Medical robotics beyond surgery: rehabilitation and care

Rehabilitation robots and exoskeletons

Some of the most established non-surgical medical robots are used in rehabilitation. Robotic devices can guide and support a limb through repeated movements, which is important because recovery after a stroke or spinal injury depends heavily on lots of practice. Wearable robotic exoskeletons — powered frames worn on the legs or arms — can help someone stand and step who otherwise could not, supporting intensive gait (walking) training. Other machines assist arm and hand exercises, gradually reducing their help as the person improves. The idea is not to replace the therapist but to allow more repetitions and more consistent movement than a person could deliver alone, freeing the therapist to focus on guidance, motivation and tailoring the programme to each patient.

Robots that assist therapy and mobility

Beyond intensive rehabilitation, robotic and powered devices help with everyday movement and independence. Powered wheelchairs and smart mobility aids have become more capable, and assistive robotic arms can be mounted on wheelchairs to help people with limited hand function pick up objects, eat or open doors. In hospitals and care homes, hoists and lifting aids — some now with robotic assistance — help staff move patients more safely, reducing back injuries among carers, one of the most common workplace health problems in healthcare. These technologies are less about high-tech novelty and more about a practical goal: helping people do more for themselves, and helping staff provide care with less physical strain and risk.

Social, care and companion robots

A different category of robot is designed to interact with people rather than move them. Social or companion robots, including well-known animal-like devices, are being trialled in dementia care and among isolated older people to provide comfort, prompt conversation and reduce agitation and loneliness. Others can remind people to take part in activities, support cognitive exercises, or act as a friendly interface for video calls with family and staff. Telepresence robots let a clinician or relative appear on a screen that can move around a room. These robots do not replace human contact, and are not meant to; the aim is to add support in settings where staff time is stretched, and to help people stay engaged, oriented and connected.

What the evidence shows

Enthusiasm for care and rehabilitation robots needs to be matched by evidence, and here the picture is mixed and still developing. For rehabilitation, studies suggest robot-assisted training can help recovery of walking and arm function for some patients, often working best alongside conventional therapy rather than instead of it, and the size of the benefit varies. For social and companion robots, some trials show reductions in agitation and improvements in mood and engagement, but studies are often small and short. Cost, practicality and whether benefits last are all real questions. The honest position is cautious optimism: robots are a promising tool in particular situations, but they are not a cure-all, and claims should be judged against good-quality trials rather than eye-catching demonstrations.

Practical and ethical questions

Bringing robots into care raises important questions beyond whether they work. There are worries about privacy, since many devices collect data or use cameras, and about consent, especially for people with dementia who may not fully understand what a robot is. There is a risk that robots could be used to replace human contact rather than add to it, which most experts and the public would find unacceptable in care. Safety, reliability, training staff, maintenance and cost all matter for real-world use. In the UK, medical robotic devices must meet regulatory standards for safety and performance. Handled thoughtfully — with robots supporting rather than substituting for human care, and with dignity and choice kept central — these technologies could genuinely help meet the rising demand for rehabilitation and care.