Table 2.
Number and composition of adult operations performed by subspecialty
| Adult | Pre-COVID-19 | COVID-19 | p value |
|---|---|---|---|
| Number of operations in N (% of total) | 408 (100.0) | 173 (100.0) | |
| Functional | 37 (9.1) | 8 (4.6) | p < 0.01 |
| DBSa for Parkinson’s disease/tremor | 8 (2.0) | 0 (0.0) | |
| Intractable epilepsy/VNSb | 18 (4.4) | 1 (0.6) | |
| Peripheral nerve | 3 (0.7) | 1 (0.6) | |
| Baclofen pump/other | 2 (0.4) | 1 (0.6) | |
| DBS battery change | 5 (2.7) | 5 (2.9) | |
| Spinal | 145 (35.5) | 51 (29.5) | p < 0.01 |
| Myelopathy | 28 ( 6.9) | 8 (4.6) | |
| Radiculopathy | 73 (17.9) | 13 (7.5) | |
| Cauda equina syndrome | 26 (6.4) | 14 (8.1) | |
| MSCCd and spinal tumour | 14 (3.4) | 15 (8.7) | |
| Spinal haematoma and other | 4 (1.0) | 1 (0.6) | |
| Trauma | 50 (12.3) | 31 (17.9) | p > 0.05 |
| Acute subdural hematoma | 9 (2.2) | 3 (1.7) | |
| Chronic subdural hematoma | 26 (6.4) | 19 (11.0) | |
| Extradural hematoma | 4 (1.0) | 2 (1.2) | |
| Traumatic brain injury/other | 0 (0.0) | 1 (0.6) | |
| Traumatic vertebral fracture | 11 (2.7) | 5 (2.9) | |
| Vascular | 22 (5.4) | 9 (5.2) | p > 0.05 |
| Aneurysm | 9 (2.2) | 1 (0.6) | |
| Intracranial haemorrhage | 5 (1.2) | 5 (2.9) | |
| Ischemic stroke | 1 (0.2) | 1 (0.6) | |
| Arteriovenous malformation | 7 (1.7) | 0 (0.0) | |
| Arteriovenous fistula | 1 (0.2) | 2 (1.2) | |
| Oncology | 60 (14.7) | 31 (17.9) | p > 0.05 |
| Low-grade glioma | 4 (1.0) | 1 (0.6) | |
| High-grade glioma | 31 (7.6) | 12 (6.9) | |
| Cerebral metastasis | 6 (1.5) | 6 (3.5) | |
| Meningioma | 13 (3.2) | 7 (4.0) | |
| Other | 6 (1.5) | 5 (2.9) | |
| Skull base | 36 (8.8) | 7 (4.0) | p > 0.05 |
| Pituitary adenoma/apoplexy | 16 (3.9) | 3 (1.7) | |
| Sphenoid wing meningioma | 5 (1.2) | 2 (1.2) | |
| Vestibular schwannoma | 6 (1.2) | 0 (0.0) | |
| Chiari malformation | 5 (1.2) | 0 (0.0) | |
| Chondrosarcoma | 2 (0.5) | 0 (0.0) | |
| Trigeminal neuralgia | 1 (0.2) | 0 (0.0) | |
| Craniopharyngioma | 1 (0.2) | 2 (1.2) | |
| Other | 58 (14.2) | 37 (21.4) | p > 0.05 |
| Hydrocephalus | 30 (7.4) | 18 (10.4) | |
| Primary infections | 7 (1.7) | 4 (2.3) | |
| Secondary infections | 15 (3.7) | 11 (6.4) | |
| Post-operative hematoma | 2 (0.5) | 0 (0.0) | |
| CSF leak/pseudomeningocele | 4 (1.0) | 4 (2.3) |
aDeep brain stimulation
bVagal nerve stimulator
cMetastatic spinal cord compression
dCerebrospinal fluid