From assessment to home programme: how Pratik Visaria uses HeadX Kross and Duo for vestibular rehabilitation at Woodside Clinic
Richard Wheatley
At Woodside Clinic, vestibular rehabilitation patients leave their first appointment with something most clinics cannot offer: objective data about their own cervical function, a structured home exercise programme, and a device in their bag to work with.
Pratik Visaria has built that around HeadX Kross and HeadX Duo — two tools that work differently but sit in the same clinical pathway for patients with vestibular dysfunction and cervical proprioceptive deficits.
Assessment first
The Duo leads the clinical encounter. Pratik uses it to run objective cervical range of motion and joint position sense assessments — producing repeatable, numerical data rather than visual estimates or goniometric snapshots. For vestibular patients, where the relationship between gaze stabilisation, head position sense, and symptom provocation is rarely straightforward, that baseline is worth having. It gives clinician and patient something concrete to refer back to.
The Duo contains a nine-axis motion sensor — measuring acceleration, rotation, and magnetic orientation simultaneously — paired with algorithms developed specifically for fine-motion head tracking. Cervical movement is slow, small, and clinically meaningful at the margins. The sensor fusion and filtering inside the Duo was built around that problem from the ground up, not adapted from a general-purpose application. The result is angular displacement data across the six primary cervical movements at the resolution the clinical task actually requires. Joint position sense error comes from the return-to-neutral data. It is a starting point — not a replacement for clinical reasoning, but a grounding for it.
The home programme
Once assessment is complete, Pratik prescribes exercises from the HeadX library, directing patients to headx.co.uk.
The library covers gaze stabilisation, cervical proprioception training, and vestibulo-ocular reflex exercises — the core categories in the vestibular rehabilitation evidence base. Each exercise has a follow-along video: clean, distraction-free, no ambiguity about setup, target position, or movement tempo. The patient follows the screen. The Kross laser follows their head. The target does the rest.
This is where the loan model earns its keep. Vestibular home programmes often break down in the first fortnight — not through lack of effort, but because patients are not sure whether they are doing the exercise correctly. Video instruction answers the what. The Kross laser answers the how well. Together, they close a gap that written instructions alone rarely can.
Pratik sequences exercises based on what the Duo assessment showed, so patients are not working through a generic vestibular protocol. They are working on the specific movements where their data indicated a deficit.
The loan model
Patients borrow a Kross unit for the duration of their programme, typically three months, with the option to return it once they are discharged.
Almost none do. The majority go on to buy the unit directly from the clinic. Three months of daily use tends to answer the question of whether something is worth keeping.
Reassessment closes the loop
Patients return for check-ups and reassessment throughout. The Duo comes back out. Same protocol, same metrics. Changes in ROM and JPS error are tracked against the original numbers — measured directly, not inferred from symptom questionnaires alone.
For patients, that comparison is often the clearest account of their own progress they have seen. For the clinician, it is a documented, defensible record.
Two tools, one pathway
The Kross and Duo do different things. One assesses; the other rehabilitates. What Pratik has built at Woodside is a sequence in which both earn their place — objective measurement at the start and at review, guided home practice in between.
For many vestibular patients, it is a more structured and trackable programme than anything they have been offered before. That probably explains why so few return the device.