Cauda equina syndrome (CES) is a rare but serious medical emergency. When the nerves at the base of the spinal cord become compressed, the consequences can be life‑changing. Prompt diagnosis and urgent decompression surgery can prevent permanent damage to a patient’s bowel, bladder, sexual function and mobility. Delays at any stage of NHS assessment, including scanning or surgical treatment, can result in catastrophic and avoidable disability. Despite increasing awareness, CES continues to feature heavily in high‑value medical negligence claims. General practitioners, emergency departments, radiology teams and spinal surgical services must work together seamlessly. When that system breaks down, injured patients are entitled to compensation for the disability and financial losses caused by avoidable delays or errors. This is not a new problem. In 2019, the BBC brought awareness to how critical early diagnosis of cauda equina is, and how failing to identify and treat it is costing the NHS hundreds of millions a year. A missed or late diagnosis of CES continues to cost the NHS hundreds of millions of pounds each year, and crucial rapid escalation remains to a patient’s outcome. Julie Marsh, a partner in Boyes Turner’s medical negligence team and a specialist in cauda equina claims, regularly acts for clients whose lives have been permanently altered by failures in CES care. Here, Julie explains what really determines the success of a CES claim. What is the key to winning a cauda equina claim? In almost every CES case, the decisive factor is the patient’s factual evidence. Unless the patient’s symptoms of CES were clearly documented in the medical records - and the clinician still failed to act - there is almost always a dispute about what was actually said, done or the symptoms the patient experienced at relevant times during their treatment journey. How the court resolves this dispute is often the difference between success and failure. What evidence is needed in a Cauda Equina claim? Specialist expertise is essential. CES is a complex, fast‑developing condition, and the court must understand the timing, sequence, and subtle progression of symptoms. It is not enough to ask, “What happened?”. A solicitor must understand: how CES develops, the significance of subtle changes in bladder or bowel function, or loss of sensation in the perineal area, and what a competent doctor should have done at each point. Clients often do not realise the importance of specific details - such as the exact timing of urinary urgency, incomplete voiding, retention or loss of bladder sensation. If these details are missing, the strength, speed and value of the claim can be affected. When should the client statement be taken, and what must it include? As early as possible. If important information appears late in proceedings, the defendant may argue that the client’s memory is unreliable. CES involves highly personal symptoms relating to: bladder and bowel function, anal tone, perineal and genital sensation, lower limb weakness or numbness. We approach these discussions sensitively. A detailed, accurate statement must: set out the client’s best recollection, establish what they cannot remember, and why, explain how symptoms progressed over time. Poorly explored evidence can give the court the wrong impression - either that symptoms were milder (suggesting no negligence) or worse (suggesting earlier surgery would not have changed the outcome). As part of the statement process, we will also explore whether social media posts or other electronic evidence might be available to support the client’s recollection of events. In some cases, this evidence can be invaluable where medical record entries are scarce or non-existent or do not comment on the progression of symptoms. Can evidence from family or friends help in a Cauda Equina claim? Yes. Anyone the patient spoke to about their symptoms may provide crucial corroboration - especially about timing, deterioration, and what was said at medical appointments. How do you prove what you told NHS services over the phone? NHS helpline calls are recorded, and transcripts can be obtained. Call logs, messages and texts can all demonstrate what symptoms were reported and when. Call to ambulance services are recorded as well, and can hold vital information on a patient’s symptoms prior to their arrival at the hospital. What medical evidence is needed to succeed in a Cauda Equina claim? GP negligence If the issue relates to a failure to recognise “red flag” symptoms or arrange urgent referral, an independent GP expert will comment on the standard of care based on the guidelines in place at the relevant time. Importance of proving symptoms at the GP appointment The patient’s symptoms at the time of assessment determine: whether an urgent referral was required, whether correct advice should have been given, whether earlier treatment would have prevented injury. The NICE guidelines (2009 and updated in 2017) set out the minimum standard of care. Since 2009, doctors have been expected to warn patients with sciatica to seek urgent help if CES red flags develop, including: saddle anaesthesia, bladder dysfunction, bowel dysfunction, bilateral neurological deficits. The 2017 update expanded the list and emphasised the need for detailed safety‑netting advice. Hospital negligence Claims often involve emergency departments that: failed to take a sufficient history, did not test anal tone or perineal sensation, overlooked the significance of symptoms, or delayed MRI scanning or referral to spinal/neurosurgical teams. Radiology negligence Some claims arise from misinterpreted MRI scans - particularly when radiologists were not given key clinical information. Surgical negligence Surgery should take place as soon as possible when evolving CES is identified. Experts determine: whether surgery was delayed, what the outcome would have been with timely surgery, whether surgical errors (e.g., incomplete decompression) occurred. Early surgery - ideally within hours - can make the difference between meaningful recovery and permanent damage. Since 2023, NHS Guidance has been available under the Getting It Right First Time CES Pathway to all clinicians considering a patient presenting with lower back pain and other symptoms to help direct the next step in investigating a patient’s condition. A failure to follow these guidelines can be evidence of negligent care in cases involving cauda equina. How much compensation could a client get in a cauda equina claim? Before valuing the claim, we assess what the client’s condition would have been with correct care. Compensation covers only the injury caused by negligence, not the underlying spinal condition itself. CES affects each person differently. We work closely with clients and their families to understand the full impact on: independence, work, mobility, relationships, psychological wellbeing, long‑term care needs. Expert evidence may be required from specialists in: neurosurgery, urology, colorectal surgery, physiotherapy, occupational therapy, care, employment, accommodation, and psychology/psychiatry. Awards vary widely but typically range from £100,000 to well over £1 million, depending on the extent of the avoidable injury and lifelong needs. Cauda Equina legal advice If you or a family member has experienced a delay in diagnosis of cauda equina syndrome and you would like to find out more about funded rehabilitation or making a claim for compensation, you can talk to one of our experienced solicitors, free and confidentially, by contacting us.
