Spasticity after stroke

What spasticity actually is

Spasticity is increased muscle tone caused by loss of inhibitory signals from the brain. After stroke, the damaged motor pathways stop sending the "relax" signal, so muscles default to a contracted state. The arm curls in. The hand fists. The leg locks straight or scissors. The foot points down.

It usually emerges weeks to months after the stroke, peaks in the first year, and can persist or worsen without treatment. Untreated spasticity leads to contractures (permanent shortening of muscle and joint capsule) that are dramatically harder to reverse.

Why stretching alone fails

Stretching feels like the obvious treatment, but stretching alone rarely produces lasting change. The problem is upstream — in the brain — not in the muscle fiber. Stretch a spastic muscle, walk away, and within minutes the tone returns.

Effective treatment combines: medical management (botulinum toxin injections, oral baclofen in some cases), positional management (splinting and orthotics to maintain length), active movement training (forcing the brain to send relax signals), and strengthening of the opposing muscles.

Botulinum toxin (Botox) injections

For focal spasticity (one specific muscle group causing the problem), botulinum toxin injections are the gold standard. They temporarily weaken the spastic muscle, creating a 3–4 month window where rehabilitation can do its work.

Botox without rehab is half the treatment. Botox plus daily stretching, splinting, and active movement can produce long-lasting functional gains. The injection is the door — the rehab is the room you walk into.

Splinting and orthotics

Resting hand splints, ankle-foot orthoses (AFOs), and serial casting are tools to maintain muscle length and prevent contractures. They work best in combination with active treatment. A static splint without active practice is just slowing the deterioration; with active practice it is part of the treatment.

Active movement and the Sasquatch protocol

The most underused treatment is active movement of the spastic limb. Constraint-induced movement therapy (CIMT), task-specific repetitive practice, and electrical stimulation paired with active effort all force the brain to recruit residual motor pathways and reduce spasticity over time.

The Sasquatch Daily Routine includes spasticity-aware protocols: stretch, then activate, then strengthen the opposite (antagonist) muscles. Doing this daily for 12–16 weeks moves the needle in ways that no single intervention does in isolation.

Electrical stimulation at home: what the evidence says

Neuromuscular electrical stimulation (NMES) and functional electrical stimulation (FES) devices can significantly reduce spasticity when used consistently at home. They work by sending electrical pulses to the muscle that trigger a contraction — essentially mimicking the signal the brain is failing to send. Paired with active effort (trying to move the limb while the device stimulates), they are far more effective than passive stimulation alone.

Transcutaneous electrical nerve stimulation (TENS) units available over the counter target sensory nerves and can reduce tone temporarily — useful before stretching or therapy. True NMES devices require slightly more voltage and target motor nerves directly. Your PT or physiatrist can prescribe a trial with a clinical-grade device and help you interpret the response before you invest in a home unit.

The TENS units in the Recovery Store are a cost-effective starting point for at-home electrical stimulation. They do not replace clinical NMES but they are accessible, affordable, and supported by a reasonable evidence base for spasticity management.

• TENS: sensory stimulation, reduces tone temporarily, OTC accessible
• NMES: motor stimulation, directly activates muscle contraction, more effective for rehab
• FES: functional electrical stimulation, synchronizes with movement attempts
• Active effort during stimulation dramatically improves outcomes vs. passive use
• Use before stretching to pre-treat tone, or as a standalone session

What I did for my own spasticity

My left arm had significant flexor spasticity from month one. My OT fitted me with a resting hand splint immediately. I had Botox injections at month five into the bicep and forearm flexors — that created a three-month window where I could actually open my hand enough to grip objects.

The combination that worked: Botox every four months for the first two years, daily resting splint at night, aggressive stretching every morning before the splint came off, TENS before each stretching session to pre-treat the tone, and daily active movement practice that started with mirror therapy and progressed to task practice. By year three the Botox interval stretched to six months. By year five, I stopped needing it. My hand is not normal — but it is functional.

The lesson: spasticity is not a wall. It is a problem with a treatment pathway. Get a physiatrist involved early, because Botox combined with intensive rehab is dramatically more effective than Botox alone or rehab alone.