1. Are you over 18 years old?

2. Do you suffer chronic pain for at least 6 months

3. Do you have one of the following primary indications:

• Chronic low back/leg pain
• Complex regional pain syndrome
• Neuropathic pain syndrome
• Ischaemic pain syndrome

4. Is your pain severity at least 5 out of 10 pain score (VAS >5) having a substantial impact on daily functioning and quality of life?

5. Have other treatments such as trials of medication and/or minimally invasive treatments (such as local anaesthetic nerve blocks) failed to help or are you experiencing intolerable side effects of these treatments?

6. No clear surgical options are expected to help