Carbon Fiber Implants

Not Applicable

Terminated

• Conditions: Tibial Shaft Fractures
• Interventions: Device: Titanium Implant; Device: Carbon Fiber Implant

• Registration Number: NCT03382041
• Lead Sponsor: University of Alabama at Birmingham

Brief Summary

The investigators will compare intramedullary nailing of open and closed tibia shaft fractures with carbon fiber implant versus titanium implant in a Level I trauma setting.

Detailed Description

The tibia (long bone in the leg) bears most of the body weight and is the most commonly fractured long bone in the body. According to the National Center for Health Statistics; tibia, fibula and ankle fractures account for an annual sum of 581,000 fractures. Of all long bone fractures, the tibia is the most common site for non -union(failure to heal).

For many years, the standard practice in the treatment of fractures of the tibia shaft and other long bones has been intramedullary nailing (placing rod in the bone)using titanium or stainless steel implants( tibial nails).

More recently however, orthopaedic surgeons have found an alternative to the standard carbon fiber implants (tibial nails), especially in the prophylactic reinforcement of bones susceptible to pathological fractures following metastatic tumors. The new carbon fiber has also been used in the treatment of tibial non-union (non- healing bone); which has shown satisfactory outcomes. A clear advantage over titanium implants (tibial nails) is the carbon fiber's radiolucent (ability to see through the implant on x-ray) property. This allows for improved visualization of early healing and the reduction of fracture segments (i.e. fracture alignment) without the typical radiopaque (inability to see through the implant on x-ray) density and artifact found with metals on x-ray, MRI or CT Scans. The early visualization of callus formation8(healing) may therefore serve as a good prognostic predictor of successful union.

Thus orthopaedic trauma patients, especially in cases of polytrauma may heal faster; attain earlier weight bearing status, and independence, decrease rehabilitation center stays and advance recovery with possible quicker return to work. These benefits have economic significance in reducing direct costs to patients and their families as well as to the healthcare system. Use of carbon fiber implants (tibial nails) seems to hold the promise of a shorter recovery time with better functional outcome than with more rigid titanium implants (tibial nails). This is due to the carbon fiber implants(tibial nails) elasticity (flexibility) which is close to that of bone, preventing excessive rigidity and possible non- union (non -healing bone).

Intramedullary nails have continued to evolve, beginning with stainless steel implants and progressing to titanium. The titanium nail has been used over several years and the carbon fiber is a newer material and is now used by several institutions for treatment of tibial shaft fractures. There are no studies that directly compare the two nails in a prospective manner.

The standard of care for treatment of tibial shaft fractures is the use of an intramedullary (rod inside the bone) implant. Both implants perform the same function but are made of different materials. Current treatment of tibia fractures at The University of Alabama at Birmingham (UAB) utilizes both titanium and carbon fiber implants.

Study Timeline

• Study Start: 2017-05-23
• Study First Submitted: 2017-11-13
• Study First Submitted QC: 2017-12-18
• Study First Posted: 2017-12-22
• Primary Completion: 2020-03-31
• Study Completion: 2021-03-31
• Results First Submitted: 2021-10-11
• Results First Submitted QC: 2022-02-04
• Results First Posted: 2022-03-02
• Status Verified: 2023-07
• Last Update Submitted: 2023-07-10
• Last Update Posted: 2023-07-25

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

• i. Skeletal maturity (patients included will be 18 - 64 years, i.e. whose epiphyseal/growth plates are closed) ii. Arbeitsgemeinschaft ur Osteosynthesefragen/Orthpaedica Trauma Association (AO/OTA) Fracture class 42; open and closed tibia shaft fracture (Gustilo-Anderson Types I II, and III; Tscherne closed types 0, I, 2 and 3), Tscherne open types I and II.

iii. Fractures amenable to intramedullary nailing (placing a rod within the bone) iv. Fracture gaps less than 2 cm due to bone loss v. In cases of bilateral tibial fractures the investigators would include both if they meet inclusion criteria..

vi. Patient's informed consent or that of a legally acceptable representative

Read More

Exclusion Criteria

i. Subjects currently enrolled in one or more clinical studies ii. Skeletal immaturity (i.e. 17 years and younger) iii. Fractures planned for non-operative management iv. Complex intra-articular involvement of tibia plateau or distal tibia v. Pathologic fractures (fractures secondary to disease) vi. Concomitant ipsilateral tibia shaft fractures with complex pilon and/or plateau fractures requiring fixation vii. Patients already treated or in re-treatment viii. Tibia already infected as diagnosed by the attending physician ix. Patients likely to be lost before completing adequate follow-up, such as prisoners or planned out-of-state (and other likely problems in the investigator's judgment, with maintaining follow-up visit schedule) x. Patient is intellectually challenged or has a severe psychiatric condition xi. Patient is incompetent in the English Language xii. Patient is non-ambulatory before injury or as a consequence of polytrauma xiii. Inability to obtain patient's informed consent and/or that of a legally acceptable representative

