Man in his 30s suffers leg injuries after motorbike collides with 4WD and gets pinned under trailer

A motorcyclist has serious leg injuries after an ugly crash that left his bike trapped beneath a trailer.

The man in his 30s was rushed to Royal Perth Hospital after crashing with a Toyota Prado on Gay Street in Huntingdale, south east of the city, just after 8pm on Monday.

Police and St John Ambulance paramedics responded to the crash.

Confronting photos showed the motorbike pinned under the rear wheel of a cage trailer towed by the Prado.

The man remains in hospital in a stable condition.

Police have asked for anyone with any information to contact Crime Stoppers online via www.crimestopperswa.com.au or by calling 1800 333 000.

The crash comes a day after a man was killed in a crash involving five vehicles on Tonkin Highway on Monday morning.