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Functional Characterization of Endogenously Expressed Human RYR1 Variants
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Published on: June 9, 2021

Hirayama disease.

Muh-Shi Lin1, Woon-Man Kung, Wen-Ta Chiu

  • 1Department of Neurosurgery, Taipei Medical University-Wan Fang Hospital, Taipei, Taiwan.

Journal of Neurosurgery. Spine
|June 3, 2010
PubMed
Summary
This summary is machine-generated.

Surgical treatment for Hirayama disease, a rare cervical flexion myelopathy, showed improved motor function in most patients. Anterior decompressive surgery may be preferred for specific dynamic MRI findings.

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Area of Science:

  • Neurology
  • Neurosurgery
  • Radiology

Background:

  • Hirayama disease, a rare cervical flexion myelopathy, presents diagnostic challenges.
  • Controversy exists regarding optimal surgical candidates and prognosis.

Purpose of the Study:

  • To evaluate the outcomes of surgical treatment for patients diagnosed with Hirayama disease.
  • To investigate the effectiveness of different surgical approaches.

Main Methods:

  • Retrospective study of 6 young patients with Hirayama disease.
  • Diagnosis confirmed by clinical, neurophysiological, and dynamic MRI findings.
  • Surgical decompression (anterior/posterior) or conservative treatment was administered.

Main Results:

  • Motor function improved in 3/5 surgically treated patients; sensory function improved in 2.
  • No improvement in neurological symptoms for the conservatively treated patient.
  • Anterior effacement during flexion noted post-posterior surgery in one case.

Conclusions:

  • Hirayama disease is rare and prone to misdiagnosis.
  • Dynamic MRI is crucial for diagnosis, revealing tight dural canal or posterior wall migration.
  • Anterior decompression may be superior for patients with anterior effacement and cervical kyphosis on flexion MRI.