Read More

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Titanium Implant	Titanium Implant	The standard of practice in the treatment of fractures of the tibial shaft and other long bones has been the intramedullary nailing using titanium or stainless steel implants.
Carbon Fiber Implant	Carbon Fiber Implant	There is an alternative to the standard treatment, which is carbon fiber implants (tibial nails), especially in the prophylactic reinforcement of bones susceptible to pathological fractures following metastatic tumors. The new carbon fiber has also been used in the treatment of tibial non-union (non- healing bone); which has shown satisfactory outcomes.

Primary Outcome Measures

Name	Time	Method
The Number of Participants Identified With Fracture Healing	From baseline through 3 months.	Will assess radiographically the fracture healing for patients treated with Carbon Fiber and Titanium Implants.

Secondary Outcome Measures

Name	Time	Method
Veterans Rand Health Survey (VR-12)	12 months.	The Veterans Rand 12 Item Health Survey is a multipurpose, self-administered generic measure health status. It was developed to measure health-related quality of life, estimate disease burden and compare disease-specific benchmarks across populations. The VR-12 items measure eight health domains: general health perceptions, physical functioning and role limitations due to physical and emotional problems, bodily pain, energy-fatigue, social functioning and mental health. Assesses how much physical health has changed over a period of time. The VR instruments use a nine-point ordinal response choices for four items in the VR-12. These answers then contribute to the scales for role limitations due to physical and emotional problems and the physical and mental summary scores. The score is based on the US average, which is 50. The score is a T-score which has a mean and standard deviation (mean of 50 has standard deviation of 10). The higher the score the healthier the individual.
Short Musculoskeletal Function Assessment Questionnaire (SMFA).	12 months.	Patient reported levels of function and satisfaction with the fixation method and overall treatment. The Short Form Musculoskeletal Assessment (SMFA) will be administered to patients at 12 months following injury. The scores of dysfunction are calculated by summing up the responses to the items and then transforming the scores according to the formula. This transformation formula gives the final scores which ranged from 0-100. The higher scores indicate poorer function.
Short Musculoskeletal Function Assessment Questionnaire (SMFA) Score.	18 months.	Patient reported levels of function and satisfaction with the fixation method and overall treatment. The Short Form Musculoskeletal Assessment (SMFA) will be administered to patients at 18 months following injury. The scores of the dysfunction and bother indices are calculated by summing up the responses to the items and then transforming the scores according to the formula. This transformation formula gives the final scores which ranged from 0-100. The higher scores indicate poorer function.
Brief Pain Inventory (BPI)	12 months.	The BPI is a widely used, 15-item measure of pain intensity and interference with daily life. The questionnaire assesses three key pain domains: pain intensity, pain interference, and efficacy of pain treatments or medications. The BPI rapidly assesses the functional severity of pain and its impact on function. The BPI rapidly assesses the functional severity of pain and its impact on function. The scale range is 0 to 10. A lower score means pain does not interfere with normal activities of daily living.
Veterans Rand Health Survey (VR-12) (Optional)	18 months.	The Veterans Rand 12 Item Health Survey is a multipurpose, self-administered generic measure health status. It was developed to measure health-related quality of life, estimate disease burden and compare disease-specific benchmarks across populations. The VR-12 items measure eight health domains: general health perceptions, physical functioning and role limitations due to physical and emotional problems, bodily pain, energy-fatigue, social functioning and mental health. The instrument produces a physical health and mental health. Assesses how much physical health has changed over a period of time. The VR instruments use a nine-point ordinal response choices for four items in the VR-12. These answers then contribute to the scales for role limitations due to physical and emotional problems and the physical and mental summary scores.
Treatment Cost	Baseline to 18 months.	Compare 2 year treatment cost per patient, associated with fixation of tibial shaft fractures using novel carbon fiber implants in comparison with titanium implants. A Carbon Fiber Implant had a cost of $2,848.35 per device, as the number value below in the Outcome Measure Data Table. We were unable to obtain the cost of the Titanium Nail.

Trial Locations

Locations (1)

The University of Alabama at Birmingham (UAB); 🇺🇸 Birmingham, Alabama, United States