Waking up from knee replacement surgery, you expect a clear path to recovery. You planned for physical therapy, rest, and a gradual return to the activities you love. You did not plan on your foot dragging when you walk, or losing feeling in your lower leg. When a procedure designed to restore your mobility leaves you with new physical challenges, the physical and emotional impact is overwhelming.
It is completely normal to feel confused and frustrated right now. Many patients in this situation struggle to get clear answers from their healthcare providers. You might be wondering if this new difficulty is just a normal part of the healing process, or if something went wrong in the operating theatre.
We listen to patients dealing with these exact concerns every day. We understand how isolating it feels when your recovery does not go to plan. This guide will help you understand peroneal nerve damage, explain your legal rights as a patient in Ireland, and outline the exact steps you can take to put things right.
Understanding Peroneal Nerve Damage and Foot Drop
To understand what is happening to your body, it helps to look at the nerves in your leg. The peroneal nerve is a branch of the sciatic nerve that runs down the outside of your lower leg. It controls the muscles that allow you to lift your ankle and toes upward.
During knee replacement surgery, this nerve is highly vulnerable because it sits very close to the surface of the skin, just below the knee joint. If the nerve is stretched, compressed, or damaged during the operation, it stops sending the correct signals to your muscles.
This results in a condition commonly known as ‘foot drop’. Patients often describe a heavy sensation in their lower leg. You might notice your toes dragging on the floor when you step forward, causing you to trip. To compensate, many people develop a high-stepping walk, lifting their knee higher than usual to clear the ground. You may also feel numbness, tingling, or pain along the top of your foot and the outside of your calf.
Surgical Risk vs. Medical Negligence
Every surgery carries some level of risk. However, there is a clear difference between an accepted surgical complication and a preventable medical error.
Sometimes, despite a surgeon doing everything perfectly, the nerve gets stretched simply because the leg is being straightened for the first time in years. In other instances, foot drop happens because the surgical team failed to meet the required standard of care. Common causes of preventable peroneal nerve damage include:
- Tourniquet misuse: Surgeons use a tight band (tourniquet) around the thigh to control bleeding. If it is applied too tightly or left on for too long, it can severely compress the nerve.
- Incorrect retractor placement: Surgical tools used to hold tissues back (retractors) can press directly against the peroneal nerve if placed carelessly.
- Improper positioning: If your leg is positioned incorrectly on the operating table for a prolonged period, pressure injuries can occur.
In Ireland, we use the Dunne principles to determine if medical negligence occurred. This is a legal test that asks a simple question: did your medical team fail to provide the standard of care that any other reasonably competent medical professional would have provided in the same situation? If another competent surgeon would have protected the nerve, your injury may be the result of negligence.
Standards of Care in Ireland
Orthopaedic surgeons in Ireland must follow strict clinical guidelines, such as those set out by the Royal College of Surgeons in Ireland (RCSI) and the British Orthopaedic Association (BOA). These standards exist to protect you at every stage of your treatment.
Pre-operative Planning
Before your surgery, your medical team must carefully assess your individual risks. Certain factors, like severe pre-existing knee deformities or a low body mass index (BMI), can make your peroneal nerve more vulnerable. Your surgeon should plan the procedure with these specific risks in mind.
Intra-operative Safety
During the operation, the team must carefully monitor tourniquet times and pressure limits. They must also take great care when placing surgical instruments and positioning your leg to avoid placing unnecessary stress on the nerve.
Post-operative Monitoring
The hours immediately following your surgery are critical. Hospital staff must actively monitor your nerve function. They should check your ability to move your toes and assess the sensation in your foot. Catching nerve damage early often dictates how well you will recover. If staff fail to perform these vital checks and a nerve injury goes unnoticed, it can drastically reduce your chances of a full recovery.
The Importance of Informed Consent
Before you undergo any operation, you have a fundamental right to know what could go wrong. Your surgeon has a strict legal duty to explain the material risks associated with a knee replacement, including the specific risk of nerve damage and foot drop.
In Ireland, the law around informed consent is guided by a landmark case known as Fitzpatrick v White. This ruling means a doctor must give you a clear, comprehensive warning about any severe risks that would matter to a reasonable patient. If your surgeon failed to warn you about the risk of foot drop, and you would have reconsidered the surgery had you known, you may have grounds for a claim. We believe you should always have the full picture before making decisions about your health.
Recovery, Prognosis, and Causation
If you are suffering from foot drop, time is of the essence. Nerves heal incredibly slowly, usually at a rate of about one millimetre per day.
Medical experts generally agree there is an 18-month window for nerve regeneration. If the nerve has not recovered within this timeframe, the foot drop is likely permanent. This is why early diagnosis and intervention, such as physiotherapy or using a custom ankle-foot orthosis (a brace to support your foot), are so important for your quality of life.
From a legal standpoint, proving negligence also requires proving ‘causation’. We use the but-for test. This means we must prove that but for the surgeon’s error (for example, leaving the tourniquet on too long), you would not have suffered the nerve damage. We work with independent medical experts who will review your clinical notes to establish exactly how and why your injury happened.
Next Steps for Patients
When you are dealing with a stressful medical issue, taking the next step can feel daunting. We want to make it as straightforward as possible. Here is what you should do to protect your health and your legal rights:
Request a Medical Review
If you have not already done so, report your symptoms to your doctor immediately. Ask for a referral to a neurologist. They will likely recommend an Electromyography (EMG) test or nerve conduction studies. These tests measure the electrical activity in your muscles and nerves, pinpointing exactly where the damage occurred and how severe it is.
Document Your Journey
Keep a brief record of your symptoms, your medical appointments, and any conversations you have with your healthcare providers. Note down how the foot drop is impacting your daily life, your ability to work, and your mental well-being.
Seek Expert Legal Advice
Medical negligence claims are highly complex. You need a specialist team on your side to help you navigate the process. Speak to a solicitor who understands both the legal and medical intricacies of orthopaedic injuries.
Finding Your Way Forward
Living with foot drop changes your life, but you do not have to accept the consequences of a preventable medical error in silence. When medical professionals make mistakes, you deserve accountability, answers, and the financial support necessary to secure your future care.
At HOMS Assist, we care to make a difference. We listen to your story, question what went wrong, and fight your corner. If you suspect your nerve injury was caused by substandard medical care, we are here to help. Reach out to our dedicated medical negligence team today for a confidential, no-obligation conversation about your situation. We will guide you towards a brighter future.
About the author: Marie Moloney is a dedicated solicitor at HOMS Assist, specialising in medical negligence claims. With a strong background in Plaintiff Litigation and a focus on cases involving surgical errors and nerve damage, Marie combines her legal expertise with a compassionate approach to support clients navigating complex medical negligence claims in Ireland.
