Professor Jian Fengzeng: Chiari and Spinal Neurosurgery Expert in Beijing

Professor Jian Fengzeng: Chiari and Spinal Neurosurgery Expert in Beijing

Professor Jian Fengzeng: Craniovertebral Junction and Spinal Cord Specialist

Professor Jian Fengzeng is a senior neurosurgeon, professor, doctoral supervisor, deputy director of neurosurgery at Xuanwu Hospital, and director of the Capital Medical University Institute of Spine and Spinal Cord Disorders. His clinical and academic work focuses on Chiari I malformation, syringomyelia, craniovertebral-junction abnormalities, spinal-cord compression, spinal tumors, spinal injury, deformity, and complex neurological spine surgery.

Clinical and Academic Focus

  • Chiari I malformation;
  • syringomyelia;
  • craniovertebral-junction abnormalities;
  • basilar invagination and atlantoaxial instability;
  • spinal-cord tumors and vascular lesions;
  • degenerative spinal-cord compression;
  • spinal trauma and cord injury;
  • complex spinal deformity and reconstruction; and
  • second opinions before high-risk neurological spine surgery.

Chiari I Malformation

Chiari I malformation occurs when the cerebellar tonsils extend below the opening at the base of the skull. Some people have no symptoms, while others develop pressure-related headache, neck pain, imbalance, numbness, weakness, swallowing difficulty, sleep-disordered breathing, or spinal-cord cavities.

Tonsil position alone does not determine the need for surgery. Symptoms, neurological findings, cerebrospinal-fluid flow, syringomyelia, skeletal anatomy, and change over time must be considered together.

Syringomyelia

Syringomyelia is a fluid-filled cavity within the spinal cord. It can cause loss of pain and temperature sensation, hand weakness, muscle wasting, stiffness, scoliosis, pain, or bladder and bowel symptoms.

Treatment usually targets the cause of disrupted cerebrospinal-fluid flow rather than simply draining the cavity. Professor Jian’s team has published longitudinal research on the natural history of Chiari I malformation with syringomyelia.

Posterior Fossa Decompression

For selected symptomatic Chiari patients, posterior fossa decompression creates more space at the craniovertebral junction and aims to restore cerebrospinal-fluid circulation. Surgery may include bone decompression, opening of the dura, duraplasty, or other steps according to anatomy and the surgical plan.

Potential risks include cerebrospinal-fluid leak, infection, bleeding, neurological injury, instability, persistent symptoms, and need for further treatment.

Craniovertebral-Junction Abnormalities

Basilar invagination, atlas assimilation, atlantoaxial instability, and other abnormalities can compress the brainstem or upper spinal cord. Symptoms may include weakness, imbalance, numbness, swallowing difficulty, sleep apnea, and respiratory problems.

Treatment may require decompression, reduction, fixation, fusion, or a combined approach. Dynamic imaging and detailed bone and vascular anatomy are important for planning.

Spinal Cord Tumors

Spinal tumors may arise within the cord, around it, in the nerve roots, vertebrae, or nearby tissues. Treatment can involve microsurgery, stabilization, radiation, systemic therapy, or observation.

The goal is to control disease while preserving neurological function. Intraoperative monitoring, navigation, ultrasound, and reconstruction may support selected procedures.

Spinal Cord Injury

Spinal-cord injury can result from trauma, compression, ischemia, inflammation, or other disease. Acute injury requires stabilization, imaging, prevention of secondary damage, and timely decompression when indicated.

Professor Jian has led research programs involving biomaterials and intelligent systems for spinal-cord injury and spinal deformity. Many regenerative approaches remain investigational and should not be presented as established cures.

Complex Spinal Reconstruction

Severe deformity, instability, tumor, trauma, or failed previous surgery may require decompression plus fixation and reconstruction. Planning may use CT-based navigation, three-dimensional modeling, and individualized implants.

Risks and expected benefit depend on neurological status, bone quality, alignment, previous surgery, infection, and overall health.

Who May Consider a Consultation?

  • patients with symptomatic Chiari I malformation;
  • patients with syringomyelia that is enlarging or causing deficits;
  • patients with basilar invagination or atlantoaxial instability;
  • patients with a spinal-cord or craniovertebral-junction tumor;
  • patients with progressive weakness, numbness, gait, or bladder symptoms from cord compression;
  • patients needing complex spinal stabilization or revision surgery;
  • patients with spinal-cord injury seeking treatment review; or
  • patients seeking a second opinion before decompression or fusion.

Medical Records to Prepare

  • a concise symptom and treatment timeline;
  • brain and whole-spine MRI in original DICOM format;
  • thin-slice CT of the craniovertebral junction or affected spine;
  • flexion-extension X-rays or CT when instability is suspected;
  • cerebrospinal-fluid flow imaging when available;
  • all previous spinal and craniovertebral operative reports;
  • implant information and postoperative imaging;
  • neurological, bladder, bowel, swallowing, breathing, and rehabilitation assessments;
  • pathology reports for tumors; and
  • a clear list of function-preservation and recovery goals.

Planning an International Consultation

Rapidly worsening weakness, new bladder or bowel loss, breathing or swallowing difficulty, severe trauma, or acute spinal-cord compression requires immediate local emergency assessment.

Stable patients should confirm whether original imaging and previous operative records can be reviewed. Remote medical-record review requires physician authorization. Final diagnosis and surgical eligibility usually require in-person neurological and spinal assessment.

How CMCS Can Assist

CMCS – China Medical Concierge Shanghai is an independent medical concierge and health management company, not a hospital. We assist international patients with organizing and translating neurological and spinal records, identifying an appropriate specialist, requesting appointment availability, arranging interpretation, and planning medical travel in China.

Access to Professor Jian, remote review, decompression, fusion, reconstruction, or an investigational program is subject to doctor and hospital approval. CMCS does not guarantee appointments, surgical eligibility, neurological recovery, or clinical outcomes.

Important Note

Doctor titles, clinical roles, devices, procedures, and appointment arrangements may change. This profile is based on the supplied verified research document and is for general information only. It does not replace assessment by a qualified spinal neurosurgery team.

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