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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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Updated: Apr 7, 2026

Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects
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Distal Ulna Temporary Epiphysiodesis With a Surgeon-Made Staple.

Felicity G Fishman1,2, Daniel Walsh1, Ann E Van Heest3

  • 1Department of Orthopaedic Surgery and Rehabilitation, Loyola Stritch School of Medicine, 2160 S 1st Avenue, Maywood, IL, 60153.

Journal of Hand Surgery Global Online
|April 6, 2026
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Summary
This summary is machine-generated.

Premature growth arrest in the distal radius can cause ulnar positive variance. A novel surgeon-made staple technique for temporary distal ulnar epiphysiodesis offers a solution for pediatric limb length discrepancies.

Keywords:
Guided growthPhyseal arrestTemporary epiphysiodesisUlnar positive variance

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Area of Science:

  • Orthopedic surgery
  • Pediatric orthopedics
  • Limb deformity correction

Background:

  • Premature distal radius growth arrest can result in ulnar positive variance, potentially causing ulnar abutment syndrome or distal radioulnar joint instability.
  • Significant length discrepancies (>2.5 mm) between the distal radius and ulna necessitate treatment, especially in pediatric patients.
  • Current treatments like permanent epiphysiodesis or ulnar shortening osteotomy may not be ideal due to age and growth potential considerations.

Purpose of the Study:

  • To describe a novel surgical technique for temporary distal ulnar epiphysiodesis.
  • To address the limitations of existing hardware for guided growth in the upper extremity.

Main Methods:

  • Development and application of a surgeon-made staple for temporary distal ulnar epiphysiodesis.
  • Adaptation of guided growth principles, typically used in lower extremities, for upper extremity limb length discrepancies.

Main Results:

  • The described technique provides a method for temporary epiphysiodesis in the distal ulna.
  • This approach offers a potential solution for managing limb length discrepancies in pediatric patients where standard hardware is unsuitable.

Conclusions:

  • Temporary distal ulnar epiphysiodesis using a surgeon-made staple is a viable technique.
  • This method provides an alternative for managing premature distal radius growth arrest and associated ulnar positive variance in children.