Related Experiment Video
Updated: Aug 5, 2026

Culturing and Measuring Fetal and Newborn Murine Long Bones
Published on: April 26, 2019
Growth and development of the distal radius and ulna
1Department of Orthopaedic Surgery, University of Washington, Seattle 98144, USA.
Insights
Wrist and forearm deformities can stem from radius and ulna growth issues. This study established normal growth patterns, aiding in early detection of discrepancies.
Area of Science:
- Orthopedics
- Pediatric Growth and Development
- Radiology
Background:
- Wrist and forearm deformities can arise from abnormal growth of the radius and ulna.
- Understanding normal growth patterns is crucial for diagnosing skeletal discrepancies.
Purpose of the Study:
- To establish normal growth patterns of the distal radial and ulnar growth plates in children.
- To provide reference data for the early detection of growth discrepancies in the wrist and forearm.
Main Methods:
- Measurements of the distance between the distal radial and ulnar growth plates were taken in 244 healthy children.
- Data were collected from a cohort of middle-class American children, primarily of Northwest European descent.
Main Results:
- After age 5, the distance between the distal radial and ulnar growth plates progressively decreased.
- This distance reached a mean of zero by age 13 in girls and age 15 in boys.
Conclusions:
- Established measurements define normal wrist appearance during growth.
- These findings facilitate the early identification of radius and ulna growth discrepancies.
Abstract:
Deformities of the wrist and forearm may result from growth disturbance of the radius and ulna. Normal growth patterns were established by measuring the distance between the distal radial and ulnar growth plates in 244 children. The subjects were healthy, well-nourished, middle-class Americans, mostly of Northwest European descent. After the age of 5 years, the distance between the distal radial and distal ulnar growth plates progressively decreased from a mean of 6 mm to a mean of zero by age 13 in girls and age 15 in boys. These measurements are helpful in determining the normal appearance of the wrist during growth and in the early detection of growth discrepancy.
More Related Videos
10:36Vascularized Composite Hand Allograft Procurement and Preparation for Distal and Proximal Forearm Allotransplantation: A Stepwise Approach
Published on: May 23, 2025
11:21Development of a Novel Internal Fixation Model for Rat Radial Fractures: Fracture Healing Assessment and Dorsal Root Ganglion Isolation
Published on: March 13, 2026
Related Concept Videos
Bones of the Upper Limb: Humerus
Bones of the Upper Limb: Ulna
Bones of the Upper Limb: Radius
The radius has a nail-shaped head, and a short...
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Bone Formation by Endochondral Ossification
Arteries of the Upper Limbs