INTRODUCTION AND DEFINITION
The spine supports the body, enables movement and protects the spinal cord and nerves. It includes the cervical (neck), thoracic (mid-back) and lumbar (lower-back) regions. Spine surgery refers to a range of procedures intended to relieve pressure on neural structures, restore stability or correct selected structural problems.
Conditions that may require surgical assessment include herniated discs, spinal stenosis, spondylolisthesis, certain fractures, progressive spinal deformities, and some tumours or infections. However, not all back or neck pain requires surgery. Decisions are based on the patient's symptoms, physical examination, imaging findings and overall health rather than a scan alone.
CAUSES AND SYMPTOMS
Spinal problems may arise from age-related changes in discs and joints, congenital structural differences, trauma, reduced bone density, inflammatory conditions or tumours. More than one cause may be present.
Symptoms vary with the affected region. They may include neck or back pain, pain radiating into an arm or leg, tingling, numbness, weakness, reduced walking tolerance or problems with balance. Spinal cord involvement may also affect hand coordination and gait. Because similar complaints can have causes outside the spine, a clinical assessment is important.
IMPORTANT: New difficulty passing urine, loss of bladder or bowel control, numbness around the groin or saddle area, or rapidly worsening limb weakness can signal a medical emergency. Seek immediate emergency assessment if these symptoms occur.
DIAGNOSIS AND ASSESSMENT
Assessment begins with the history and progression of symptoms. A neurological and physical examination may assess strength, reflexes, sensation, walking and spinal movement. X-rays can show spinal alignment; magnetic resonance imaging (MRI) assesses discs, nerves and the spinal cord; and computed tomography (CT) provides detailed views of bone. Electromyography (EMG), nerve studies or blood tests may be useful in selected cases.
An abnormality visible on imaging is not necessarily the cause of pain. Treatment decisions, especially those involving surgery, should reflect how well examination and imaging findings match the patient's symptoms.
TREATMENT OPTIONS
Care is tailored to the underlying condition and its severity. For suitable patients, initial treatment may include activity modification, medication prescribed or recommended by a clinician, personalised exercise programmes and physiotherapy. Selected patients with nerve-related pain may also be considered for injections. The expected benefits and limitations of these options differ between individuals.
Surgery may be considered when disabling symptoms persist despite appropriate non-surgical care, when clinically significant nerve compression is confirmed, when neurological function is progressively deteriorating or when the spine is unstable. Severe injuries, spinal cord compression and certain emergency nerve-compression syndromes may require prompt surgical assessment.
THE SURGICAL PROCESS WHEN SURGERY IS NEEDED
The procedure depends on the specific diagnosis and goal. Removing part of a herniated disc (discectomy) or enlarging the spinal canal (decompression/laminectomy) can reduce pressure on nerves. When stability is a concern, stabilisation and spinal fusion may be appropriate. Deformities, fractures and tumours require different operative plans.
Before an operation, the team discusses expected benefits, alternatives, anaesthetic considerations and individual risks. Surgery may use an open or, where suitable, a minimally invasive approach; smaller incisions are not the best choice for every patient. Possible complications vary by procedure and can include infection, bleeding, nerve injury, leakage of cerebrospinal fluid, blood clots or symptoms that do not fully improve.
RECOVERY AND THE POSTOPERATIVE PERIOD
Recovery depends on the operation, the condition being treated and the person's general health. Mobilisation may begin relatively early after some procedures, whereas recovery and bone healing after a fusion can take longer. The individual plan may involve safe early movement, wound care, gradual walking, physiotherapy when appropriate and scheduled follow-up visits.
Pain, numbness and weakness do not always improve at the same rate, and longstanding nerve damage may not fully reverse. New or worsening weakness, changes in bladder or bowel control, high fever or significant wound drainage after surgery require prompt medical advice; severe neurological symptoms warrant emergency care.