UnknownNot Applicable

A Prospective Study of Natural History and Clinical Outcomes for Basilar Invagination

China200 participantsStarted 2022-02-06

Plain-language summary

Who can participate

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

. BI discovered by the patient not incidentally;
. Patients with depression of the skull base caused by congenital skeletal developmental malformations and symptoms;
. The patient was initially treated in our center, and the interval between onset and treatment was at least 1 month or no treatment;
. The imaging diagnosis of BI meets the standard (3-5mm higher than the Chamberlain's line)

Exclusion criteria

. secondary BI caused by trauma, pathological factors such as rheumatoid arthritis, hyperparathyroidism, osteogenesis imperfecta, rickets, osteomalacia, spinal cord tumors, tuberculosis, inflammation of adjacent structures, and simple AAD, odontoid body deformity, etc.
. spinal vascular disease, intervertebral disc herniation, tethered spinal cord disease and other diseases that may cause symptoms.
. Patients with incomplete imaging data or symptomatic data.

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.

What they're measuring

improved symptoms

Timeframe: 1 months postoperatively

improved symptoms

Timeframe: 3 months postoperatively

improved symptoms

Timeframe: 6 months postoperatively

improved radiology

Timeframe: 1 months postoperatively

improved radiology

Timeframe: 3 months postoperatively

improved radiology

Timeframe: 6 months postoperatively

operation complication

Timeframe: 1 months postoperatively

operation complication

Timeframe: 3 months postoperatively

Trial details

NCT IDNCT05909540

SponsorXuanwu Hospital, Beijing

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2023-12-01

View on ClinicalTrials.gov More Basilar Invagination trials

Who can participate

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

. BI discovered by the patient not incidentally;
. Patients with depression of the skull base caused by congenital skeletal developmental malformations and symptoms;
. The patient was initially treated in our center, and the interval between onset and treatment was at least 1 month or no treatment;
. The imaging diagnosis of BI meets the standard (3-5mm higher than the Chamberlain's line)

Exclusion criteria

. secondary BI caused by trauma, pathological factors such as rheumatoid arthritis, hyperparathyroidism, osteogenesis imperfecta, rickets, osteomalacia, spinal cord tumors, tuberculosis, inflammation of adjacent structures, and simple AAD, odontoid body deformity, etc.
. spinal vascular disease, intervertebral disc herniation, tethered spinal cord disease and other diseases that may cause symptoms.
. Patients with incomplete imaging data or symptomatic data.

What they're measuring

improved symptoms

Timeframe: 1 months postoperatively

improved symptoms

Timeframe: 3 months postoperatively

improved symptoms

Timeframe: 6 months postoperatively

improved radiology

Timeframe: 1 months postoperatively

improved radiology

Timeframe: 3 months postoperatively

improved radiology

Timeframe: 6 months postoperatively

operation complication

Timeframe: 1 months postoperatively

operation complication

Timeframe: 3 months postoperatively