Pain medicine

Spinal cord stimulation for chronic pain: a retrospective cohort study of patients from a Canadian tertiary centre

Can J AnaesthPublished Retrospective cohort study

Authors' conclusion

In this cohort of patients who underwent SCS implantation at a Canadian tertiary centre, infection and lead migration rates were consistent with global estimates (3.8% and up to 27%, respectively); nevertheless, we observed high rates of dural puncture compared with an expected incidence of 0.48%.

Study context

Population
Patients who underwent spinal cord stimulation (SCS) implantation at a Canadian tertiary centre (St. Michael's Hospital, Toronto), 1 January 2020–31 July 2023
Participants
100 patients
Outcome
Indications, characteristics and complications of SCS
Methodological detailssingle-centre
  • Single-centre

Main finding

As reported in the abstract

Age, mean (SD), yr
62 (14)
Indication: chronic pain after spinal surgery, n
44
Indication: chronic back pain (no prior spine surgery), n
22
Indication: complex regional pain syndrome, n
6
Indication: spinal stenosis, n
4
Indication: visceral pain, n
4
On pharmacotherapy for pain relief at baseline, n
96

Observational data: associations, not effects.

Safety

Complications

Implantable pulse generator-associated pain
47%
Lead migration
14%
Lead fracture
9%
Surgical site infection
2%
Cerebrospinal fluid leak
6%

Original publication

Spinal cord stimulation for chronic pain: a retrospective cohort study of patients from a Canadian tertiary centre. Can J Anaesth. Published 8 July 2025. doi:10.1007/s12630-025-03001-6

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