The AI landscape doesn't move in one direction — it lurches. Some techniques leap from experiment to table stakes in a single quarter; others stall against regulatory walls, technical ceilings, or organisational inertia that no amount of hype can dislodge. Knowing which is which is the hard part. The State of Play cuts through the noise with a rigorously maintained index of AI techniques across every major business domain — classified by maturity, evidenced by real-world adoption, and updated daily so you always know where you stand relative to the field. Stop guessing. Start knowing.
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AI-controlled rehabilitation robots, assistive devices, prosthetics, and exoskeletons that adapt to user movement and intent. Includes neural-interface prosthetics and adaptive gait training; distinct from surgical robotics which operates in clinical rather than rehabilitative settings.
Rehabilitation, assistive, and prosthetic robotics has cleared every traditional gate to mainstream adoption -- regulatory approval across three regions, operational insurance reimbursement, and clinical evidence from multi-centre RCTs -- yet remains a leading-edge practice confined to well-resourced institutions and individually funded home users. The technology works: AI-controlled exoskeletons train gait in stroke and spinal cord injury patients (though meta-analysis evidence shows no superiority to conventional therapy for ambulatory function), neural-interface prosthetics decode motor intent with over 96% accuracy, and brain-computer interfaces are producing clinically meaningful results in chronic stroke recovery. China's regulatory approval of Neuracle Medical Technology's implantable BCI for hand movement (March 2026) marks the first commercial BCI clearance for prosthetic control, expanding the field beyond US institutions. Three major Medicare Advantage insurers now cover personal exoskeletons, reaching roughly 16 million beneficiaries, with Good Shepherd Rehabilitation achieving 500,000+ cumulative steps in Wandercraft Atalante X deployment. But the gap between regulatory clearance and real-world scale remains wide. Ekso Bionics, the category's largest institutional vendor with 400-plus facility deployments, posted a 29% revenue decline in 2025, a $11.7M net loss, and is exiting medical robotics through a merger with an AI infrastructure firm. By May 2026, Ekso's formal withdrawal formalized with SEC filing confirming business combination closing and shareholder dilution, consolidating evidence of market viability challenges despite technical capability. Leading exoskeleton researchers identified critical unverified claims in sim-to-real ML transfer research in 2026, highlighting persistent technical maturity gaps. The defining tension is not whether these systems deliver clinical value -- the evidence is strong -- but whether the economics, implementation complexity, and engineering claims can support deployment at scale beyond the vanguard.
The exoskeleton vendor landscape is fragmenting. Ekso Bionics reported $12.4M in 2025 revenue against an $11.7M net loss, issued a going-concern warning, and completed merger into AI infrastructure firm (ChronoScale Corporation) in May 2026—effectively exiting medical robotics despite holding 400+ facility deployments. Q1 2026 SEC filings (April 28) documented further deterioration: revenue $2.1M (YoY decline), net loss $6.9M, and explicit going-concern language citing cash runway only to early Q3 2026. Lifeward (formerly ReWalk) is moving in the opposite direction, commercialising the ReWalk 7 with cloud connectivity and acquiring Skelable's AI-powered upper-body exoskeleton for stroke rehabilitation. Wandercraft has deployed nearly 100 Atalante X units across the US, Europe, and Brazil, with Good Shepherd Rehabilitation (Philadelphia) reaching 500,000+ cumulative steps in 2026 (documented at ASIA 2026 conference with 13-year longitudinal safety data showing zero fractures in German cohort since 2018). Six FDA/CE-approved commercial exoskeletons remain on the market, but vendor economics remain precarious. Clinical partnerships are expanding: Lifeward partnered with Shirley Ryan AbilityLab (ranked #1 US rehabilitation hospital) in March 2026 to expand ReWalk Personal access and integration into clinical workflows.
Reimbursement has reached meaningful operational scale. Medicare set a $94,617 lump-sum payment for personal exoskeletons in January 2024; by April 2026, Aetna, Humana, and UnitedHealthcare together grant coverage to approximately 16 million Medicare Advantage beneficiaries, with payment processing under 30 days. An Administrative Law Judge ruling in June 2025 established legal precedent for medical necessity. These milestones converted coverage from policy aspiration to operational reality, yet adoption remains constrained by implementation barriers rather than access.
