Patellar resurfacing in knee arthroplasty: A comprehensive review and meta-analysis

Table 2 Incidence rates of patellar resurfacing across different registries, (%)¹

Registry	Routine resurfacing	Selective resurfacing	Non-resurfacing
AOANJRR (2022)	80	15	5
NJR (2021)	70	20	10
DKR (2023)	85	10	5
NZJR (2022)	75	20	5
SHAR (2021)	90	5	5

¹The table demonstrates that routine resurfacing is the most common approach in all the listed registries, though the percentage varies from 70% to 90%. Selective resurfacing is the next most common approach, ranging from 5% to 20%. Non-resurfacing is the least common strategy, with percentages ranging from 5% to 10%. These variations reflect differing clinical practices and preferences in managing the patella during knee arthroplasty in different countries.

AOANJRR: Australian Orthopedic Association National Joint Replacement Registry; DKR: Danish Knee Arthroplasty Registry; NZJR: New Zealand Joint Registry; SHAR: Swedish Hip Arthroplasty Register.