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City of Southside Place Trampoline Park Injury Attorneys Attorney911 of Houston TX Lead Ralph Manginello 25+ Years Experience Defeating Sky Zone and Urban Air Waivers via Former Defense Attorney Insider Lupe Peña Cosmic Jump $11.485M Harris County Verdict and Damion Collins $15.6M UATP Management Arbitration Experts Pediatric TBI Spinal Cord SCIWORA Salter-Harris Growth Plate and Rhabdomyolysis Litigation Mastery ASTM F2970 and EN ISO 23659:2022 and AAP Policy Standards Backyard Jumpking Skywalker Springfree Manufacturer Defect Specialists Attacking Waivers with Delfingen and Tex Fam Code 153.073 Authority Serving City of Southside Place Families with Multi-Million Dollar Pediatric Life Care Plans Free Consultation Hablamos Español 1-888-ATTY-911 No Fee Unless We Win

April 26, 2026 16 min read
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In the City of Southside Place, a Saturday afternoon often means heading toward the West Loop or down US-59 to one of the dozens of high-intensity trampoline parks that saturate the Houston metro. You take your children there because it is advertised as “safe family fun,” a controlled environment where the energy of a weekend can be burned off in a padded arena. But for families in the City of Southside Place, the transition from a birthday party to a pediatric trauma bay at Texas Children’s Hospital can happen in less than two seconds. One minute, you are watching from the rail; the next, you hear what Kati Hill described to ABC News as “the worst scream that you could ever have heard from a child.”

What many operators in the City of Southside Place area won’t tell you is that their business model relies on you believing a myth: that the waiver you signed at the kiosk ended your legal rights before your child even touched the mat. At Attorney911, we have spent 25 years dismantling that myth. Led by Ralph Manginello, our firm brings over two decades of trial experience in federal and state courts to the fight against the multi-billion-dollar conglomerates that own brands like Sky Zone, Urban Air, Altitude, and DEFY. We don’t just “handle” personal injury cases; we build architectures of accountability against corporate giants, from the BP Texas City refinery litigation to our current $10 million lawsuit against the University of Houston involving rhabdomyolysis and acute kidney failure.

We know the City of Southside Place, we know the Harris County jury pool, and we know that a trampoline injury is never just an accident—it is the predictable output of a system that puts profit margins ahead of child safety.

The Harris County Benchmark: Cosmic Jump and the $11.485 Million Verdict

If you are a parent in the City of Southside Place feeling the weight of a signed waiver, you need to know about Max Menchaca and the operator of Cosmic Jump in northwest Houston. Max was a sixteen-year-old on his first day of summer vacation when he fell through a tear in a trampoline slide. He didn’t land on another cushion; he fell five feet onto an unpadded concrete floor. The result was a fractured skull and secondary seizures from a traumatic brain injury.

The park’s defense was the same one you are likely hearing today: “He signed a waiver. He assumed the risk.” A Harris County jury disagreed. They found the operator grossly negligent—proving that the park had actual, subjective awareness of the torn equipment and showed a conscious indifference to the safety of its guests. The jury returned a verdict of $11.485 million, including $6 million in punitive damages.

This is the largest reported jury verdict against a commercial trampoline park in U.S. history, and it happened right here in our backyard. It proves that in the City of Southside Place, a piece of paper is not a shield for recklessness. When a park in the City of Southside Place area chooses to operate with torn mats, understaffed courts, or compacted foam pits, they are not protected by a waiver. They are exposed to the full weight of Texas law.

The Physics of a Catastrophe: Why Your Child Was Launched

Most parents in the City of Southside Place are told that trampolines are dangerous because of “inherent risks.” This is a defense-lawyer term designed to make you feel guilty for letting your child jump. The truth is that the most catastrophic injuries in the City of Southside Place don’t come from inherent risks; they come from the violation of the laws of physics that the industry’s own standards were written to prevent.

