Local Remodelling of Bone Fracture Healing

Status Completed

Clinical Trial Summary

The aim of our study is to improve a mathematical model (FAE) of human bone healing using the example of the distal spoke fracture. Computer-aided strength analyzes of data from hr-pqCTs should provide information about the fracture strength and quality of the newly formed bone at defined times. Laboratory parameters from sober blood analyzes, bone remodeling markers, competitive x-rays, the course of pain, range of motion, grip strength and other easily accessible parameters should be evaluated with the above-mentioned analyzes.

Clinical Trial Description

So far, empirical values have mainly been used to assess fracture healing. The clinical parameter used is freedom from pain over the fracture, and native radiology the callus formation. In the case of anatomically reduced fractures, however, this can hardly be observed. In the case of a distal radius fracture, it is assumed that the total time to complete healing and resilience is one year. However, this has not been proven biomechanically. The high-resolution peripheral quantitative computed tomography offers the possibility of precisely describing the healing process in the high-resolution range using the trabecular structure, bone density, bone volume and tissue composition. The finite element analysis can then be used to calculate the load-bearing capacity of the bone and to create failure models. The distal radius fracture is one of the most common fractures in humans, especially in osteoporosis. Due to its frequency and easily accessible fracture localization, it is an ideal model for investigating fracture healing. The additional examination of blood and urine for bone loss markers can provide further information on the healing process in conjunction with the image data. It is a prospective cohort study. The collected data are compared on the one hand with preliminary examinations of the injured side in the sense of creating a model and on the other hand with the healthy, non-fractured side in order to compare the strength of the fracture. Performing the X-ray and HR-pQCTs leads to radiation exposure which, however, can be classified as low. (X-ray: 0.02 mSv / image; HR-pQCT: between 0.003 - 0.006 mSv / stack image). The DXA examination on the distal radius, femur / hip + lumbar spine requires 0.405 mSv. With 18 x-rays and 24 HR-pQCTs and 1 DXA per patient, there is a radiation exposure of 0.837 - 0.909 mSv over the course of the academic year. Blood will also be taken and urine samples will be collected. Together with the clinical examination and filling in the questionnaire, each examination should take approx. 45 minutes. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT04783337
Study type	Interventional
Source	Medical University Innsbruck
Contact
Status	Completed
Phase	N/A
Start date	December 10, 2015
Completion date	December 19, 2019

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