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Search / Trial NCT06079125

PFDD Versus PFDRT in Chiari Decompression Surgery

Launched by XUANWU HOSPITAL, BEIJING · Oct 9, 2023

Trial Information

Current as of June 26, 2025

Recruiting

Keywords

Posterior Fossa Decompression With Duraplasty Tonsillectomy Fmdd

ClinConnect Summary

This clinical trial is looking at two different surgical approaches for treating Chiari malformation type I, a condition where brain tissue extends into the spinal canal, often causing headaches and other symptoms. Specifically, the study will compare a surgery that involves decompressing the back of the skull and covering the area (called duraplasty) with one that also includes moving the tonsils. The goal is to see which approach leads to better recovery, fewer complications, and an improved quality of life for patients.

To participate in this trial, you need to be at least 14 years old and have a Chiari malformation with certain specific features, including a 5 mm or greater displacement of the tonsils and a type of fluid-filled cyst in the spine called syringomyelia. Before the surgery, participants will need to share MRI scans of their brain and spine. This study is open to all genders and is currently recruiting participants. If you decide to join, you can expect to undergo one of the two surgical procedures and will be monitored for improvements in your symptoms and overall well-being.

Gender

ALL

Eligibility criteria

  • Inclusion Criteria:
  • Age ≥14 years old
  • Chiari malformation type I ≥5 mm tonsillar ectopia
  • a syrinx with a width \> 50% of the cross-sectional diameter of the spinal cord , and a length of at least 2 cervical and/or thoracic vertebral segments.
  • MRI of the brain and cervical and thoracic spine are required prior to surgery and must be available to be shared with the Data Coordinating Center
  • Exclusion Criteria:
  • included one or more of the following preexisting conditions: hydrocephalus; tumor; brain trauma; stroke; meningitis; abscess;
  • other congenital anomalies of the brain or skull base; vertebral anomalies (i.e., Klippel-Feil, atlas assimilation, etc.);
  • degenerative or demyelinating disease;
  • CM-I without syringomyelia;
  • syringomyelia with cerebellar tonsils in a normal position;
  • fibromyalgia;
  • chronic fatigue syndrome;
  • prior posterior fossa surgery.
  • Unable to share pre-decompression MRI of the brain and spine Patients who do not wish to participate

About Xuanwu Hospital, Beijing

Xuanwu Hospital, located in Beijing, is a leading clinical research institution renowned for its commitment to advancing medical knowledge and improving patient care. Affiliated with Capital Medical University, the hospital specializes in neurology and rehabilitation, providing a robust framework for innovative clinical trials. With a multidisciplinary team of experienced researchers and healthcare professionals, Xuanwu Hospital focuses on conducting high-quality, ethically sound studies that aim to explore new treatment modalities and enhance therapeutic outcomes. Through its dedication to research excellence and patient-centered approaches, Xuanwu Hospital plays a pivotal role in the advancement of healthcare solutions both locally and globally.

Locations

Beijing, Beijing, China

Patients applied

0 patients applied

Trial Officials

fengzeng jian

Study Chair

Xuanwu Hospital, Beijing

Timeline

First submit

Trial launched

Trial updated

Estimated completion

Not reported