Related Experiment Video
Updated: Jul 15, 2026

A Tactile Automated Passive-Finger Stimulator (TAPS)
Published on: June 3, 2009
[When doors slam, fingers jam!]
Insights
Door-related finger injuries are common in young children, often occurring at home and preventable with safety devices. These painful accidents lead to significant healthcare costs and potential long-term damage.
Area of Science:
- Pediatric Emergency Medicine
- Traumatology
- Epidemiology
Context:
- Accidental pediatric finger injuries from doors are a frequent occurrence in emergency departments.
- Understanding the epidemiology of these injuries is crucial for developing targeted prevention strategies.
Purpose:
- To conduct an epidemiological analysis of children admitted to a pediatric emergency unit for finger injuries sustained from being crushed in a door.
- To identify risk factors, injury patterns, and management outcomes associated with these common childhood accidents.
Summary:
- A prospective study analyzed 340 children with 427 digital lesions from door-related crush injuries, predominantly occurring domestically.
- The middle and ring fingers were most commonly affected, with nail damage, wounds, and distal phalanx fractures being frequent.
- Adults were present in 75% of incidents, and 94% of families did not use safety devices, highlighting a significant preventable aspect.
Impact:
- These injuries result in significant healthcare costs and can lead to functional or aesthetic sequelae.
- The findings underscore the need for accessible safety devices for doors to prevent these frequent and often avoidable home accidents in toddlers.
Aim:
Epidemiological analysis in a universitary paediatric emergency unit of children admitted after accidental injuries resulting from fingers crushed in a door.
Material And Methods:
Prospective, descriptive cohort study from September 6th, 2004 to July 1st, 2005 included all children admitted for finger injuries crushed in a non-automatic door.
Exclusions:
included accidents due to automatic doors, toy's or refrigerator doors, families who refused to participate to the study or families who had left the waiting area before medical examination. Collected data were patient and family characteristics, accident characteristics and its management.
Results:
Three hundred and forty children affected by 427 digital lesions were included. The mean age was 5.5+/-3.8 years (range 4 months - 15.5 years). Male/female ratio was equal to 1.2: 1. Fifty-eight percent of patients belonged to families composed of 3 or more siblings. Ninety-three per cent of families came to hospital within the first 2 hours after the accident (mean delay 99+/-162 min, median range 54 minutes). Location of the accident was: domestic (62%, at home (64%)), at school (17%). Locations within the home were: the bedroom (33%), bathroom and toilets (21%). An adult was present in 75% of cases and responsible for the trauma in 25% of accidents, another child in 44%. The finger or fingers were trapped on the hinge side in 57% of patients. No specific safeguard devices were used by 94% of families. Among victims, 20% had several crushed digits; left and right hand were injured with an equal frequency. The commonest involved digits were: the middle finger (29%), the ring finger (23%). The nail plate was damaged in 60% of digital lesions, associated with a wound (50%), a distal phalanx fracture (P3) (12%). Six children had a partial or complete amputation of P3, 2 children a lesion of the extensor tendon, 1 child had a rupture of the external lateral ligament. Three percent of children required an admission to the paediatric orthopaedic surgery unit. Post-traumatic pain was mainly limited to the first 48 h (64%). Early complications included: 16 cases of infected injuries, 3 cases of pulpar necrosis. The total cost of hospital care was 71,500 euros, the average cost for hospitalised patient equal to 2100 euros and for ambulatory cases equal to 141 euros; the annual cost was estimated at 81,600 euros.
Conclusion:
Associated with potentially serious digital injuries, functional or inesthetic sequelae, this painful experience still remains too frequent in toddlers for a home accident that could be often prevented by the acquisition of specific protective doors devices and for a reasonable cost compared to the cost of hospital care.
Related Concept Videos
Frictional Force
Rolling With Slipping
An object's rolling motion is characterized by its rotation around its axis, while linear motion refers to the object's translational motion along a surface. Frictional forces can affect...
Frictional Forces on Screws
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
Design Example: Forces in Sluice Gate
Key variables in...
Dry Friction
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
Kinetic Friction

