rheumatology-congress-physiology-2019-scientifictracks

Page 27

December 9-10, 2019 | Barcelona, Spain

Volume 14

ARTHRITIS AND RHEUMATOLOGY

ANATOMY AND PHYSIOLOGY

International Conference on

Journal of Orthopaedics Trauma Surgery

and Related Research

Rheumatology Congress 2019 & Anatomy and Physiology 2019

December 09-10, 2019

J Orthop Trauma Surg Rel Res, ISSN: 1897-2276

Does unicompartmental knee arthroplasty have worse outcomes in spontaneous

osteonecrosis of the knee than in medial compartment osteoarthritis? A systematic

review and meta-analysis

Chan Yoon

Seoul Bumin Hospital, South Korea

Introduction

: The role of Unicompartmental knee arthroplasty (UKA) in spontaneous osteonecrosis of the knee (SONK) remains

controversial, even though SONK involves only one compartment of the knee joint. We aimed to compare the survival rate and

clinical outcomes of UKA in SONK and medial compartment osteoarthritis (MOA) via a meta-analysis of previous studies.

Materials and Methods

: MEDLINE, Embase, and Cochrane Library were searched up to January 2018 with keywords related

to SONK and knee arthroplasty. Studies were selected with predetermined inclusion criteria: (1) medial UKA as the primary

procedure, (2) reporting implant survival or clinical outcomes of osteonecrosis and osteoarthritis, and (3) follow-up period > 1

year. Quality assessment was performed using the risk of bias assessment tool for non-randomized studies. A random-effects

model was used to estimate the pooled relative risk (RR) and standardized mean difference.

Results

: The incidence of UKA revision for any reason was significantly higher in SONK than in MOA group (pooled RR =

1.83, p = 0.009). However, the risk of revision due to aseptic loosening was not

significantly different between the groups (Figure 1). Moreover, when stratified

by the study quality, high quality studies showed similar risk of overall revision

in SONK and MOA (p = 0.71). Subgroup analysis revealed no significant

difference in failure between SONK and MOAafter cemented mobile and fixed

bearing UKA. Results of uncemented UKA was reported only in one study,

which showed higher failure of SONK compared to MOA. Clinical outcomes

after UKA were similar between SONK and MOA (p = 0.66).

Conclusions

: Cemented UKA has similar survival and clinical outcomes in

SONK and MOA. Prospective studies designed specifically to compare the

UKA outcomes in SONK and MOA are necessary.

Biography

Chan Yoon has his expertise in knee arthroplasty and arthroscopy. He has finished residency at Seoul National University Hospital,

department of orthopaedic surgery, and specialized in knee arthroplasty and arthroscopy during his fellowship at Seoul Metropolitan

Government Boramae Medical Center. He is currently working as an orthopaedic surgical staff at Seoul Bumin Hospital. He has special

interest in total and partial knee arthroplasty.