Fixation of Unstable Distal Radius Fractures
|Distal Radius Fractures||Device: Intramedullary Radius Fixation (Micronail) Procedure: Volar Plate Fixation|
|Study Design:||Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||The Fixation of Unstable Metaphyseal Distal Radius Fractures: A Randomized, Controlled Trial|
- Michigan Hand Outcomes Questionnaire [ Time Frame: one week post-surgery compared to six weeks post-surgery ]
- Disabilities of the Arm, Shoulder, and Hand Questionnaire [ Time Frame: one week post-surgery compared with six weeks post-surgery ]
|Study Start Date:||May 2008|
|Study Completion Date:||September 2013|
|Primary Completion Date:||September 2013 (Final data collection date for primary outcome measure)|
Active Comparator: 1
Intramedullary Radius Fixation (Micronail) - Group 1
A new device was developed to provide intramedullary distal radius fracture fixation. This new device allows the placement of the orthopaedic hardware inside the medullary canal of the radius.
Device: Intramedullary Radius Fixation (Micronail)
After adequate anesthesia was obtained and the patient was prepared for surgery, distraction was applied to the fracture site and preliminary reduction of the distal radius fracture was performed under fluoroscopic guidance. A pin was inserted to maintain the fracture reduction, then the Micronail was inserted inside the radius. The metaphyseal defect created by the fracture was filled using allograft or autograft bone material. Limited incisions at either the radial or ulnar columns was performed to achieve acceptable reduction of the fracture. Radiographic parameters were used to evaluate the results of the surgical management with intramedullary nailing.
Active Comparator: 2
Volar Plate Fixation - Group 2
Volar locking plates provide rigid external fixation and are placed on the outside of the radius. Volar plates are placed directly on the distal radius using a metal plate contoured to the shape of the distal radius.
Procedure: Volar Plate Fixation
After adequate anesthesia, longitudinal traction of the wrist was applied. Based on the fracture pattern, fragments were reduced and stabilized using either one 2.4mm titanium pre-contoured locking plate or a combination of locking plates. Arthrotomy was performed to verify that the fracture fragments were reduced. Plates were contoured to fit boney contours as needed. Allograft or autograft was placed in the fracture repair site as necessary. Radiographic landmarks were evaluated. Care was taken to ensure that plates were covered with periosteum or retinaculum to reduce the incidence of possible soft tissue irritation caused by the plate on the bone. The skin incision was closed; a removable splint applied.
INTRODUCTION: Fractures of the distal radius are the most common upper extremity fractures, accounting for approximately 250,000 to 300,000 injuries in the United States annually. The goals of treatment for patients with distal radius fractures are restoration of wrist anatomy, return of normal pain-free hand and wrist range of motion, and early return to normal activities of daily living. Management of distal radius fractures is dictated by the fracture pattern, the degree of displacement of the bone fragments, whether or not the fracture involves the joint, the presence of other bodily injuries, and the patient's pre-injury activity level and physical demands.
Unstable distal radius fractures require surgical fixation of the broken bone because closed reduction (nonsurgical manipulation of the fractured bones and casting) often is not sufficient to maintain fracture reduction and promote bone healing. Operative management of distal radius fractures has been studied extensively and has evolved over the past decade.
STUDY HYPOTHESIS: There are no published prospective, randomized trials comparing open reduction using volar plating to intramedullary fixation for the management of displaced unstable, metaphyseal distal radius fractures. The study hypothesis is that the outcomes of treatment of distal radius fractures using an intramedullary radius fixation system (Micronail®) will result in the earlier return of wrist range of motion, earlier functional recovery, and improvements in health-related quality of life equal to or superior to the outcomes of volar plate fixation.
SPECIFIC AIMS: The specific aim of this randomized, controlled clinical trial is to compare an intramedullary radius fixation system (Micronail®) to a volar locking plate technique for the management of displaced, unstable, metaphyseal distal radius fractures. Both functional and health-related quality of life outcomes of the study participants will be documented during the trial. In addition, radiographic information will be collected to compare the radiographic evidence of fracture healing in the two treatment groups.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00654615
|United States, North Carolina|
|Wake Forest University Health Sciences - CompRehab|
|Winston-Salem, North Carolina, United States, 27157|
|Principal Investigator:||Zhongyu Li, MD, PhD||Assistant Professor|