Brain-computer interfaces have reached a regulatory inflection point. China's National Medical Products Administration approved Neuracle Medical Technology's implantable BCI for hand movement control in March 2026—the world's first commercial BCI clearance for prosthetic function, validated across 32 patients at 11 Chinese hospitals including Fudan Huashan. May 2026 evidence consolidates BCI maturity: CorTec's Brain Interchange platform demonstrated dual capability (therapeutic cortical stimulation for stroke recovery plus thought-controlled computer use) on same implanted device in NIH-funded UW trial; BrainCo's non-invasive commercial prosthetics achieved cost parity (1/5 to 1/7 of Western devices) across 35+ countries with 2,000 units fitted in China and government policy reimbursement support; Paradromics gained IDE approval for BCI speech-restoration trial across multiple academic centers (UC Davis, MGH, U. Michigan). BrainGate typing neuroprosthesis achieved 110 characters/minute (22 words/minute) with 1.6% error rate in home-use trials, and a peer-reviewed meta-analysis of BCI-assisted stroke rehabilitation showed significant improvement in upper-limb motor function across 642 patients. Neural-interface prosthetics are advancing: machine-learning-driven RPNI control has achieved over 96% accuracy in real-time functional tasks, and osseointegrated mechanoneural prostheses have demonstrated improved walking and embodiment in clinical trials. However, these remain early-deployment achievements. Average device costs of $42,800 and documented user concerns about reliability, safety, and social acceptance keep adoption narrow. Critical assessment: A 2026 multicenter RCT showed exoskeleton-assisted gait training was NOT superior to conventional rehabilitation for primary ambulatory function outcomes, though secondary improvements in lower-limb strength were observed—challenging claims of broad therapeutic superiority. Soft exoskeleton RCTs (April-May 2026) confirm efficacy in Parkinson's (stride length +0.15m, ankle mobility improved) though evidence limited to pilot-stage designs. Leading exoskeleton researchers identified unverified claims in sim-to-real transfer research, with reported results violating physiological limits and algorithmic implementations unavailable for verification, indicating persistent maturity gaps in ML-driven control systems.
— Longitudinal real-world deployment data across 13 years and 97-patient German registry shows fracture rate declining to zero since 2018; presents at ASIA 2026 conference—demonstrates sustained institutional adoption with documented safety improvement trajectory.
— Ekso's Form 8-K documents strategic business combination with Applied Digital (effective May 5, 2026, closing at 3:02 AM ET), formalizing exit from medical exoskeleton business with ~97% shareholder dilution and company name change to ChronoScale Corporation.
— BrainCo's commercial non-invasive neural prosthetic deployment across 35+ countries with 2,000 units fitted in China; achieves cost parity (1/5 to 1/7 of Western devices), government reimbursement policy support, and sustained multi-country adoption—evidence of BCI commercialization at scale.
— CorTec's first participant in NIH-funded UW clinical trial demonstrates dual capability on same implanted wireless device: therapeutic cortical stimulation for stroke recovery AND thought-controlled computer use within 2 hours of training—validates assistive BCI maturity.
— Paradromics gains IDE approval for speech-restoration and computer-control BCI trial across UC Davis, MGH, U. Michigan; claims industry-leading 200+ bps capability—extends BCI assistive applications and regulatory pipeline for motor restoration.
— Ekso Q1 2026 SEC 10-Q shows revenue decline to $2.1M (YoY loss of $1.2M), widened net loss to $6.9M, and explicit going-concern warning with only $3.9M cash runway extending to early Q3 2026—critical negative signal revealing market viability constraints.
— Peer-reviewed RCT (n=56 PD patients) in JMIR with quantified clinical outcomes: stride length +0.15m (p<0.001), ankle dorsiflexion +2.84° (p<0.001), UPDRS motor improved 2.8 points—demonstrates soft exoskeleton efficacy in neurodegenerative gait rehabilitation.
— Mordor Intelligence projects 10.41% CAGR expansion to $5.94B by 2031, driven by reimbursement acceleration in US/Japan/Germany; notes payer adoption now paces growth faster than hardware innovation, FDA timelines compressed to <12 months, home-care CAGR 10.75%.