The Double-Bounce Energy Transfer

The most common mechanism of injury we see at parks near the City of Southside Place is the double-bounce. It happens when a heavier jumper—often an adult or an older teenager—lands on the same trampoline bed at the exact moment a smaller child is pushing off. In that instant, the bed acts as a catapult. The energy from the 200-pound adult transfers into the 50-pound child from the City of Southside Place, multiplying the child’s launch force by up to four times.

The child isn’t jumping anymore; they are being thrown at a velocity their developing musculoskeletal system cannot handle. This is why ASTM F2970, the safety standard the industry wrote about itself, requires parks to strictly enforce age and weight separation. When you see a “Toddler Time” session in a park near the City of Southside Place where 12-year-olds are permitted to jump alongside 4-year-olds, you are witnessing a violation of the standard of care in real-time.

The Foam Pit Illusion

If your child was injured in a foam pit at a park serving the City of Southside Place, you likely thought they were landing on a cloud. The medical reality is different. Foam pits are the highest-catastrophe attraction in the industry. As Eager’s 2012 biomechanical research demonstrated, foam cubes apply uneven friction to a jumper’s body. If a child enters head-first, the head can wedge between cubes while the body’s momentum continues, causing cervical hyperflexion or axial compression.

This is the mechanism that paralyzed Damion Collins in a $15.6 million Kansas case and killed Ty Thomasson in Phoenix when his foam pit was only 2 feet, 8 inches deep. The move toward pressurized airbags by chains like Sky Zone and Urban Air is a silent admission that foam pits were never safe. A park in the City of Southside Place area that still operates a compacted, unmaintained foam pit is operating a trap, not an attraction.

Staffing Gaps: Who Was Watching from the Rail?

When we investigate a case for a family in the City of Southside Place, we focus heavily on the court monitors. In the typical park near the City of Southside Place, the person responsible for your child’s life is a 17-year-old making near minimum wage with perhaps three hours of orientation training.

ASTM F2970 is explicit about attendant-to-jumper ratios, yet during a Saturday afternoon rush at a park serving the City of Southside Place, those ratios often collapse. We have seen surveillance footage where the monitor is on their phone, chatting with a coworker, or looking at an entirely different court while a developing injury unfolds.

We look for the “Don’t Call 911” protocol. As documented in a Southlake, Texas Tripadvisor review, parents have reported that management specifically instructs employees not to call 911 and to downplay injuries to avoid creating a record. This isn’t just bad service; it is a systemic effort to protect the corporate parent—Sky Zone, Inc., owned by Palladium Equity Partners, or Urban Air’s parent Unleashed Brands, owned by Seidler Equity Partners—at the expense of your child’s recovery.

The Medical Reality: Specificity That Matters

We don’t just talk about “broken bones.” In the City of Southside Place, we speak the language of the trauma bay because the medicine drives the damages. If your child’s injury was at a park in Harris County, we work with pediatric specialists to document the full scope of the harm.

  • Salter-Harris Fractures: A fracture through the growth plate in a child from the City of Southside Place is a ticking clock. It requires years of monitoring through skeletal maturity. If that growth plate is destroyed at age nine, the bone may never grow straight, leading to a lifetime of corrective osteotomies.
  • SCIWORA (Spinal Cord Injury Without Radiographic Abnormality): In the City of Southside Place, we know that a “clear” CT scan in the ER doesn’t mean your child is safe. Pediatric spines are pliable; the cord can be stretched and damaged even when the bones look normal on film.
  • Exertional Rhabdomyolysis: This is where our $10 million UH hazing case meets our trampoline practice. A child jumping continuously for 90 minutes in a hot indoor park near the City of Southside Place without hydration can experience muscle cell rupture. If your child had “cola-colored” urine or listlessness 24 hours after a jump session, they were likely in acute kidney failure. We know how to litigate the myoglobin cascade and the institutional failure to provide hydration.

