Digital Three-dimensional Imaging Models for Repair of Complex Long Bone Fractures

Digital Three-dimensional Imaging Models for Repair of Complex Long Bone Fractures: a Randomized Controlled Trial With 6-month Follow-up

To verify whether digital three-dimensional model-assisted internal fixation can obtain better effects in the repair of complex long bone fractures compared with conventional internal fixation.

Study Overview

• Status: Completed
• Conditions: Bone Fracture
• Intervention / Treatment: Device: CT scan for internal fixation; Procedure: conventional internal fixation

Detailed Description

History and current related studies The internal fixator is difficult to completely fit the bone surface at the site of complex long bone fracture, which reduces the firmness of fixation. From a safety point of view, the establishment of a digital three-dimensional measurement model is undoubtedly a very reliable and intuitive way. Digital three-dimensional models are established after CT scan, and these models can greatly reflect the site and degree of fractures, and reduce anatomical parameters, with high degree of simulation and feasibility.

Adverse events

1. The investigators will record adverse events, including screw loosening and falling off, steel plate fracture and bending, joint stiffness, delayed healing or non-healing, peripheral nerve injury and infection.
2. If severe adverse events occur, investigators will report details, including the date of occurrence and measures taken to treat the adverse events, to the principle investigator and the institutional review board within 24 hours.

Data collection, management, analysis and open-access

1. Data collection: Case report forms with demographic data, disease diagnosis, accompanying diseases, drug allergy history, and adverse events will be collected, processed using Epidata software (Epidata Association, Odense, Denmark), collated, and then recorded electronically by data managers using a double-data entry strategy.
2. Data management: The locked electronic database will be accessible and locked only by the project manager, and will not be altered. All data regarding this trial will be preserved by the Affiliated Hospital of Qinghai University, China.
3. Data analysis: The electronic database will be statistically analyzed by a professional statistician who will create an outcome analysis report that will be submitted to the lead researchers. An independent data monitoring committee will supervise and manage the trial data, ensuring a scientific and stringent trial to yield accurate and complete data.
4. Data open access: Anonymized trial data will be published at www.figshare.com.

Statistical analysis

1. Statistical analysis will be performed using SPSS 19.0 software, and will follow the intention-to-treat principle. Normally distributed measurement data will be expressed as mean ± standard deviation, and minimums and maximums. Non-normally distributed measurement data will be expressed as lower quartile (q1), and median and upper quartile (q3).
2. Fisher's exact test will be performed for comparison of total efficacy and the incidence of adverse reactions preoperatively and 6 months postoperatively. Mann Whitney U test will be used to compare Harris score, Visual Analogue Scale, operation time and hospital stay between the two groups. The significance level will be α = 0.05.

• Study Type: Interventional
• Enrollment (Actual): 63
• Phase: Not Applicable

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult; Older Adult
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Long bone fractures in the four limbs, such as middle segment of humerus, femur, ulna, radius, tibia and fibula; fractures are not related to the articular surface
• Diagnosed with complex long bone fractures via X-ray
• Admission within 6 hours after injury

Exclusion Criteria:

• Pathological fractures with vascular and nerve injuries
• Split fractures of the humeral head
• Neer IV fractures
• Humeral head compression area greater than 40%
• Glenohumeral dislocation
• Conscious disturbance, cerebral infarction, tumor, serious medical complications, such as heart, lung, kidney failure, severe hypertension, diabetes and blood diseases
• History of elbow joint dysfunction or shoulder joint disease
• Unwilling to sign the informed consent

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: the observation group; 32 patients with complex long bone fractures will be randomized to undergo digital three-dimensional models will be established by CT scan for internal fixation in the observation group.	Device: CT scan for internal fixation; In the observation group, digital three-dimensional models will be established by CT scan for internal fixation.
Experimental: the control group; 31 patients will be randomized to undergo conventional internal fixation in the control group.	Procedure: conventional internal fixation; In the control group, patients will undergo conventional internal fixation.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
X-ray examination	To evaluate total efficacy at postoperative 6 months	postoperative 6 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Harris scores	To assesse the recovery of hip function	preoperatively and 6 months postoperatively
Visual Analogue Scale	To evaluate the pain, and the high score represents severe pain.	preoperatively and 6 months postoperatively

Collaborators and Investigators

• Sponsor: Qinghai University
• Investigators: Principal Investigator: Zichun Zhao, Master, Affiliated Hospital of Qinghai University

Study record dates

Study Major Dates

• Study Start: December 1, 2014
• Primary Completion (Actual): April 1, 2016
• Study Completion (Actual): December 1, 2016

Study Registration Dates

• First Submitted: November 12, 2016
• First Submitted That Met QC Criteria: November 12, 2016
• First Posted (Estimate): November 16, 2016

Study Record Updates

• Last Update Posted (Actual): February 9, 2018
• Last Update Submitted That Met QC Criteria: February 7, 2018
• Last Verified: February 1, 2018

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Wounds and Injuries; Fractures, Bone
• Other Study ID Numbers: QinghaiUH_006

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Undecided