Abstract
This investigation assessed 106 consecutive primary proximal interphalangeal joint arthroplasties performed on border digits: 73 index or 33 little fingers. This was compared with 193 arthroplasties performed in non-border digits: 121 middle or 72 ring fingers. There were 20 proximal interphalangeal joint arthroplasties in the border digits that required revision surgery for pain and stiffness (10 digits), dislocation (six digits), implant fracture (one digit), and infection (three digits). Risk of revision surgery was not associated with border digit. The 5-year implant survival rate for the border digits was 81%. There was no significant difference in implant revision rate or joint dislocations between border and non-border digits. We conclude that proximal interphalangeal joint arthroplasties performed in border digits had similar pain relief, survivorship, complications, and reoperation rates compared with those performed in non-border digits.Level of evidence: IV.
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