EFORT Open Rev 2021;6:861-871. DOI: 10.1302/2058-5241.6.200156

Patellar management during total knee arthroplasty: a review

Kara McConaghy1, Tabitha Derr2, Robert M. Molloy3, Alison K. Klika3, Steven Kurtz2,4, and Nicolas S. Piuzzi3

Knee

The optimal management of the patella during total knee arthroplasty (TKA) remains controversial and surgeons tend to approach the patella with one of three general mindsets: always resurface the patella, never resurface the patella, or selectively resurface the patella based on specific patient or patellar criteria.
Studies comparing resurfacing and non-resurfacing of the patella during TKA have reported inconsistent and contradictory findings.
When resurfacing the patella is chosen, there are a number of available patellar component designs, materials, and techniques for cutting and fixation.
When patellar non-resurfacing is chosen, several alternatives are available, including patellar denervation, lateral retinacular release, and patelloplasty. Surgeons may choose to perform any of these alone, or together in some combination.
Prospective randomized studies are needed to better understand which patellar management techniques contribute to superior postoperative outcomes. Until then, this remains a controversial topic, and options for patellar management will need to be weighed on an individual basis per patient.