Plain-language answers to the questions patients ask most before brain and spine surgery.
A slipped (herniated) disc occurs when the soft inner core of a spinal disc pushes through its outer wall and presses on a nearby nerve root or the spinal cord. Most slipped discs — around 80–90% — improve within 6–12 weeks with rest, physiotherapy, anti-inflammatory medication, and activity modification, and do not need an operation.
Surgery becomes necessary when one or more of the following are present: severe leg or arm pain that has not responded to at least 6 weeks of proper conservative treatment; progressive weakness in a limb (foot drop, weak grip); loss of bladder or bowel control or numbness in the saddle area (cauda equina syndrome — a surgical emergency); or a disc fragment so large it is causing significant, worsening neurological deficit on MRI. In these situations, delaying surgery risks permanent nerve damage.
The decision is never based on pain alone — it is based on correlating your symptoms, a careful neurological examination, and MRI findings. Many patients with a disc bulge on MRI never need surgery; a smaller number with genuine neurological compromise benefit greatly from timely intervention, often through minimally invasive or endoscopic techniques with rapid recovery.
Unilateral Biportal Endoscopy (UBE) is a minimally invasive spine technique that uses two small (4–6mm) incisions instead of one large one. One portal holds a high-definition endoscope providing continuous magnified irrigated visualisation; the other holds conventional surgical instruments — allowing the surgeon to work almost as they would in open surgery, but through keyhole incisions.
Because the two portals are separate, the surgeon has freedom to angle instruments and the scope independently, giving better maneuverability than single-portal (uniportal) endoscopy for many decompression and discectomy procedures, while causing far less muscle and bone disruption than conventional open or microscopic surgery.
UBE is used for disc herniations, spinal stenosis (lumbar decompression), and increasingly for certain fusion procedures. Benefits typically include less muscle damage, reduced blood loss, less post-operative pain, shorter hospital stay (often same-day or next-day discharge), and a faster return to daily activity compared with open surgery — with comparable long-term outcomes for appropriately selected patients.
Conventional (open/microscopic) surgery uses a larger incision, retracts back muscles to expose the spine, and gives the surgeon a direct or microscope-magnified view. It remains the gold standard for complex deformity correction, multi-level disease, significant instability, and revision surgery, where wide exposure is genuinely required.
Endoscopic surgery (uniportal or biportal/UBE) uses one or two keyhole incisions and a camera for visualisation, with irrigation fluid keeping the surgical field clear. For well-selected single or two-level disc herniations and spinal stenosis, this approach causes less muscle and ligament damage, less intraoperative bleeding, less post-operative pain, and typically allows same-day or next-day discharge with a quicker return to work.
Neither approach is universally “better” — the right choice depends on the specific pathology, number of levels involved, spinal stability, prior surgery, and patient factors. A thorough clinical assessment and MRI review determines which technique offers the safest, most durable outcome for each individual patient.
A cervical (neck) disc herniation can compress a nerve root, causing pain, numbness, or weakness radiating into the shoulder, arm, or hand, or it can compress the spinal cord itself, causing cervical myelopathy — clumsiness of the hands, unsteady gait, and worsening coordination.
Most cervical radiculopathy (nerve root compression) improves with physiotherapy, cervical traction, anti-inflammatory medication, and activity modification over several weeks. Surgery is recommended when arm pain or weakness persists despite adequate conservative treatment, when weakness is progressive, or when imaging confirms significant nerve compression matching the clinical picture.
Cervical myelopathy (spinal cord compression) is treated differently: once diagnosed, surgery is usually advised proactively even with mild symptoms, because cord compression tends to worsen gradually and — unlike nerve root pain — the resulting deficits are less likely to reverse if surgery is delayed. Common procedures include Anterior Cervical Discectomy and Fusion (ACDF), Cervical Disc Replacement, or Posterior Cervical Laminoplasty, chosen based on the number of levels, direction of compression, and neck alignment.
