The incident, which happened on Crabtree Road in Bulwell on Tuesday, June 21 just after 5pm, reportedly involved the motorbike colliding with a stationary car.
Police placed a temporary cordon on the road while emergency services attended the scene.
The bike rider, a 25 year-old man, was reported to have received potentially life-altering injuries to one of his legs in the incident, as well as a number of other fractures.
The man was taken to hospital and the police cordon later lifted after a number of hours.
Police are continuing to investigate the incident and establish what happened.
Anyone who witnessed it or has any information, should call the police on 101.