When arthroplasty involves first débriding and then resurfacing a joint by placing a foreign material-such as fascia, metal, or a silicone spacer-between the articulating surfaces of a joint, it is called a(n):

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Interposition arthroplasty involves placing a foreign material between the articulating surfaces of a joint. This is in contrast to excision arthroplasty, which involves removing part of the joint, and hemireplacement arthroplasty, which involves replacing only one part of the joint. Abrasion arthroplasty involves using a tool to remove damaged cartilage and bone from a joint.

When Arthroplasty Involves First Débriding and Then Resurfacing a Joint