Injuries from falls can result from a number of different situations. The most common causes of falls are defective stairways and ramps, potholes in parking lots, sidewalk deviations, liquid or other foreign substances on floors, and accumulations of snow and ice. Whether the cause of the fall involved negligence depends on certain factors. Under most state's laws of negligence, the property owner must have had actual knowledge or constructive knowledge that the condition existed prior to the fall. Constructive knowledge means that the property owner should have known that the condition existed. Therefore, if a property owner had actual or constructive knowledge that a problem existed and did nothing to correct the problem, the property owner may be considered negligent if someone is injured on his or her property. For more information on the causes of falls and personal injury accidents, please consult a qualified attorney.