The Spaniard was declared unfit to ride in the eighth round of the season on Sunday morning due to a rib fracture sustained over the course of a bruising German Grand Prix last weekend.
Marquez crashed five times across the Sachsenring round, with his final fall in warm-up leading to a small hand fracture and ruling him out of the main grand prix.
Further check-ups revealed an ankle injury and a rib fracture, with the latter now forcing him to skip the race of the summer break.
“Marc Marquez will sit out the Grand Prix at the TT Circuit Assen after being declared unfit as a result of the injuries sustained at the German GP last week, which have been aggravated further in Assen,” read a short statement from HRC.
Marquez was planning to take part in the Dutch GP to gather as much data as possible for his Honda engineers to improve its troubled RC213V.
He endured a troubled sprint race en route to 17th on Saturday, as he took a safety-first approach at Assen.
Source: Autosport