The Scottish international stopper was injured in the first minute of his side’s 2-0 win but, after receiving treatment, was able to stay on the field, making a few crucial saves when the game was tied at 0-0.
It has since been revealed that the keeper suffered a dislocated shoulder, a fact only discovered after he participated in training the following morning.
Bell was sent to a specialist on Monday and Rangers anxiously wait the full extent of the problem.
It could be that all he requires is a pain killing injection and a few weeks rest. The worst case scenario is surgery, which would likely keep him out until November.
Backup Steve Simonsen took over the goalkeeping duties in Rangers’ 8-1 win over Clyde in the Petrofac Training Cup on Monday, and is expected to retain his place for Saturday’s meeting with Dumbarton.