Sciatica

Sciatica is a term used to describe pain radiating along the path of the sciatic nerve, which branches from the lower back through the hips and buttocks and down each leg. It commonly occurs when the sciatic nerve is pinched or irritated.

Sciatica is often a symptom of an underlying condition affecting the lower back and the sciatic nerve, which runs from the lower back down through each leg. Common conditions associated with sciatica include:

• Obesity: Excess body weight can put additional pressure on the spine and increase the risk of developing sciatica.
• Smoking: Smoking has been associated with increased inflammation and reduced blood flow, which can negatively impact spinal health and increase the risk of sciatica.
• Sedentary Lifestyle: Lack of regular physical activity and poor fitness can contribute to muscle weakness and poor posture, which may increase the risk of sciatica.
• Diabetes: People with diabetes are at a higher risk of nerve damage, including the sciatic nerve, due to elevated blood sugar levels.
• Trauma or Injury: Previous injuries to the lower back or buttocks, such as fractures or accidents, can increase the risk of sciatica.
• Pregnancy: Pregnant women are at risk of developing sciatica due to the pressure placed on the sciatic nerve by the growing uterus.
• Spinal Abnormalities: Structural abnormalities in the spine, such as a misaligned vertebra or narrow spinal canal, can increase the likelihood of sciatic nerve compression.
• Inflammatory Conditions: Conditions like rheumatoid arthritis or ankylosing spondylitis, which cause inflammation in the spine, may increase the risk of sciatica.

• Pain: Sharp or burning pain that radiates from the lower back or hip down the buttock, thigh, and sometimes into the calf and foot along the path of the sciatic nerve.  With true-sciatica, the pain is typically worse in the leg than in the back and only affects one side.
• Numbness or Tingling: These sensations may be felt along the nerve pathway.
• Weakness: A feeling of weakness or difficulty moving the leg or foot.
• Worsening with Certain Movements: Pain can be exacerbated by bending forwards, sitting for long periods, coughing, sneezing, or during sudden movements.

The intensity of the symptoms can vary from person to person, with some experiencing occasional, mild discomfort, while others suffer from severe and debilitating pain.

• Herniated Disc: A bulging or ruptured intervertebral disc can press on the sciatic nerve.
• Spinal Stenosis: Narrowing of the spinal canal can compress the sciatic nerve.
• Spondylolisthesis: A condition where one vertebra slips over the one below it, potentially compressing the sciatic nerve.
• Trauma: Injuries from falls, accidents, or impacts can harm the lower back and cause sciatica.
• Muscle Strain: While less common, strains and tensions in the lower back muscles can sometimes contribute to sciatica symptoms.
• Pregnancy: The added weight and pressure on the spine during pregnancy can sometimes cause sciatica.
• Tumors or Lesions: Rarely, growths referred to as “space occupying lesions” in the spine can put pressure on the sciatic nerve.

The evidence-based approach to managing sciatica emphasises a thorough assessment to determine the underlying cause, followed by individualised treatment that often begins with conservative management. 

Surgical options are typically considered if non-invasive treatments fail to provide relief. Regular follow-ups and an emphasis on prevention through proper body mechanics are also essential components of evidence-based care for sciatica.

• Physiotherapy: Exercise therapy to restore and improve movement, function and strength is typically highly effective.
• Medication: Over-the-counter pain relievers or prescription medications to manage pain and inflammation.
• Lifestyle Modifications: Avoiding prolonged sitting and incorporating regular exercise.

Sciatica is diagnosed through a clinical evaluation that includes a thorough physical examination, patient history, and possibly imaging tests like MRI or CT scans to assess the underlying cause of the nerve compression or irritation.

targeted exercises guided by a healthcare provider can be beneficial for sciatica, helping to relieve symptoms and strengthen the muscles supporting the spine..

Surgery for sciatica is generally considered a last resort and is typically recommended only when conservative treatments like medication, physical therapy, and lifestyle changes have not provided sufficient relief, or if the condition is severe and worsening. Surgical options may include:

1. Microdiscectomy: To remove the portion of a herniated disc that is pressing on the nerve.
2. Laminectomy: To widen the spinal canal and relieve pressure on the nerve.

Surgery may also be considered urgently in cases of progressive neurological symptoms like weakness or numbness in the legs, or loss of bowel or bladder control.