Learn more about brain injuries in our video guide: “The Ultimate Guide to Brain Injury Lawsuits” at https://www.youtube.com/watch?v=GBYAHi5aiEQ.

The Waiver Architecture: Why It Fails in Texas

Texas is often seen as a “tough” state for plaintiffs because we generally enforce waivers. But as Ralph Manginello and Lupe Peña will tell you, a Texas waiver is only as strong as its compliance with the “Fair Notice” doctrine. Since 1993, the Texas Supreme Court’s ruling in Dresser Industries v. Page Petroleum has required that any release of future negligence be:

  1. Express: It must use the specific word “negligence.”
  2. Conspicuous: The language must be in bold, all-caps, or a contrasting color that would attract the attention of a reasonable person.

Most kiosk waivers at parks serving the City of Southside Place fail this test. They are buried in 20 screens of click-through text. Furthermore, the landmark case Munoz v. II Jaz, Inc. (14th Dist. Houston) established that a parent in Texas cannot waive a minor’s personal injury claim. While the recent 2025 Cerna v. Pearland Urban Air decision gave parks a win on arbitration delegation, it did not extinguish the underlying liability.

If your family’s primary language is Spanish, and you were handed an English-only iPad at a park near the City of Southside Place, the Delfingen doctrine may invalidate the waiver entirely for lack of meaningful assent. Con Lupe Peña, nuestro equipo habla su idioma y protege sus derechos sin necesidad de intérpretes.

The Evidence Clock: Why 7 Days Is the Deadline

By the time you get your child home to the City of Southside Place from the hospital, the evidence is already disappearing. Trampoline park DVR systems in the Harris County area typically overwrite in as little as 7 to 30 days. The waiver kiosk version you signed might purge on a 72-hour cycle. The monitor who wasn’t watching may be at a different job within a month.

Our spoliation procedures are built for speed. Within 24 hours of your call from the City of Southside Place, we send a certified preservation demand to the park, the franchisor (like UATP Management or Sky Zone Franchising LLC), and the corporate parent. We demand the native video files, the metadata of the incident report, and the individual training files of every employee on shift.

If you’ve had an accident, watch our guide on what to do first: “I’ve Had an Accident — What Should I Do First?” at https://www.youtube.com/watch?v=OCox4Lq7zBM.

Why Choose Us for Your City of Southside Place Case?

Choosing a lawyer in the City of Southside Place area for a trampoline case is not about finding someone who handles “personal injury.” It is about finding someone who knows the industry playbook. Our associate attorney, Lupe Peña, used to work for the insurance companies that defend these parks. He knows how they train their adjusters to offer you the “Med-Pay” check—a $3,000 to $5,000 payment that often requires you to sign away a multi-million-dollar claim. He knows the names of the defense doctors who write the boilerplate reports. He spent years building their walls; now he knows exactly where the cracks are.

We’ve gone toe-to-toe with the world’s largest corporations, from BP to Walmart and Amazon. The PE-backed conglomerates behind your local trampoline park don’t intimidate us. We advance every expense—the biomechanical engineer who will reconstruct the double-bounce, the pediatric orthopedic consultant, and the life-care planner who will project your child’s needs for the next 50 years.

You signed the waiver because you wanted your child to have fun. You are not responsible for the park’s decision to understaff their floor or defer maintenance on their foam pits. The guilt belongs to the corporate headquarters in Grapevine, Fort Worth, or Provo—not you.

1-888-ATTY-911. Our offices on the West Loop and Dunlavy are minutes from the City of Southside Place. We answer 24/7. No fee unless we win. Your child’s recovery fund stays intact. The case starts today.

Frequently Asked Questions for City of Southside Place Families

What should I do if my child got hurt at a Sky Zone in City of Southside Place?
Your first priority is medical care at a specialized pediatric trauma center like Texas Children’s. Do not wait for the park to call 911; if they hesitate, make the call yourself. After your child is stable, take photos of the injury and the specific court where it happened. Do not give a recorded statement to any park manager or insurance adjuster. Call us immediately so we can freeze the surveillance video before it is overwritten.

