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Related Concept Videos

Bones of the Upper Limb: Ulna01:15

Bones of the Upper Limb: Ulna

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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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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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Related Experiment Video

Updated: Mar 17, 2026

Novel Triple-Loop Technique for Suturing TFCC Injuries without Transosseous Tunnel
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How to Manage Skier's Thumb.

L T Wadsworth, R Johnson

    The Physician and Sportsmedicine
    |July 21, 2016
    PubMed
    Summary

    Skiers commonly injure their ulnar collateral ligament of the thumb. Early referral and careful follow-up are crucial for preventing long-term complications from this injury.

    Area of Science:

    • Orthopedics
    • Sports Medicine
    • Traumatology

    Background:

    • Ulnar collateral ligament (UCL) injuries of the thumb are frequent in skiers.
    • These injuries can lead to significant long-term complications if not managed properly.

    Purpose of the Study:

    • To outline the diagnosis and management of UCL thumb injuries in skiers.
    • To emphasize the importance of early detection and appropriate referral for optimal outcomes.

    Main Methods:

    • Review of common diagnostic procedures including X-rays and stress examinations.
    • Discussion of treatment protocols for both incomplete sprains and complete ruptures.

    Main Results:

    • X-rays are essential for identifying fractures and assessing injury extent.

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  • Stress examination aids in determining ligament stability and guiding treatment decisions.

    • Conclusions:

    • Most incomplete thumb UCL sprains can be successfully treated non-operatively with immobilization and therapy.
    • Complete ruptures or unstable injuries necessitate prompt orthopedic referral for surgical evaluation and management.