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Motor cortex stimulation for phantom limb pain: comprehensive therapy with spinal cord and thalamic stimulation
Y Katayama1, T Yamamoto, K Kobayashi
1Department of Neurological Surgery, Nihon University School of Medicine, Tokyo, Japan. ykatayam@med.nihon-u.ac.jp
Stereotactic and Functional Neurosurgery
|October 16, 2002
Summary
Spinal cord stimulation (SCS) and deep brain stimulation (DBS) of the thalamic nucleus ventralis caudalis (VC) show promise for phantom limb pain. DBS achieved higher long-term pain control rates than SCS or motor cortex stimulation (MCS).
Area of Science:
- Neurology
- Pain Management
- Neurosurgery
Background:
- Phantom limb pain (PLP) is a challenging condition affecting many amputees.
- Current treatments for PLP have limited efficacy, necessitating novel therapeutic approaches.
Purpose of the Study:
- To evaluate the effectiveness of spinal cord stimulation (SCS), deep brain stimulation (DBS) of the thalamic nucleus ventralis caudalis (VC), and motor cortex stimulation (MCS) for managing phantom limb pain.
Main Methods:
- Nineteen patients with PLP were assessed.
- All patients initially received SCS; those with inadequate pain relief were considered for DBS and/or MCS.
- Comparative efficacy of DBS and MCS was analyzed in a subset of patients.
Main Results:
- Long-term satisfactory pain control was achieved in 32% with SCS, 60% with DBS, and 20% with MCS.
- SCS and DBS of the VC demonstrated significant pain reduction, often resulting in long pain-free intervals.
- In four patients, MCS and DBS of the VC were compared, with two preferring DBS and one preferring MCS.
Conclusions:
- Deep brain stimulation (DBS) of the thalamic nucleus ventralis caudalis (VC) appears to be a highly effective treatment for phantom limb pain.
- While SCS is a viable option, DBS of the VC shows superior long-term pain control rates.
- Currently, there is no clear evidence supporting the superiority of motor cortex stimulation (MCS) over SCS or DBS of the VC for PLP.