Medial Unicompartmental Knee Arthroplasty.

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Abstract

[Indexed for MEDLINE] 7. Surg Technol Int. 2018 Jun 1;32:271-278. Robotic-Assisted and Computer-Navigated Unicompartmental Knee Arthroplasties: A Systematic Review. Naziri Q(1), Mixa PJ(2), Murray DP(1), Abraham R(1), Zikria BA(3), Sastry A(4), Patel PD(5). Author information: (1)Department of Orthopaedic Surgery and Rehabilitation Medicine, SUNY Downstate Medical Center, Brooklyn, New York. (2)Department of Orthopaedic Surgery, University of Maryland Medical Center, Baltimore, Maryland. (3)Department of Orthopaedic Surgery, Johns Hopkins University, Baltimore, Maryland. (4)Department of Orthopaedic Surgery, Portsmouth Regional Hospital, Portsmouth, New Hampshire. (5)Department of Orthopaedic Surgery, Cleveland Clinic Florida, Weston, Florida. INTRODUCTION: Unicompartmental knee arthroplasty (UKA) effectively improves pain and function associated with isolated compartmental knee arthritis. The developments of computer-navigated and robotic-assisted UKA are among the most significant changes that have improved patient outcomes. This study aimed to systematically review the literature to identify differences between computer-navigated and robotic-assisted UKAs. MATERIALS AND METHODS: Twenty total articles were identified. Data pertaining to demographics, outcomes, and complications/failures were extracted from each study. Reoperation/revision rates, indications for reoperation/revision, type of procedure, and number of patients who underwent conversion to TKA (when available) were recorded. RESULTS: Nine studies reported 451 computer-navigated medial UKAs, with 19 (3.9%) reportedly requiring reoperation: primary revision (n=8; 42.1%), conversion to TKA (n=6), and manipulation under anesthesia (n=5). Eleven studies reported 2,311 robotic-assisted UKAs (74 lateral UKAs), with 106 (5.0%) requiring reoperation: conversion to TKA (n=46; 43.4%), primary revision (n=43), reoperations without component-removal (n=15), subchondroplasty, and partial meniscectomy/synovectomy (both n=1). Reoperation rate discrepancy between computer-navigated and robotic-assisted UKA was not statistically significant (p=0.495); age and BMI differed between both groups (p