Common injuries associated with rebounding include orthopedic and neurological impairments such as sprains, shin splints, fractures and dislocations. Soft tissue injuries, including bruising and lacerations, may also occur as a result of landing on the non-elastic edges of the trampoline.
I witnessed this firsthand in the class that I participated in. My exercise partner rolled her ankle slightly during a simple jumping drill and was left swollen and limping for several days afterwards.
For most people, however, the potential benefits outweigh the risks — risks that can be reduced by following some simple safety tips.