rheumatology-congress-physiology-2019-scientifictracks

Page 29

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

Bone mineral density around the knee joint: Correlation with central bone mineral

density and associated factors

Chan Yoon

Seoul Bumin Hospital, South Korea

Introduction

: The aims of this study were to 1) assess the bone mineral density (BMD) around the knee joint, 2) determine the

correlation between central and knee BMDs, and 3) investigate the factors associated with BMD around the knee joint in patients

with knee osteoarthritis (OA).

Methodology

: This cross-sectional study included 122 patients who underwent total knee arthroplasty (TKA). Central and

knee dual-energy X-ray absorptiometry (Fig. 1) was performed preoperatively. BMD at six regions of interest (ROIs) around

the knee joint were measured (Fig. 2), and their correlations with central BMD were determined using Spearman’s correlation

analysis. Lower limb alignment, severity of OA, body mass index (BMI), preoperative functional and pain scores were assessed

to elucidate the factors associated with knee BMD using linear regression analysis.

Results

: Around the knee joint, BMD was the lowest at the distal femoral metaphysis and lateral tibial condyle. Knee BMD was

significantly correlated with central BMD (Table). However, the correlation coefficients varied by the ROI.Additionally, multivariate

analysis revealed different associations with respect to the regions around the knee joint. Varus alignment of the lower limb was

associated with increased BMD of the medial condyles and decreased BMD of lateral condyles. High grade OA was a protective

factor; it was associated with increased BMD at the lateral condyles of the femur and tibia. Higher

BMI was an independent protective factor in all ROIs around the knee joint except the lateral

femoral condyles. Lower functional level was not associated with decreased BMD, whereas a

higher pain score was significantly associated with lower BMD at the proximal tibial metaphysis.

Conclusions

: KneeBMDwas significantly correlatedwith central BMD. However, the correlations

varied with the regions around the knee joint probably due to their independent association with

the alignment of the lower limb, severity of OA, BMI, and preoperative pain level.

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 a orthopaedic surgical staff at Seoul Bumin Hospital. He has special

interest in total knee arthroplasty.