How long do I have to sue a trampoline park in Texas?
In Texas, the statute of limitations is generally two years. However, for a minor in the City of Southside Place, that clock is “tolled” until they turn 18, meaning they have until their 20th birthday to file. Do not wait. While the legal deadline is years away, the evidence deadline is days away. Surveillance footage, witness memories, and maintenance logs disappear long before the statute of limitations runs.

Can I sue Urban Air if I signed a waiver?
Yes. In the Houston area, including the City of Southside Place, waivers are routinely challenged. Under the Munoz doctrine, your signature likely cannot waive your child’s direct claim. Additionally, under the Dresser doctrine, if the waiver was not conspicuous or did not explicitly mention “negligence,” it may be invalid even for your own claims. Cases like Cosmic Jump prove that gross negligence—like knowingly leaving a torn mat in service—defeats any waiver in a Texas courtroom.

How much is my child’s case worth?
The value of a case depends on the severity of the injury and the depth of the insurance tower. Catastrophic spinal injuries can reach $10 million to $15 million in life-care planning costs alone. Compound fractures with growth plate involvement often anchor in the $500,000 to $2 million range. We look beyond the primary $1M policy to access umbrella and excess layers held by franchisors and corporate parents like Palladium Equity or Seidler Equity.

Is the foam pit at the trampoline park really safe for my kid?
National medical data suggests that foam pits are one of the highest-risk attractions. If the foam is compacted or the pit hasn’t been “fluffed” per ASTM F2970 standards, the landing surface is essentially a hard floor. This is why many parks in the Harris County area are switching to airbags, which provide more uniform deceleration. If your child was hurt in an old-style foam pit in the City of Southside Place area, we will investigate the maintenance logs to see if that pit was below depth specifications.

What happens if the trampoline park’s surveillance video is missing?
When a park tells us the video is “missing” or “glitched,” we deploy digital forensic experts. A Georgia jury recently awarded $3.5 million in the Mathew Knight case when four camera angles simultaneously “failed” at the moment of injury. In the City of Southside Place, if a park destroys evidence after we have sent a preservation demand, we move for an adverse inference instruction, which tells the jury to assume the video would have proven the park was negligent.

Should I let the trampoline park’s insurance company pay my hospital bill?
Be very careful. This is often an offer of “Med-Pay” coverage. While it looks like a goodwill gesture, these checks often come with a release of all future claims printed on the back or enclosed in the fine print. If you accept $3,000 now for an ER bill, you could be giving up $1,000,000 for the corrective surgeries your child will need at age 14. Never sign anything or deposit a check from the park’s insurer without an attorney review.

Why does my child still have headaches after the trampoline accident?
A headache after any impact is a sign of a concussion or TBI. Pediatric brains are still developing, and the damage from a “mild” concussion at a park near the City of Southside Place may not fully manifest for months. We help families secure neuropsychological testing to ensure that cognitive deficits aren’t missed during the initial recovery phase.

What’s the difference between the trampoline park and the franchisor?
The park you visit near the City of Southside Place is likely a single-location LLC (the franchisee). The franchisor (like Urban Air Franchise Holdings) provides the rules and branding. Under the Sampson doctrine in Texas, we can often hold the franchisor liable for apparent agency or for their own direct negligence in failing to audit the safety of their local parks. This is critical because the franchisor typically has a much larger insurance policy than the local LLC.

When should I call a lawyer about my child’s trampoline injury?
Call within the first week. The consultation is free, and we can immediately send the spoliation letters that save the surveillance video. We represent families throughout the City of Southside Place and the Houston metro on a contingency-fee basis—you pay nothing unless we recover money for your child.

1-888-ATTY-911. Call us now. Protecting your child’s future starts with preserving the truth of what happened today.

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