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Bounce houses are a staple of childhood fun, but they carry significant injury risks, with one child treated in a U.S. emergency department approximately every 45 minutes. While they are often viewed as safer than trampolines, injuries have skyrocketed—increasing 15-fold over a 20-year period. 
Common Types of Injuries
Most bounce house injuries are non-fatal, but they can be severe enough to require surgery or long-term rehabilitation. 
Fractures and Broken Bones: Account for approximately 26% to 28% of injuries, with the arms and legs being most affected.
Strains and Sprains: Represent about 26% of cases, often occurring in the ankles or wrists due to awkward landings.
Head and Neck Injuries: Roughly 18.5% of injuries involve the head and neck, including concussions and, in rare cases, paralysis or spinal trauma.
Minor Trauma: Contusions (bruises), lacerations, and dental injuries are also frequent. 
Primary Risk Factors
Collisions: Over 50% of injuries occur when multiple children—especially those of different ages and sizes—bounce together. Larger children can unintentionally crush or knock over smaller ones.
Wind and Weather: Wind is an inflatable's greatest enemy. Gusts as low as 15–20 mph can lift or topple a bounce house, even if it is staked down.
Lack of Supervision: Approximately 43% of injuries occur when there is no direct adult supervision. Active monitoring is required to stop rough play like flips and somersaults.
Heat Hazard: On hot days, the internal temperature of a bounce house can exceed 100°F, significantly higher than the outside air, risking heat exhaustion or burns.
Falls: About 43% of incidents involve children falling out of the structure, often due to a lack of safety mats at the entrance. 
Safety Guidelines for Parents
To minimize risks, health and safety experts recommend the following:
Age Limits: Children under 6 years old should generally not use standard bounce houses due to a lack of motor control and coordination.
Group by Size: Only allow children of similar age and weight to jump together.
Prohibit Stunts: Strictly enforce a "no flips, no wrestling, and no somersaults" rule.
Check the Wind: Always deflate the unit if winds reach 15–20 mph. Use a professional Inflatable Bouncer Safety guide to ensure proper anchoring with at least 18-inch stakes.
Preparation: Remove shoes, jewelry, and sharp objects (like pens or glasses) before entry to prevent punctures and scrapes.