Patella Baja Incidence, Risk Factors and Motion After Revision Total Knee Arthroplasty.

ABSTRACT:

Background

Patellar height changes may have significant clinical implications, particularly in the setting of revision total knee arthroplasty (rTKA). True patella baja (PB) is due to patellar tendon shortening, whereas pseudo-PB (PPB) is distal displacement of the patella due to joint line elevation. Our purpose was to examine the incidence and risk factors associated with PB and PPB following rTKA.

Methods

A retrospective analysis of 415 rTKAs by a single surgeon between 2009 and 2019 was conducted. PB was defined by an Insall-Salvati ratio less than 0.8 and a Blackburne-Peel ratio less than 0.54. PPB was characterized by a relatively lower patella position compared to the joint line, but within the normal range of Insall-Salvati ratio (0.8-1.2) with a Blackburne-Peel rati

SUBMITTER: Gapinski Z 

PROVIDER: S-EPMC12743523 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature