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Related Concept Videos

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

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The muscles of the forearm that move the wrist, hand, and digits are numerous and diverse. They can be classified into two groups based on their location and function — the anterior and posterior compartment muscles.
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The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi...
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Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
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In a cardiovascular examination, inspection and palpation are crucial for identifying abnormalities.
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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.
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The Contractile Ring02:15

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Contractile rings are composed of microfilaments and are responsible for separating the daughter cells during cytokinesis. Contractile ring assembly proceeds along with other cell cycle events; however, very few mechanistic details are known about the timing and coordination of the contractile rings with the cell cycle.
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Related Experiment Video

Updated: Mar 27, 2026

Author Spotlight: Ultrasound-Guided Needle Release Combined with Corticosteroid Injection for the Treatment of Supinator Syndrome
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Author Spotlight: Ultrasound-Guided Needle Release Combined with Corticosteroid Injection for the Treatment of Supinator Syndrome

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[A man with a swollen ring finger].

Famke C J Falkenberg1, Luc F E Mercelina

  • 1Maastricht University, afd. Skillslab, Maastricht.

Nederlands Tijdschrift Voor Geneeskunde
|January 7, 2016
PubMed
Summary
This summary is machine-generated.

A man developed a new joint in his left ring finger years after a previous proximal interphalangeal joint dislocation. This case highlights the potential for unexpected bone formation following finger injuries.

Related Experiment Videos

Last Updated: Mar 27, 2026

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Area of Science:

  • Orthopedic Surgery
  • Hand Surgery
  • Radiology

Background:

  • A 30-year-old male presented with a laceration to his left forefinger.
  • A pre-existing swelling of the left ring finger was incidentally noted during examination.

Observation:

  • The patient had a history of volar dislocation of the proximal interphalangeal joint in the left ring finger sustained two years prior.
  • Radiographic imaging was performed as part of the evaluation.

Findings:

  • Radiography revealed the unexpected formation of a new joint in the left ring finger.
  • This new joint formation occurred at the site of the previous proximal interphalangeal joint injury.

Implications:

  • This case demonstrates a rare sequela of proximal interphalangeal joint dislocation, suggesting potential for novel joint development.
  • Understanding such post-traumatic bone remodeling is crucial for accurate diagnosis and treatment planning in hand surgery.
  • Further research may explore the mechanisms underlying post-traumatic joint neogenesis.