Monoaxial vs. Polyaxial Percutaneous Hybrid Stabilization
44 participantsStarted 2026-05-01
Plain-language summary
Vertebral body fractures in older adults mostly affect the thoracolumbar junction and are challenging to treat due to osteoporosis and other comorbidities. Treatment options range from conservative approaches to minimally invasive procedures like vertebroplasty or balloon kyphoplasty, as well as surgical techniques such as posterior or combined stabilization. A common method for more severe fractures (from OF3 onwards) is percutaneous bisegmental hybrid stabilization using cement-augmented pedicle screws and balloon kyphoplasty. Polyaxial screws are easier to implant but offer less biomechanical stability. In contrast, monoaxial screws provide greater stiffness, allowing better correction of kyphosis and restoration of vertebral body height. The study compares radiological and clinical outcomes in patients aged 60 and older with thoracolumbar fractures (T11-L4) between monoaxial and polyaxial hybrid stabilization. The primary goal is to evaluate and compare the degree of kyphosis correction six months after surgery.
Who can participate
Age range
60 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Age ≥ 60 years (male and female patients)
. Ability to understand nature, risks, and benefits of study participation and to provide written informed consent.
. Psychosocially, mentally, and physically capable of complying with all study requirements, including scheduled follow-up visits, completion of forms, and participation in all procedures as defined by the protocol.
. Ambulatory prior to fracture, with or without the use of assistive devices
. Acute vertebral fractures located between T11 and L4 (inclusive)
. Fractures deemed suitable for bisegmental hybrid stabilization based on clinical and radiological assessment - primarily OF type 3 and type 4 fractures according to DGOU classification; type 2 and 5 fractures may also be included based on individual evaluation, with the final treatment decision left to the discretion of the treating surgeon.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.