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Muscles of the Forearm that Move the Hand and Fingers01:16

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The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
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Bones of the Upper Limb: Radius01:09

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The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
The radius has a nail-shaped head, and a...
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The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side...
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The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
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The muscles that move the forearms can be divided into four groups: forearm flexors, forearm extensors, forearm pronators, and forearm supinators. The flexors and extensors act on the elbow joint, while the pronators and supinators act on the radioulnar joints.
Forearm Flexors
The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...
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Finger Proximal Interphalangeal Joint Dislocation.

Denise Ramponi1, Mary Jo Cerepani

  • 1School of Nursing & Health Sciences, Robert Morris University, Moon Township, Pittsburgh, Pennsylvania (Dr Ramponi); Heritage Valley Health System, Sewickley, Pennsylvania (Dr Ramponi); Emergency Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania (Dr Cerepani).

Advanced Emergency Nursing Journal
|October 29, 2015
PubMed
Summary
This summary is machine-generated.

Prompt reduction and proper evaluation are key for managing finger dislocations, especially proximal interphalangeal joint injuries. Early orthopedic referral ensures optimal outcomes for complex or unstable finger joint dislocations.

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Area of Science:

  • Orthopedics
  • Emergency Medicine
  • Hand Surgery

Background:

  • Finger dislocations are frequent injuries encountered in emergency settings.
  • Effective management by emergency nurse practitioners requires a thorough understanding of anatomy and injury patterns.
  • Proximal interphalangeal (PIP) joint dislocations are particularly common.

Purpose of the Study:

  • To outline the essential components of evaluating and managing finger dislocations.
  • To highlight the importance of prompt reduction and appropriate diagnostic imaging.
  • To define criteria for orthopedic hand specialist referral.

Main Methods:

  • Systematic physical examination of the injured digit.
  • Standard radiographic imaging including anteroposterior, lateral, and oblique views.
  • Clinical assessment of reduction success and joint stability.

Main Results:

  • Dorsal PIP joint dislocations are the most common and typically reducible.
  • Volar PIP joint dislocations present a higher risk of reduction difficulty and potential deformity.
  • Prompt reduction is crucial for favorable outcomes.

Conclusions:

  • A comprehensive approach involving physical examination and radiography is vital for diagnosing and managing finger dislocations.
  • Timely reduction and appropriate specialist referral are critical for preventing complications and ensuring joint stability.
  • Understanding the nuances between dorsal and volar PIP dislocations guides management strategies.