Put up-stroke mobility rehab will get extra personalised with new wearable robotic


Researchers from Hong Kong have provide you with a brand new robotic system for enhancing the gait and decrease limb perform of stroke sufferers.


The cell ankle-foot exoneuromusculoskeleton developed by a analysis staff from Hong Kong Polytechnic College (PolyU) is a rehabilitation robotic particularly designed for stroke sufferers with hemiplegia, or paralysis that impacts one aspect of the physique. These sufferers typically have weakened muscle power and discoordination at their affected decrease limb.

The system routinely detects varied strolling varieties, reminiscent of standing, heel strike, heel off and toe off. It options a number of modes: the exoskeleton and comfortable pneumatic muscle groups present mechanical assist to let sufferers stand stably on their affected foot, whereas the vibration tactile suggestions and neuromuscular electrical stimulation assist them study to steadiness the plantar strain and exert propelling power when strolling.

Additionally via neuromuscular electrical stimulation, it might help successfully right foot drop and foot inversion.

The cell exoneuromusculoskeleton runs on a nine-volt rechargeable battery and can be utilized constantly for 4 hours.

Powered by Web of Issues (IoT) expertise, the system allows sufferers’ rehabilitation progress to be recorded on a companion cell app. It has near-real-time monitoring and progress analysis options, in addition to gives personalised steering and reminders that permit sufferers to undertake rehabilitation workout routines on their very own, whether or not at residence or outdoor. 

The IoT-enabled system additionally makes telerehabilitation attainable so therapists can remotely monitor the progress of not only one, however a number of sufferers in a single platform. Furthermore, the companion cell app can match completely different sufferers with each other to foster mutual assist and companionship. 

Thus far primarily based on medical research with a number of unidentified accomplice hospitals round China, the PolyU staff’s ankle-foot system is 40% more practical for stroke rehabilitation than making use of exterior mechanical forces alone. Following a 1.5-month coaching programme, it was discovered that the system helped enhance the dorsiflexion of the ankle (or the flexibility to tug the foot in direction of the knee) of 12 taking part sufferers from 5 levels to 10 levels with out tools help.

The research additionally famous that over 90% of members corrected their foot inversion efficiently. 


Hong Kong data round 50,000 new stroke instances annually with 85% of sufferers experiencing some type of impaired bodily mobility, reminiscent of foot drop and inversion, which disrupt their day by day lives.

In accordance with PolyU, to alleviate the danger of getting disabled, “[r]egular, repeated and intensive rehabilitation coaching is important for restoring the bodily mobility of stroke sufferers.” 

Nevertheless, sufferers are discovering it tough to entry daytime outpatient rehabilitation providers as native hospitals and clinics are getting overwhelmed with demand. This predicament leaves them unable to do well timed and routine rehabilitation workout routines. 

The answer by PolyU’s staff might help enhance sufferers’ gait and steadiness whereas strolling, right foot drop and inversion, and even contribute to rehabilitative neuroplasticity in the long term.


PolyU talked about how present exoskeleton lower-limb robots available in the market solely depend on exterior power to help stroke sufferers in strolling. “They’re of very restricted worth in enhancing ankle joint and muscle coordination for stroke sufferers with hemiplegia,” it claimed. Furthermore, these units are generally heavy and power-intensive so their use is proscribed solely in hospitals and rehabilitation clinics. In the meantime, typical ankle-foot orthoses could cause muscle atrophy and intrude with sufferers’ progress in regaining voluntary motor management of their affected ankles. 

The analysis staff at PolyU is now planning to commercialise their invention subsequent yr. Native startup Thecon Expertise, which was co-founded by the staff’s lead Dr Hu Xiaoling, additionally marketed final yr the same cell exoneuromusculoskeleton for higher limb rehabilitation referred to as Mobilexo Arm. Its growth on the college was first announced in 2018.


“This analysis achievement gives stroke sufferers a greater choice for decrease limb rehabilitation coaching, incorporating the coaching into their day by day actions. It additionally allows therapists to supply tele-supervision of the rehabilitation progress of a number of sufferers. We hope such versatile self-help coaching can successfully complement conventional outpatient rehabilitation providers, serving to stroke sufferers obtain extra environment friendly rehabilitation progress,” mentioned Dr Hu Xiaoling, affiliate professor of the Division of Biomedical Engineering at PolyU.

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