Patella Baja in Total Knee Arthroplasty

Zachary C. Lum, Augustine M. Saiz, Gavin C. Pereira, John P. Meehan

Research output: Contribution to journalReview article

Abstract

Patella baja in total knee arthroplasty can result in impingement, pain, and decreased range of motion. Etiology can range from previous knee surgeries such as anterior cruciate ligament reconstruction, retrograde femoral nail, infrapatellar fat pad resection, and previous total knee arthroplasty. Diagnosis can be confirmed by one of a number of measurements of patellar height including Insall-Salvati and Blackburne-Peel ratios. It is important to differentiate between true patella baja and pseudopatella baja by patellar height ratio. Treatment includes correct identification of the underlying etiology and appropriate management. Surgical management strategies include tibial tubercle osteotomy, distal femoral augment and revision, proximalization of the patellar component, modification of the anterior tibial component, and/or Z-plasty of the patellar tendon. We review the outcomes for each of these procedures.

Original languageEnglish (US)
Pages (from-to)316-323
Number of pages8
JournalJournal of the American Academy of Orthopaedic Surgeons
Volume28
Issue number8
DOIs
StatePublished - Apr 15 2020

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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