Low Dose CT Distal Radius Fractures

Study Overview
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Brief Summary
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This study is a prospective, departmental funded study examining the outcomes of Low Dose CT scans compared to Conventional Dose CT scans in patients who present to Duke University with a Distal Radius Fracture.

Detailed Description
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The purpose of this study is to compare the use of a conventional dose computed tomography scan (C-CT) to a low dose computed tomography scan (L-CT) in the assessment of articular displacement, and development of a treatment plan for intraarticular distal radius fractures in an effort to reduce the radiation exposure to future patients with this injury pattern. Reviewers will be tasked with reporting data aimed at investigating 3 primary outcome measures: 1) Are L-CT images of sufficient quality to be used for diagnostic purposes, 2) Can accurate measurements of step and gap displacement be made on L-CT images, 3) Do proposed treatment plans change with the use of L-CT relative to those chosen based on C-CT images We hypothesize that reviewers will find L-CT images of sufficient image quality for diagnostic purposes, measurements of step and gap displacement will not be significantly different between L-CT and C-CT, and no significant differences in treatment options will be chosen based on the use of L-CT rather than C-CT for the same fracture. The secondary aim will be to evaluate the interobserver and intraobserver reliability of L-CT in evaluating intraarticular fractures of the distal radius.

Official Title
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Comparison of Low Dose Computed Tomography to Conventional Dose Computed Tomography in the Evaluation of Distal Radius Fractures

Conditions
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Radius Fractures

Intervention / Treatment
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* Radiation: Low Dose CT Scan of the Wrist


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Subjects must be age 18 years or older. Subject must have sustained an intraarticular distal radius fracture which undergo closed reduction and application of a below-elbow splint. Subjects whos injury occurred less than 2 weeks prior to the time of enrollment. Exclusion Criteria: Subject is under the age of 18 years. Subject is unable to speak English for completion of consent process. Subject sustained pathologic fracture. Subject sustained open fracture. Subject is a pregnant woman.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Distal Radius Fracture Patients<br>Adult patients who have sustained a Distal Radius Fracture. | Radiation: Low Dose CT Scan of the Wrist<br>* A low dose CT scan will be obtained in patients with a distal radius fracture of the wrist.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Low Dose CT Images of Sufficient Diagnostic Quality | Low Dose CT Images will be compared to a standard dose to assess image quality. | 12 months. | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Step Displacement | Representative CT images will be used to measure the step displacement of each fracture. | 12 months | 
| Gap Displacement | Representative CT images will be used to measure the gap displacement of each fracture. | 12 months |