Montezum roller coaster at Hopi Hari triggers brain trauma

Prosecutors from the São Paulo Public Prosecutor’s Office are examining the circumstances surrounding an incident that caused severe motor impairments to visitor Júlia Bossoni on the Montezum roller coaster inside the Hopi Hari amusement park in Vinhedo. Additional patrons have reported sustaining bone fractures and spinal trauma from violent jolts and abrupt braking along the wooden track.

Júlia Bossoni and João Pedro departed from Londrina, located in the state of Paraná, to spend the day at the Vinhedo facility. Upon entering the venue gates, the pair secured an early position in the boarding queue for the attraction.

The structure stands as the largest wooden roller coaster in Latin America, having operated continuously since its official inauguration in 1999. Trains reach peak velocities of 103 km/h along a circuit measuring more than 1,000 meters in length while ascending to an elevation of approximately 42 meters.

Internal venue security cameras documented the couple taking seats in the rear compartment of the train. Footage confirmed that Júlia appeared conscious during the initial lift hill climb. The installed surveillance system contains no imagery documenting the remaining portions of the circuit.

“We took advantage of an admission deal and received complimentary priority passes to board Montezum early in the day,” stated João Pedro Bossoni. “The first lap concluded normally without presenting any noticeable health problems.”

Two minutes after departure, the coaster train returned to the station platform. The ride resumed operations shortly.

“She had already lost consciousness and was experiencing active seizures on the seat, which triggered total desperation because nobody knew what immediate steps to take,” João Pedro recalled. Medical staff members rushed to assist the victim as patrons vacated the area.

Park personnel approached the platform and waited six minutes before placing Júlia onto an emergency stretcher for medical extraction. Operators reopened the attraction to waiting lines immediately following her transfer.

Emergency responders transferred Júlia to the Santa Casa de Vinhedo hospital, a medical facility situated roughly 15 kilometers away from the complex gates. Physicians admitted her directly to the intensive care unit due to the life-threatening nature of her condition. Initial diagnostic scans detected acute intracranial hemorrhaging accompanied by extensive cerebral edema, compelling the surgical team to perform an emergency operation.

“The clinical situation demanded a decompressive craniectomy,” stated attending neurosurgeon Victor Batistela. “This surgical procedure requires the extraction of a large section of the skull to give swollen brain tissue sufficient room to expand safely.”

Júlia remained hospitalized inside the Vinhedo facility for 57 consecutive days following an official diagnosis of traumatic brain injury. Clinical reports finalized by neurosurgery teams determined that mechanical countercoup forces generated throughout the train circuit caused the acute physical trauma.

Medical specialists diagnosed Júlia Bossoni with severe traumatic brain injury resulting from a violent countercoup mechanism, in which sudden acceleration, deceleration, and rotational forces inside the speeding wooden train tore intracranial blood vessels, provoking extensive cerebral hemorrhaging and severe swelling that required the surgical removal of a large section of her cranial bone. Her condition required emergency intervention.

Family members confirmed that Júlia maintained clean medical records without any history of chronic physical conditions. “She experienced total loss of motor function across the entire left side of her body,” João Pedro noted. “Her left arm and leg remain immobile, while she continues to experience substantial speech difficulties and clouded memories.”

The São Paulo Public Prosecutor’s Office initiated a formal civil inquiry regarding the safety conditions of the attraction and ordered forensic police teams to conduct technical inspections on Montezum. The judicial case remains active.

Previous riders report severe neck and spinal injuries on the wooden coaster

Court filings show that Júlia does not represent the first patron to sustain severe physical trauma while riding Montezum. Visitor Nathalia Assenjo Motta endured an analogous spinal injury during a visit in 2018.

“The moment the train plunged and ascended violently into a curved section, my cervical spine endured a whiplash motion that produced an audible snap,” Nathalia stated. “My motor functions shut down instantly across my entire body.”

The resulting vertebral dislocation required orthopedic surgeons to surgically implant 12 spinal fixation pins alongside two structural stabilization rods. Hospital staff monitored her stabilization over several days.

