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Aug 13, 2018 · A proximal phalanx (plural: phalanges) is one of the tubular long bones [11] located in the bottom row of the phalanges or finger bones [1]. Each proximal phalanx has a head, a body/shaft, and a base.
Nov 13, 2023 · These muscles carry out their functions via their direct attachments to the bases of the proximal phalanges. In addition, many extensors carry out the movements via the extensor expansion of hand which covers the phalanges.
- Medical Content
- 6 min
- Nutrient rami from palmar digital arteries
Dec 20, 2023 · The primary muscle that drives PIPJ flexion is flexor digitorum superficialis. The secondary driver of PIPJ flexion is flexor digitorum profundus (it primarily flexes the distal interphalangeal joint).
Oct 24, 2023 · The extensor pollicis brevis and extensor pollicis longus muscles are responsible for thumb extension at the 1st MCP joint. The extensor digitorum communis creates tension over the sagittal bands and pulls them over the proximal phalanx to hyperextend the MCP joints.
- Lauren Okafor, Margaret A. Sinkler, Matthew Varacallo
- 2023/10/24
- 2019
This article discusses the key anatomical structures of the hand that enable functional movements, including the bony structures, articulations, ligaments, muscles, nerves and the vascular supply. +. This is a course page funded by Plus online learning.
Apr 14, 2015 · The knobby ends of the phalanges help form knuckle joints. Injuries to the phalanges include closed bone fracture, open bone fracture, muscle strain, and luxation.
Oct 15, 2018 · Each phalanx has a body (shaft), proximal part (base) and a distal part (head). The Body of proximal and intermediate phalanges is convex on dorsal and flat on palmar side, and it tapers from above downward. Sides of the body are rough which gives attachment to the fibrous sheets of the flexor tendons. Labelled Diagram of Phalanges of the Hand
