Here's a great roundtable discussion where leaders in the field of FAI and hip arthroscopy discuss the importance of the labrum and the results of treatment from removal or debridement vs repair.
These articles are on ortho supersite. You will be allowed to view only a couple of times before being required to become a member. It is a wonderful and free resource for orthopaedic articles written by experts. There are several great articles on FAI.
Here's a preview of Dr. Phillipon's discussion of debridement and removal vs labral repair. Each surgeon voices different opinions and concerns:
"Philippon: The literature continues to grow to support labral preservation. Ferguson and colleagues showed that contact stresses in acetabular cartilage increase with time, and are up to 92% higher in the absence of the labrum".
"Another study shows labral disruption and DJD of the hip were related. Espinosa and colleagues showed that labral repair resulted in 80% excellent outcomes, while debridement only had excellent outcomes in 28%."