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Fractures: Bone Repair

Fractures: Bone Repair

Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...

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Related Experiment Video

Updated: Mar 3, 2026

Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner

Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner

Published on: June 6, 2025

Quantifying Proximal Tibial Physeal Injury in Rigid Intramedullary Nailing in Adolescent Patients.

Stephanie T Kha¹, Michael Johnston², Justin R Ryan^3,4

¹Division of Orthopedics, Rady Children's Hospital.

Journal of Pediatric Orthopedics

|March 2, 2026

Summary

Rigid intramedullary nailing (RIMN) in pediatric tibia fractures causes less than 7% physeal injury, below the threshold for growth concerns. This computer simulation study offers insights for surgical decisions regarding growth plate violation.

Keywords:

3D modeling proximal tibial physis rigid intramedullary tibial nailing skeletally immature

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Last Updated: Mar 3, 2026

Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner

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Published on: June 6, 2025

An Intramedullary Locking Nail for Standardized Fixation of Femur Osteotomies to Analyze Normal and Defective Bone Healing in Mice

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Published on: November 13, 2016

The Tibial Fracture-Pin Model: A Clinically Relevant Mouse Model of Orthopedic Injury

The Tibial Fracture-Pin Model: A Clinically Relevant Mouse Model of Orthopedic Injury

Published on: July 28, 2022

Area of Science:

Orthopedic Surgery
Pediatric Orthopedics
Biomechanical Engineering

Background:

Rigid intramedullary nailing (RIMN) is a common treatment for tibia fractures in skeletally immature patients.
The extent of proximal tibial physeal (growth plate) injury and its impact on growth following RIMN is not well understood.

Purpose of the Study:

To quantify the volume of proximal tibial physeal injury during RIMN in skeletally immature patients using computer simulation.

Main Methods:

Three-dimensional (3D) models were created from pediatric knee CT scans.
Virtual reaming with different implant sizes (9.75-12.0 mm) was simulated.
Physeal injury volume was calculated as a percentage of total physis volume.

Main Results:

Larger reamer diameters resulted in increased physeal injury volume.
The maximum simulated physeal injury was 5.15%, which is below the 7% threshold.
A 10-degree sagittal trajectory variation increased injury volume in one group.

Conclusions:

Computer simulations can accurately measure physeal injury during RIMN.
The volume of physeal injury in this study remained below concerning levels.
Findings support informed surgical decisions for pediatric tibia fractures treated with RIMN.