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Updated: May 6, 2026
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Detrusor Underactivity Model in Rats by Conus Medullaris Transection
Published on: August 28, 2020
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Overactive bladder in cervical spondylotic myelopathy
Zhuo Wang1, Toshihiko Sakakibara, Yuichi Kasai
1Department of Spinal Surgery and Medical Engineering, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan.
Summary
Overactive bladder (OAB) affects nearly half of patients with cervical spondylotic myelopathy. Post-operative improvement for these OAB symptoms is notably low, suggesting non-neurogenic causes.
Area of Science:
- Urology
- Neurosurgery
- Orthopedics
Background:
- Overactive bladder (OAB) is a condition defined by the International Continence Society in 2002.
- No prior studies have reported OAB prevalence in cervical spondylotic myelopathy (CSM) patients using symptom questionnaires.
- CSM is a condition affecting the spinal cord in the neck.
Purpose of the Study:
- To determine the prevalence of OAB in patients with CSM.
- To assess the post-operative improvement of OAB symptoms in CSM patients after laminoplasty.
- To investigate the potential causes of OAB in this patient population.
Main Methods:
- 106 patients with CSM undergoing laminoplasty were evaluated.
- Patients were categorized into OAB and non-OAB groups using the Overactive Bladder Symptom Score (OABSS) pre-surgery and 1 year post-surgery.
- Clinical outcomes and OAB symptom improvement were assessed one year after surgery.
Main Results:
- OAB was identified in 50 out of 106 patients (47.2% prevalence).
- Only 28% (14 out of 50) of patients with OAB experienced symptom improvement one year post-surgery.
- Both groups showed good improvement in Japanese Orthopedic Association (JOA) scores, with no significant difference between OAB and non-OAB groups.
Conclusions:
- Post-operative OAB symptom improvement in CSM patients is limited.
- OAB in this context is likely due to non-neurogenic and idiopathic factors rather than neurogenic causes related to CSM.
- Informed consent discussions should include the low likelihood of OAB symptom improvement post-surgery for CSM patients.
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