Recovery timelines vary considerably with the procedure performed. After minimally invasive or endoscopic discectomy, most patients are walking within hours and discharged the same or next day, with a return to desk work in 1–2 weeks and to full activity by 4–6 weeks. Open decompression or fusion surgery typically involves a 2–4 day hospital stay, with gradual return to normal activity over 6–12 weeks, and fusion consolidation continuing for several months.
In the first 2–4 weeks after any lumbar surgery, patients are generally advised to avoid heavy lifting, prolonged sitting, and bending or twisting at the waist, while gentle walking is encouraged from day one to prevent stiffness and blood clots. A structured physiotherapy programme — focusing on core strengthening and safe movement patterns — usually begins around 2–3 weeks post-surgery and is one of the strongest predictors of a full, durable recovery.
Most patients experience significant improvement in leg pain almost immediately after decompression surgery, though back pain and surgical-site discomfort settle more gradually over several weeks. Regular follow-up allows recovery to be tracked and the rehabilitation plan adjusted as needed.
Spinal stenosis is a narrowing of the spinal canal that compresses nerves, most often in the lower back. The hallmark symptom is neurogenic claudication — leg pain, heaviness, or cramping that worsens with walking or standing and eases when sitting or bending forward.
Conservative treatment — physiotherapy, anti-inflammatory medication, and occasionally epidural steroid injections — is the first step for mild to moderate symptoms and helps a meaningful proportion of patients avoid surgery altogether.
Surgery is considered when walking distance becomes significantly limited, symptoms fail to improve with conservative care over several months, or there are signs of nerve compromise such as progressive weakness. Decompression surgery — often performed endoscopically or through a minimally invasive tubular approach — relieves pressure on the nerves without needing spinal fusion in most cases, and patients typically notice improvement in leg symptoms very quickly after surgery.
Spondylolisthesis occurs when one vertebra slips forward over the one below it, most commonly at the base of the spine. It can cause lower back pain, leg pain, and in some cases a sensation of instability when standing or walking.
Mild slips are frequently managed with physiotherapy focused on core stability, activity modification, and pain management, and many patients never require surgery.
Surgery is recommended for higher-grade slips, progressive slippage, or persistent pain and neurological symptoms despite conservative treatment. The standard approach is spinal fusion — often performed as minimally invasive TLIF — which stabilises the affected segment with a cage and screws through two small incisions, relieving nerve compression while restoring stability.
Brain tumour symptoms depend heavily on the tumour’s size, growth rate, and location, and often develop gradually over weeks to months. Common general symptoms include a new or changing headache pattern (often worse in the morning or with coughing/straining), nausea and vomiting unrelated to other causes, and new-onset seizures in someone with no prior seizure history.
Location-specific symptoms can include: weakness or numbness on one side of the body (frontal or motor cortex tumours); difficulty speaking or understanding language (tumours near speech areas); vision changes, double vision, or visual field loss (tumours near the optic pathways or occipital lobe); balance problems and unsteady gait (cerebellar tumours); and personality or memory changes (frontal or temporal lobe tumours).
Most headaches are not caused by a brain tumour. However, any headache accompanied by new neurological symptoms — weakness, seizures, vision loss, persistent vomiting, or personality change — warrants prompt medical evaluation and an MRI scan to rule out a structural cause.
Not every brain tumour needs surgery. Small, asymptomatic, slow-growing tumours (such as some meningiomas) discovered incidentally are often simply monitored with periodic MRI scans, since observation alone may be appropriate for years.
Surgery is generally recommended when the tumour is causing symptoms from mass effect or pressure (headache, weakness, seizures, vision changes); when it is growing on serial scans; when tissue diagnosis is needed to guide further treatment (particularly for suspected malignant tumours, where a biopsy or resection confirms the tumour type and grade); or when the tumour is in a location where growth would soon threaten critical function or become unsafe to operate on if left untreated.