Mobility returned to her limbs three days post-surgery, though medical examiners confirmed permanent restrictions in neck rotation. Hopi Hari management issued financial compensation to cover documented medical expenditures.

“I had to finance private physical therapy and aquatic therapy out of pocket because our health coverage refused to reimburse those specialized sessions,” Nathalia explained. “I endure severe ongoing pain that requires prescription pharmaceutical treatments daily.”

Motorcycle courier Márcio sustained debilitating injuries on Montezum in 2014 that resulted in complete quadriplegia following the ride. He passed away in 2023 due to complications stemming from a persistent urinary tract infection.

“The mechanical impact ruptured two cervical vertebrae, and medical documentation proved that the rapid whiplash movement directly triggered permanent quadriplegia,” stated legal counsel João Erhardt. His legal team pursued park accountability across multiple proceedings.

Public consumer complaint databases contain at least 40 documented grievances filed over a 24-month span by visitors citing bodily harm sustained aboard Montezum:

• Severe cervical whiplash and acute neck pain requiring emergency medical evaluations
• Ligament damage and knee sprains resulting from lateral carriage impacts
• Fractured rib bones caused by sudden decelerations along uneven track sections

Independent registries reveal recurring complaints concerning ride comfort and violent vibrations along older sections of the wooden structure. Patrons frequently noted inadequate padding along the seating partitions.

Amusement park management defends safety protocols and global inspection records

Hopi Hari stated through an official communique that Montezum maintains technical safety certifications granted by global audit organization TÜV Nord following yearly mechanical inspections. The enterprise asserted that operations fully align with national regulatory standard ABNT NBR 15926:2023 regarding commercial amusement attraction operations.

Venue representatives highlighted that printed warning signage and automated public address announcements continuously notify patrons regarding ride intensity levels. Posted guidelines formally advise against boarding for visitors presenting specific health profiles:

• Individuals diagnosed with pre-existing spinal or orthopedic conditions
• Pregnant visitors at any stage of gestation
• Patrons managing underlying cardiac or neurological diagnoses

Park spokespersons cited an administrative legal determination issued by the São Paulo Public Prosecutor’s Office in August 2026 concluding that the attraction posed no widespread collective hazard to patrons. That regulatory finding followed an inquiry initiated after park medics treated a woman suffering from severe neck stiffness in July.

Addressing Júlia’s hospitalization, park officials affirmed that internal responders provided immediate first-aid care, that company executives monitored clinical developments while covering medical fees, and that private insurance coverage was extended to her relatives. The board maintained that operations conformed to industry standards.

Representatives noted that the severe spinal incidents suffered by Nathalia and Márcio transpired prior to 2019 under separate corporate leadership. The press office characterized registered consumer complaints as statistically negligible when evaluated alongside the attraction’s throughput of more than 1,000,000 riders across the measured timeframe.

Corporate management had previously announced a comprehensive structural modernization project for Montezum in January, scheduling construction execution for late 2026. The refurbishment aims to replace aged track sections.

Family demands official technical inspections while continuing neurological recovery

Attorneys representing Júlia’s family submitted formal requests before the judiciary to compel independent technical audits that establish the mechanical factors involved in the ride incident. The petition seeks forensic validation of structural tolerances.

Five months after the roller coaster ride, Júlia has undergone seven distinct surgical procedures and continues intensive daily rehabilitation to regain bodily control. Her mother and João Pedro coordinate daily nursing duties between medical visits.

“We established a continuous routine including physical therapy three times per day across three days every week,” stated Danielle Rimolli, Júlia’s mother. “We coordinate those sessions alongside specialized occupational therapy and daily speech pathology appointments.”

The patient’s family formally requested that personal recovery recordings remain private to protect her dignity during long-term clinical care. Relatives focus exclusively on rehabilitating her functional independence.

“My absolute focus centers on ensuring her recovery and comfort,” João Pedro explained. “We want her to regain autonomy, to express her thoughts clearly, and to rebuild the personal strength that has always defined her life.”