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A complete spinal cord injury means that no movement or sensation is preserved below the level of the injury, including in the lowest part of the spinal cord. Clinicians classify it as ASIA A, the most severe grade on the ASIA Impairment Scale.
Being told an injury is complete can feel as though every door has closed. It hasn't. A complete injury rarely means the cord has been cut, and with specialist rehabilitation, people build strength, protect their long-term health and regain a remarkable amount of independence. At CN Rehab in Stourbridge, our specialist neurological physiotherapists have supported people with spinal cord injuries for many years. Speak to our spinal cord injury team whenever you are ready.
A complete spinal cord injury is damage that stops all nerve signals passing through the injured area of the spinal cord. There is no voluntary movement and no feeling below that point, right down to the sacral segments (S4 to S5) around the anus. Automatic functions controlled by the cord, such as bladder, bowel, blood pressure and temperature regulation, are also affected.
Spinal teams use a standardised examination called the International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI). It tests sensation and muscle strength across the body, including deep pressure and voluntary contraction around the anus. If any sensation or movement remains at these lowest segments, known as sacral sparing, the injury is incomplete. If none remains, it is complete. MRI and CT scans show the damage, but the hands-on examination decides the classification.
A complete injury rarely means the spinal cord has been cut in two. Most happen when the cord is bruised, crushed or starved of blood supply, often by a fractured or dislocated vertebra. The cord is usually still intact, but too damaged for signals to get through, which is why some change is possible in the early months and why rehabilitation should start as soon as it is safe.
An ASIA A spinal cord injury is the clinical name for a complete injury. The ASIA Impairment Scale, used by spinal teams across the UK, grades every spinal cord injury from A to E. Grade A is complete, with no sensation or movement preserved at S4 to S5. Grade B is sensory incomplete, where some feeling remains below the injury but no movement. Grades C and D are motor incomplete, with some movement preserved, and grade E means sensation and movement have returned to normal.
Some people with an ASIA A injury still have a little feeling or muscle activity in the few segments just below the injury level. This is called the zone of partial preservation, and it is often where early rehabilitation gains appear.
The key difference is whether any signals still cross the damaged area. In an incomplete spinal cord injury [LINK: Incomplete Spinal Cord Injury page], some messages get through, so some feeling or movement remains, and the potential for neurological recovery is greater. In a complete injury, no signals cross, so rehabilitation focuses more on maximising independence, function and long-term health. Both are serious, and both benefit enormously from specialist rehabilitation.
The level of a complete spinal cord injury decides which parts of the body are affected. It is named after the lowest segment that still works normally, so a C5 complete spinal cord injury means C5 functions but nothing below it does. Age, fitness, other injuries and rehabilitation all influence what each person achieves.
Neck injuries cause complete tetraplegia, affecting the arms, hands, trunk and legs. Injuries at C1 to C4 can affect breathing, and the highest levels may need ventilator support. At C5, shoulder movement and elbow bending usually remain, and most people use a powered wheelchair. C6 adds wrist extension, allowing a functional grip, while C7 and C8 add elbow straightening and some finger movement, often making independent transfers achievable. Our dedicated guide to tetraplegia explains each cervical level in more detail.
Injuries in the back cause complete paraplegia, with full use of the arms and hands. A T1 or T4 complete injury leaves limited trunk control, while a T9, T10, T11 or T12 complete spinal cord injury preserves most trunk muscles, making sitting balance, transfers and independent manual wheelchair use far easier to master. Lumbar and sacral injuries mainly affect the legs, and some people can walk short distances with braces and aids.
At every level, a complete injury affects bladder, bowel and sexual function. Injuries at T6 and above also carry a risk of autonomic dysreflexia, a sudden and dangerous rise in blood pressure.
Most complete spinal cord injuries are caused by sudden, high-force trauma that fractures or dislocates the spine, such as road traffic collisions, falls, diving into shallow water, contact sports and assaults. Less often, they result from tumours, infections or a loss of blood supply to the cord. Our guide to cervical spine injury explains how neck injuries affect the spinal cord.
Below the level of injury, a complete injury causes:
For the early warning signs of any spinal cord injury, read our guide to spinal cord injury symptoms.
Spinal shock is a temporary state after a spinal cord injury in which reflexes and muscle activity below the injury switch off. While it lasts, an injury can appear complete even when some pathways have survived. It usually settles over days to weeks, which is why spinal teams repeat the examination, often at 72 hours and again later, before confirming the classification. The first label is not always the final one, so rehabilitation should begin as early as it is safe to do so.
Full recovery from a complete spinal cord injury is rare, but meaningful recovery is common. Most neurological change happens in the first 6 to 12 months, and many people regain movement or sensation one or two levels below where the injury was first recorded. A small proportion of injuries first classed as complete later become incomplete.
Those levels matter. For someone with a neck injury, a single segment can be the difference between a powered and a manual wheelchair, or between needing help to eat and feeding yourself.
Neurological recovery is the return of movement or sensation as the cord settles, and it usually slows after the first year. Functional recovery is what you can actually do, from transferring and dressing to driving and working, and it keeps improving for years with the right training, technique and equipment. This is where specialist rehabilitation makes its biggest impact.
Recovery usually moves through three stages. Acute care in the first weeks focuses on stabilising the spine and protecting breathing and circulation. Inpatient rehabilitation in an NHS spinal injuries centre typically follows for around three to nine months, building sitting balance, transfers, wheelchair skills and bladder and bowel routines. After discharge, community rehabilitation continues building strength, fitness and independence, and this stage is often where the gains that change daily life most are made.
