Sciatica

What Is Sciatica?

Sciatica occurs when the sciatic nerve becomes irritated, inflamed, or compressed. The sciatic nerve originates from the lower spinal nerves within the lumbar spine and travels through the buttocks and down each leg.

Compression of the nerve may lead to pain, tingling, numbness, or weakness affecting the lower back, buttock, leg, or foot.

Sciatica itself is not a diagnosis but rather a symptom of an underlying spinal condition affecting the lower spine.

Common Symptoms of Sciatica

The symptoms of sciatica vary depending on the location and severity of nerve compression.

Common symptoms may include:

• Sharp or burning pain radiating down the leg
• Lower back pain
• Buttock discomfort
• Tingling or pins and needles
• Numbness in the leg or foot
• Muscle weakness
• Pain worsening while sitting
• Difficulty standing or walking for prolonged periods
• Electric shock-like pain during movement

Symptoms often affect one side of the body, although severity can vary considerably between individuals.

What Causes Sciatica?

Several spinal conditions may contribute to compression or irritation of the sciatic nerve.

Common causes include:

• Slipped disc (lumbar disc prolapse)
• Spinal stenosis
• Degenerative disc disease
• Spondylolisthesis
• Spinal arthritis
• Nerve inflammation
• Previous spinal injury
• Piriformis syndrome

Age-related wear and tear affecting the lumbar spine may also contribute to nerve compression and chronic sciatic symptoms.

How Sciatica Can Affect Daily Life

Sciatica can significantly interfere with routine activities and overall quality of life.

Patients may experience difficulty:

• Sitting comfortably
• Driving long distances
• Walking for prolonged periods
• Sleeping normally
• Working at a desk
• Exercising
• Lifting or bending

Persistent nerve pain may also affect concentration, productivity, emotional wellbeing, and physical activity levels.

Many individuals in London seek specialist spinal assessment when symptoms persist despite physiotherapy, exercise programmes, or pain management.

When Should You Seek Specialist Assessment?

Although some mild episodes improve naturally, specialist assessment may be recommended if symptoms:

• Persist beyond several weeks
• Become progressively worse
• Cause weakness in the leg or foot
• Lead to numbness or tingling
• Interfere with walking or sleep
• Do not improve with conservative treatment
• Occur repeatedly

Patients experiencing persistent sciatic nerve pain in London may benefit from neurological examination and spinal imaging to identify the underlying cause.

Emergency Symptoms Requiring Urgent Medical Attention

Rarely, severe spinal nerve compression may cause symptoms requiring urgent emergency assessment.

• Loss of bladder or bowel control
• Numbness around the groin or saddle area
• Rapidly worsening leg weakness
• Difficulty walking

These symptoms may indicate cauda equina syndrome, a serious spinal emergency requiring immediate medical attention.

How Sciatica Is Diagnosed

Diagnosis begins with a detailed clinical history and neurological examination.

Investigations may include:

• MRI scan of the lumbar spine
• CT scan
• X-rays
• Nerve conduction studies

MRI imaging is particularly useful for identifying disc prolapse, spinal stenosis, nerve compression, and degenerative spinal conditions affecting the lumbar spine.

Advanced imaging helps determine the most appropriate treatment approach based on the underlying spinal condition.

Non-Surgical Treatment for Sciatica

Physiotherapy

Structured physiotherapy programmes may help improve spinal mobility, strengthen supporting muscles, and reduce nerve irritation.

Exercise Rehabilitation

Targeted stretching and strengthening exercises may support recovery and improve flexibility.

Medication

Anti-inflammatory medication and pain relief may help reduce discomfort during recovery.

Activity Modification

Temporary changes to lifting, prolonged sitting, or repetitive movements may help reduce pressure on the sciatic nerve.

Posture Improvement

Improving posture and workstation ergonomics may help minimise strain on the lumbar spine.

Spinal Injections for Sciatica

Some patients with persistent nerve pain may benefit from spinal injections designed to reduce inflammation around compressed nerves.

These may include:

• Epidural steroid injections
• Nerve root injections
• Facet joint injections

Injection therapy may provide temporary or longer-term symptom relief in selected patients.

Minimally Invasive Surgery for Sciatica

Patients with severe nerve compression, persistent neurological symptoms, or disabling leg pain may occasionally require surgical treatment.

Modern minimally invasive spinal surgery techniques aim to reduce tissue disruption and support faster recovery where appropriate.

Surgical procedures may include:

• Microdiscectomy
• Lumbar decompression surgery
• Endoscopic spinal surgery
• Spinal stabilisation procedures

The most appropriate treatment approach depends on imaging findings, symptom severity, and overall spinal health.

Recovery After Sciatica Treatment

Recovery timelines vary depending on the underlying spinal condition and treatment approach used.

Many patients improve with physiotherapy, rehabilitation, and conservative treatment. Patients undergoing surgery may require gradual rehabilitation and strengthening exercises during recovery.

Early treatment may improve symptom control, mobility, and long-term spinal health.

Preventing Sciatica Recurrence

Several lifestyle measures may help reduce the risk of recurring sciatic nerve pain.

• Maintain regular physical activity
• Strengthen core muscles
• Improve posture
• Use safe lifting techniques
• Avoid prolonged sitting
• Maintain healthy body weight
• Perform stretching exercises regularly

Long-term spinal health often depends on posture awareness, flexibility, mobility, and maintaining an active lifestyle.

Living With Chronic Sciatica

Some patients experience chronic or recurrent sciatic nerve symptoms affecting mobility, sleep, work, and physical activity.

Persistent nerve irritation may contribute to muscle weakness, reduced exercise tolerance, and emotional stress over time.

Patients with ongoing symptoms in London may benefit from specialist spinal assessment to determine whether underlying lumbar disc disease, spinal stenosis, or degenerative spinal conditions are contributing to continued nerve compression.

Early diagnosis and structured treatment may improve mobility, reduce pain, and support long-term recovery.

Specialist Sciatica Assessment in London

Mr Bhaskar Thakur is a consultant neurosurgeon in London with expertise in degenerative spinal conditions, nerve compression disorders, minimally invasive spinal surgery, and complex spinal pathology.

Patients across Central London, Harley Street, and Essex may seek specialist assessment for persistent sciatica, lower back pain, spinal stenosis, and lumbar disc prolapse.

Early diagnosis and appropriate management may help relieve symptoms, improve mobility, and support long-term spinal health.

Reviewed by Mr Bhaskar Thakur

Mr Bhaskar Thakur is a consultant neurosurgeon specialising in minimally invasive spinal surgery, nerve compression disorders, degenerative spinal disease, and advanced neurosurgical conditions in London and Essex.