flexion and Extension Compartments

Explanation of flexion and extension compartments, their functions, and how muscles attach to them.

Meta-Carpophalangeal Joint Extension

Discussion on the extension of the metacarpophalangeal joint, including the anatomy and muscle actions involved.

Triangularis Erosion of Extensor

Explanation of the triangularis erosion of extensor and its functioning with respect to muscle attachments.

Proximal and Distal Flexing

Demonstration and explanation of the proximal and distal flexing actions in the hand muscles.

Lateral Band and Tendon Connections

Explanation of the lateral band and tendon connections in hand movements, including the formation of lateral bands.

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