Bristol's Ross Johnston has been ruled out for two months after injuring his elbow in Sunday's 21-15 defeat by Cornish Pirates.
The 27-year-old was taken off at half-time at Mennaye Field and a scan revealed he has ligament damage.
Johnston has made six appearances this season, scoring three times.
He missed the start of the Championship campaign after picking up a five-week ban for a tip-tackle in a pre-season game against Clifton.
Johnston joins prop Jason Hobson (knee), Jack Tovey (shoulder) and Errie Claassens (knee) on Bristol's long-term injury list.