The influence of severe knee varus and patellofemoral joint degeneration on outcomes following fixed-bearing medial robotic-assisted unicompartmental knee arthroplasty: a minimum of 18-month follow-up.

ABSTRACT:

Background

This study aimed to investigate whether preoperative severe varus deformity, patellofemoral joint (PFJ) osteoarthritis severity, or PFJ alignment influenced the early outcomes following primary fixed-bearing medial robotic-assisted unicompartmental knee arthroplasty (RA-UKA) in carefully selected patient cohort.

Methods

One-hundred-fifty patients undergoing primary fixed-bearing medial RA-UKA with a mean 23.7-month follow-up (SD 2.1; range: 18-26) were prospectively enrolled. Outcomes were compared based on knee varus and PFJ osteoarthritis severity. Radiographic evaluation included the Altman score, patellar tilt and congruence angles as well as the hip-knee-ankle, coronal femoral component, and coronal tibial component angles (HKA, c-FCA, and c-TCA, respectively

SUBMITTER: Huang Z 

PROVIDER: S-EPMC12754933 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature