You've been to three appointments in the last month. The orthopedist mentioned Botox. The neurologist brought up selective dorsal rhizotomy. The orthotist fitted your child for new braces. Each specialist was confident. None of them acknowledged what the others said.

You're left trying to piece together which treatment your child needs, whether these options work together or replace each other, and why no one is giving you the full picture.

Here's the framework you needed three appointments ago.

The Three Primary Approaches

Spasticity management in cerebral palsy isn't one-size-fits-all. The treatment that works depends on which muscles are affected, how severe the tightness is, and what your child is trying to do functionally. Botox, selective dorsal rhizotomy (SDR), and orthotics address spasticity at different points in the body's system.

Botox injections temporarily block nerve signals to specific muscles, reducing tightness for 3-4 months at a time. They're targeted and reversible.

Selective dorsal rhizotomy (SDR) is spinal surgery that permanently reduces nerve signals causing spasticity in the legs. It's one-time, irreversible, and affects tone throughout the lower body.

Orthotic bracing doesn't reduce spasticity at all. It positions the limb to work around tight muscles, preventing contractures and supporting function while other treatments address the underlying tone.

Most children with moderate to severe spasticity use more than one of these approaches rather than choosing between them.

When Botox Makes Sense

When a specialist first mentions Botox, parents often assume it means they're starting over, but Botox is where many families begin, and for good reason: it's targeted, it's temporary, and it gives you information before you commit to anything more permanent.

The injections work by temporarily quieting specific overactive muscles, blocking the nerve signals that keep them too tight. Effects show up within a week, peak at 4-6 weeks, and wear off by 12-16 weeks. That window is the whole point. Your child's physical therapist works intensively during it, because when tight hamstrings or calves finally relax, your child can practice movements that were previously blocked. The goal isn't just less tightness: it's whether that window allows your child to build strength and motor patterns that carry forward after the Botox wears off.

If it works, you've learned something important: reducing tone in those muscles helps function. If it works but wears off, you'll do it again; some families manage this cycle for years, and that's a reasonable path. If it doesn't help, you've also learned something important, and the treatment plan shifts.

Botox isn't the right tool when spasticity affects the whole body rather than specific muscle groups, or when tone is so high that temporary reduction doesn't create enough change to build on. When families feel like they've been treading water with injections every few months without meaningful progress, that's often when SDR enters the conversation.

When SDR Is Considered

Selective dorsal rhizotomy sits in a different category from Botox: it's a major spinal surgery, permanent, with a recovery that takes well over a year. Understanding what it offers, and who it helps, makes it less frightening.

SDR works by permanently cutting specific sensory nerve rootlets in the lower spine that are generating the constant spastic signals to the leg muscles. The result is a lasting reduction in tone throughout the lower body. For families who've spent years managing high tone with ongoing Botox, daily stretching routines, and bracing, SDR can remove that maintenance burden and open new possibilities for movement.

If you've been in SDR evaluation conversations, the candidacy criteria can feel like another door to get through. What the program is looking for is straightforward: a child whose movement limitations come primarily from spasticity, not weakness or motor planning challenges. Most programs use GMFCS II or III as the starting point (meaning the child can walk with assistance or with limited independence) and want to see underlying strength beneath the tight muscles. Spasticity and dystonia look similar to a parent but behave very differently, and SDR only addresses spasticity. If your child's main challenge is dystonia, ataxia, or weakness rather than tone, the surgery won't deliver what you're hoping for.

The tradeoff is significant. Physical therapy after SDR is intensive: several weeks of inpatient rehab followed by months of outpatient PT. The surgery reduces spasticity, but the strength your child builds afterward, and the motor patterns they learn to use with less-tight muscles, come from months of dedicated therapy. Families who go into SDR expecting to be done in six months often feel blindsided. Families who go in expecting a hard 12-18 months of rebuilding, and are prepared to support that, often describe it as a turning point.

SDR also isn't a cure. Children who walk before SDR typically walk better after. Children who don't walk before SDR typically don't walk after, though they often have less pain, better positioning, and easier care routines. What SDR offers is a meaningful, permanent reduction in one specific barrier. Whether that's the right trade for your child is a question only your family can answer.

Where Orthotics Fit

Braces do something different from Botox and SDR: they don't reduce spasticity at all. They hold joints in better position while spastic muscles pull the other direction.

An ankle-foot orthosis (AFO) keeps the foot at a neutral angle instead of pointed down, which prevents the Achilles tendon from shortening and gives your child a more stable base for standing and walking. Night braces hold muscles in a lengthened position to prevent contractures during sleep. They're not glamorous interventions, but the protection they provide over years is real.

What makes orthotics work well is pairing them with treatments that address the underlying tone. If your child gets Botox in the calf muscles, wearing AFOs through that 3-4 month window maintains the lengthened position and makes the functional gains more durable. After SDR, many children continue wearing braces because reduced tone doesn't mean the joints are suddenly stable, especially while muscles are rebuilding strength. The braces hold the gains while your child's body catches up.

If a specialist recommends bracing without connecting it to anything else in your child's plan, it's worth asking where it fits. Orthotics are part of a larger picture. They compensate for a problem they can't solve on their own, and they work best when the plan reflects that.

How These Treatments Work Together

Most treatment plans layer these approaches rather than choosing one. A child with tight calf muscles and mild hamstring spasticity might start with Botox in the calves, wear AFOs, and work with a PT on strengthening and gait training. If the pattern repeats every few months (Botox helps but wears off, and tone is limiting progress between injections), SDR becomes a consideration.

After SDR, the same child will likely still need AFOs because the surgery reduced tone but didn't change the underlying motor control challenges. The braces now work better because the muscles aren't fighting them as hard.

The decision sequence matters. Botox is temporary and targeted, which makes it the lowest-risk place to start when you're trying to figure out whether reducing tone in specific muscles will improve function. SDR is permanent and system-wide, which makes sense when you already know spasticity is the primary barrier and temporary reduction hasn't been enough.

Your child's functional goals drive the timeline. If they're 4 years old and learning to walk, you might trial Botox while their motor system is still developing. If they're 7 and have plateaued because spasticity is limiting every movement, SDR might be the next step. If they're a teenager managing pain from chronic tightness, reducing tone can improve quality of life even if it doesn't change mobility.

What to Ask Each Specialist

When a specialist recommends Botox, ask: Which muscles are you targeting? What function are we trying to improve during the 3-4 month window? What happens if it works but wears off?

When SDR is mentioned, ask: Where does my child fall on the GMFCS? What percentage of their movement limitation is from spasticity versus strength or motor planning? What does the rehab timeline look like, and can we manage that level of therapy?

When you're being fitted for new braces, ask: Are these meant to work with another treatment, or are they the primary intervention right now? How often will we need to refit as my child grows?

The answer to each question tells you whether the specialist is thinking about your child's whole picture or just the piece they treat. If the orthopedist suggests Botox without mentioning whether your child will still need braces, ask directly. If the neurosurgeon discusses SDR but doesn't explain what happens to orthotics post-surgery, bring it up.

You're not choosing between these treatments. They're tools in a larger plan. Your job is to understand when each one applies and how they fit together for your child.

FAQ

Can my child get Botox and SDR?

Yes. Some children have Botox injections before SDR to manage tone while they're deciding whether to pursue surgery. Others have Botox after SDR if they develop localized spasticity in muscles that weren't fully addressed by the nerve cuts. The two treatments target tone at different points in the nervous system and don't interfere with each other.

How do I know if my child is a candidate for SDR?

Most SDR programs evaluate children using the Gross Motor Function Classification System (GMFCS). Candidates are typically GMFCS II-III, meaning they can walk with assistance or with limitations, and have spasticity as their primary motor challenge rather than dystonia, ataxia, or weakness. Your neurologist or orthopedic surgeon can refer you for an SDR evaluation if they think your child might qualify.

Will my child still need physical therapy after Botox or SDR?

Yes. Both treatments reduce spasticity, but neither teaches the brain new motor patterns. PT during the post-Botox window and after SDR rehab is where functional gains happen. The therapy isn't optional; it's the piece that translates reduced tone into improved movement.

Do braces prevent my child from building muscle strength?

No. Adaptive equipment, including orthotics, supports function while your child is building strength. Braces hold joints in better alignment, which makes it easier to activate the right muscles during movement. Strengthening happens in PT, and braces are part of the support system that makes that work possible.

Can my child stop wearing braces after SDR?

Some can, but many still benefit from bracing post-surgery. SDR reduces spasticity but doesn't eliminate the motor control challenges that make joints less stable. Your child's PT and orthotist will reassess bracing needs as your child progresses through rehab. The goal is to use the least restrictive equipment that still supports function.

What if we've tried Botox and it didn't help?

Botox not working doesn't mean spasticity isn't the problem. It might mean the wrong muscles were targeted, the dose wasn't sufficient, or spasticity is too diffuse for localized injections to make a meaningful difference. That pattern of Botox being ineffective with tone still high and progress stalled is often what moves the SDR conversation forward. If Botox didn't help and your child's primary barrier is still spasticity, SDR may be a better fit. If Botox didn't help and the real issue is weakness or motor planning, the treatment plan needs to shift toward those targets instead.