Augmented virtual reality therapy

Sensors track hand, arm and shoulder movement and drive tasks on screen, with immediate visual and audio feedback on whether the movement was correct. The system records every repetition — range, speed, accuracy — so the session produces data rather than an impression.

The reason this matters is dose. Motor learning after neurological injury requires very high repetition counts, and the limiting factor in practice is almost always attention and boredom rather than physical capacity. A patient who stops a conventional exercise early will often complete far more repetitions inside a task they are engaged in.

Upper limb rehabilitation after stroke, brain injury and multiple sclerosis. Parkinson's disease. Hand and wrist injury and post-surgical rehabilitation. Cerebral palsy and developmental motor delay in children, where engagement is the single biggest determinant of dose achieved.

Also for cognitive components — attention, sequencing, dual-task performance — trained alongside the movement rather than separately.

Improvement inside a virtual task does not automatically transfer to real objects. Transfer has to be trained deliberately, with real cups, real buttons and real doors, and a programme built only on screen work produces patients who are good at the screen.

We use it for volume and engagement, paired with task practice using actual objects. That pairing is the intervention; the headset alone is not.

The value of virtual reality in rehabilitation is that it allows practice of situations that are difficult or unsafe to arrange — crossing a road, a busy supermarket, a kitchen with distractions — with the difficulty controlled precisely.

What it does not do on its own is transfer to daily life. Tasks are chosen to resemble what the person actually needs to do, and real-world practice runs alongside.

The main evidence comes from a Cochrane review of 190 randomised trials in people after stroke 1. Used instead of the same amount of conventional therapy, virtual reality may improve arm function slightly, and the certainty of that evidence is low 1. Added on top of usual therapy, so that the patient trains for longer overall, it probably improves arm function more, with moderate-certainty evidence 1. In both comparisons it probably reduces limitations in everyday activities slightly 1.

Balance may improve slightly, the effect on walking speed is very uncertain, and there may be little or no effect on participation in daily life or on quality of life 1. Side effects reported in the trials were few and mild 1. The practical reading is that virtual reality earns its place by adding practice time and holding engagement, not by replacing hands-on therapy.