Hi, thanks for writing to HCM.
If the fracture
is Extraarticular (fracture of bone outside the joint area), then leaving a piece of small bone will not make any difference with regard to the healing process.
If the fracture is Intraarticular (fracture lying within the joint), then there is a possibility that the loose fragment may cause damage to the cartilage
leading to early arthritis
Hope this information is helpful. Good day