The goal of surgery is always maximum safe resection — removing as much tumour as possible while preserving neurological function — supported by tools such as intraoperative neuronavigation, awake mapping, and neuromonitoring. For malignant tumours, surgery is typically followed by radiotherapy and/or chemotherapy as part of a comprehensive treatment plan.
Awake craniotomy is a technique used to remove brain tumours located near critical “eloquent” areas that control speech, language, or movement. The patient is sedated for the opening and closing of the skull but is kept awake and comfortable during the actual tumour removal, using local anaesthesia at the incision site — the brain itself has no pain receptors.
While awake, the patient performs simple tasks — naming objects, counting, moving a hand or foot, or reading — while the surgical team uses gentle electrical stimulation to map the exact boundaries of functional brain tissue in real time. This allows the surgeon to remove tumour tissue right up to, but not into, the areas essential for speech or movement.
The major benefit of this approach is that it allows more complete, safer tumour removal than would be possible under general anaesthesia alone, directly reducing the risk of permanent speech or motor deficits after surgery. Most patients tolerate the awake portion well and recall little discomfort, as the process is carefully explained and rehearsed beforehand.
Trigeminal neuralgia causes sudden, severe, electric-shock-like facial pain along the distribution of the trigeminal nerve, often triggered by light touch, chewing, or brushing teeth. It is frequently caused by a blood vessel compressing the trigeminal nerve root near the brainstem.
First-line treatment is medical: anticonvulsant medications such as carbamazepine or oxcarbazepine control pain in the majority of patients, especially early in the disease course.
When medication becomes ineffective, poorly tolerated due to side effects, or pain recurs, procedural options are considered. Microvascular Decompression (MVD) is the definitive surgical treatment — a small craniotomy is performed to locate the offending blood vessel and gently cushion it away from the nerve with a small pad, relieving pressure permanently without damaging the nerve. It offers the highest rate of complete, durable pain relief among all treatment options and is generally preferred in younger, fit patients.
Alternative options for patients who are not surgical candidates include stereotactic radiosurgery (Gamma Knife) — a non-invasive, focused radiation treatment to the nerve root — and percutaneous procedures such as balloon compression or radiofrequency rhizotomy, which are less invasive but generally carry a higher chance of pain recurrence over time than MVD.
Deep Brain Stimulation (DBS) is a surgical option for Parkinson’s disease when tremor, rigidity, or motor fluctuations are no longer well controlled by medication alone, or when medication side effects become difficult to manage. It involves implanting thin electrodes into a precise target deep within the brain, connected to a pacemaker-like pulse generator placed under the skin of the chest.
Candidates are carefully selected through a multidisciplinary assessment, typically including patients who still respond well to levodopa but experience shortened "on" periods or troublesome dyskinesia. DBS does not cure Parkinson’s disease, but it can dramatically reduce tremor and rigidity and often allows a meaningful reduction in medication dose.
The surgery is performed with precise neuronavigation guidance, and stimulation settings are fine-tuned over subsequent visits to achieve the best balance of symptom control and side effects. Many patients describe the improvement in quality of life and independence as transformative.
Hydrocephalus is an abnormal build-up of cerebrospinal fluid (CSF) within the brain’s ventricles, which can raise pressure inside the skull and cause headache, nausea, blurred vision, and in older adults, gait disturbance, cognitive decline, and urinary incontinence.
Two main surgical options exist. A ventriculoperitoneal (VP) shunt uses a thin silicone tube and a programmable valve to continuously drain excess CSF from the brain to the abdomen, where it is naturally absorbed. Endoscopic Third Ventriculostomy (ETV) instead creates a small internal opening that allows CSF to bypass the obstruction entirely, avoiding the need for an implanted device in suitable patients.
Both procedures are highly effective at relieving symptoms, and the choice between them depends on the underlying cause of hydrocephalus and individual patient factors, which are assessed on MRI and clinical examination before surgery.