Independent walking is unlikely after a complete injury, and you deserve an honest answer. However, standing and supported stepping are often possible using standing frames, functional electrical stimulation (FES) and robotic gait trainers. These protect bone density, circulation, bladder and bowel function and mood, and help reduce spasticity.
There is currently no treatment that repairs a damaged spinal cord, so complete spinal cord injury treatment aims first to prevent further damage, then to maximise function, independence and health for life.
The spine is immobilised straight away, and surgery is often needed to relieve pressure on the cord and stabilise the spine. Many people spend time in intensive care before moving to one of the UK's specialist NHS spinal cord injury centres.
Bed rest is no longer the mainstay of care. Modern management keeps people as active as safely possible through specialist neurological physiotherapy, alongside spasticity and pain management, bladder and bowel programmes, pressure care, bone and heart health, and psychological support for the person and their family.
Spinal cord stimulation, delivered over the cord or through the skin, has helped some people with complete injuries produce voluntary movement during stimulation in research settings, and stem cell therapies are being studied. These remain largely experimental, but the people who benefit most are those who have kept their muscles, joints and fitness in the best possible condition. Consistent rehabilitation keeps those future options open.
Specialist neurological physiotherapy, delivered intensively and for as long as it is genuinely needed, is the foundation of rehabilitation after a complete spinal cord injury. As one of the leading providers of spinal cord injury rehabilitation in the West Midlands, CN Rehab combines expert hands-on therapy with advanced rehabilitation technology. We support people leaving an NHS spinal injuries centre and people many years post-injury who want to become stronger, fitter and more independent.
Every programme starts with a detailed assessment of your strength, movement, sitting balance, transfers, breathing, spasticity, skin and daily routines. Most importantly, we listen to what matters to you, and set clear goals together, whether that is transferring into a car independently, returning to work or living with less pain and fatigue.
After a complete injury, every working muscle has to do more. Our programmes build upper body and shoulder strength, sitting balance, transfers and wheelchair skills, alongside cardiovascular fitness. For people with tetraplegia, we also focus on hand and arm function, including grip training, and on respiratory physiotherapy to strengthen breathing and cough.
Functional electrical stimulation (FES) uses small electrical pulses to make paralysed muscles contract. FES cycling and exercise help maintain muscle bulk, circulation and bone health, reduce spasticity and give a genuine cardiovascular workout. Where there is any muscle activity, our Stella-Bio EMG-triggered FES system detects and rewards your own effort.
Our LEXO robotic gait trainer [LINK: LEXO page] provides supported, upright stepping, while Luna robotic EMG delivers precise, guided movement training, and the AlterG anti-gravity treadmill supports body-weight assisted training for lower-level injuries. We are always honest about what technology can do: after a complete injury, its greatest value is protecting your health and giving you exercise and upright time that are hard to achieve any other way.
Staying well is part of rehabilitation. We provide stretching and positioning programmes for spasticity, advice on pressure care and posture, and treatment for shoulder pain from wheelchair use. We also make sure you and your family recognise the warning signs of autonomic dysreflexia, explained in our tetraplegia guide.
Ready to take the next step? Book a specialist assessment and find out how our complete spinal cord injury rehabilitation programme can help you.
You can start specialist rehabilitation at CN Rehab without a referral and without joining a waiting list. NHS spinal injuries centres provide excellent care, but inpatient stays have to end, and community physiotherapy after discharge is often short-term and infrequent, which is exactly when progress can stall. Private specialist spinal cord injury rehabilitation lets you begin sooner, train at the intensity your goals need and continue for as long as you are benefiting. We work alongside your NHS team, GP and case manager to keep your care joined up. Arrange your assessment with CN Rehab.
A complete spinal cord injury changes life, but it does not stop a full and active one. Many people return to work, driving, travel, parenting and sport with the help of adapted equipment and good support. Regular exercise, annual spinal centre reviews, careful skin and bladder care and attention to mental wellbeing all protect long-term health. Charities such as the Spinal Injuries Association and Back Up offer valuable peer support for people and families.
A complete spinal cord injury is life-changing, but with expert support, the future can hold far more than you might expect. Our specialist team in Stourbridge, West Midlands, is here to help you get stronger, stay healthy and live as independently as possible.
Book your specialist spinal cord injury assessment today or give us a call 01384 476 028
Independent walking is unlikely, but many people can stand and take supported steps using standing frames, FES and robotic gait trainers, which benefits bone, heart, bladder and bowel health.
The spinal cord cannot currently be repaired, but many people regain movement or sensation one or two levels below the original injury, and function can keep improving for years with rehabilitation.
Most neurological recovery happens in the first 6 to 12 months. Functional gains in strength, skills and independence can continue for many years.
ASIA A is complete, with no sensation or movement at S4 to S5. ASIA B is sensory incomplete: some sensation is preserved below the injury, but no voluntary movement.
Shoulder movement and elbow bending usually remain, but the wrists, hands, trunk and legs are affected. Breathing is weaker, and most people use a powered wheelchair.
The arms, hands and most trunk muscles work, but the legs, bladder, bowel and sexual function are affected. Most people become independent manual wheelchair users.
Occasionally, yes. Spinal shock can make an injury look complete in the first weeks, and it may be reclassified as incomplete once it settles.
No. You can contact CN Rehab directly to arrange an assessment for spinal cord injury rehabilitation, and we will work alongside your NHS team.