PMID- 35094135
OWN - NLM
STAT- MEDLINE
DCOM- 20221027
LR  - 20221027
IS  - 1434-3916 (Electronic)
IS  - 0936-8051 (Linking)
VI  - 142
IP  - 12
DP  - 2022 Dec
TI  - All-polyethylene unicompartmental knee arthroplasty is associated with increased 
      risks of poorer knee society knee score and lower satisfaction in obese patients.
PG  - 3977-3985
LID - 10.1007/s00402-021-04325-w [doi]
AB  - BACKGROUND: Although metal-backed tibial component (MB) is biomechanically 
      superior to all-polyethylene (AP) implants in fixed-bearing unicompartmental knee 
      arthroplasty (UKA), recent studies have shown comparable functional outcomes 
      between the two. However, no study has examined this comparison in obese patients 
      (BMI >/= 30 kg/m(2)). We investigated whether functional outcomes between the two 
      implants differ among obese patients, and whether the extent of obesity 
      influences these outcomes. PATIENTS AND METHODS: Four hundred twenty-two UKA 
      implants from 347 obese patients were reviewed retrospectively. Patients were 
      assessed using the Knee Society Knee Score (KSKS) and Function Score (KSFS), the 
      original Oxford Knee Score (OKS), and SF-36 Physical Component Summary (PCS) and 
      Mental Component Summary (MCS). Minimal clinically important difference (MCID) 
      attainment was recorded. Patients' fulfillment of expectations and satisfaction 
      with the surgery outcome was also graded. Patients were further divided into 
      lower obesity (BMI 30-34.9 kg/m(2)) and higher obesity (BMI >/= 35 kg/m(2)) to 
      examine effect modification. RESULTS: There were no differences in functional 
      outcomes and quality-of-life scores, MCID attainment of functional scores, as 
      well as satisfaction and expectation fulfillment between AP and MB. Among higher 
      obesity patients, AP was associated with a poorer KSKS (p = 0.031) and lower 
      proportion of satisfaction fulfillment (p = 0.041) 2 years postoperatively 
      compared to MB. CONCLUSION: We found no differences in functional and 
      quality-of-life outcomes between fixed-bearing AP and MB tibial components among 
      obese patients who underwent UKA. However, among higher obesity patients 
      (BMI >/= 35 kg/m(2)), patients with AP tibial component were associated with lower 
      KSKS score and a lower proportion of attaining satisfaction fulfillment 2 years 
      postoperatively.
CI  - (c) 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, 
      part of Springer Nature.
FAU - Foo, Wayne Yong Xiang
AU  - Foo WYX
AUID- ORCID: 0000-0001-9373-9311
AD  - Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore. 
      yxwayne@gmail.com.
FAU - Liow, Ming Han Lincoln
AU  - Liow MHL
AD  - Department of Orthopaedic Surgery, Singapore General Hospital, 20 College Road, 
      Academia, Level 4, Singapore, 169865, Singapore.
FAU - Chen, Jerry Yongqiang
AU  - Chen JY
AD  - Department of Orthopaedic Surgery, Singapore General Hospital, 20 College Road, 
      Academia, Level 4, Singapore, 169865, Singapore.
FAU - Tay, Darren Keng Jin
AU  - Tay DKJ
AD  - Department of Orthopaedic Surgery, Singapore General Hospital, 20 College Road, 
      Academia, Level 4, Singapore, 169865, Singapore.
FAU - Lo, Ngai Nung
AU  - Lo NN
AD  - Department of Orthopaedic Surgery, Singapore General Hospital, 20 College Road, 
      Academia, Level 4, Singapore, 169865, Singapore.
FAU - Yeo, Seng Jin
AU  - Yeo SJ
AD  - Duke-NUS Medical School, 8 College Road, Singapore, 169857, Singapore.
AD  - Department of Orthopaedic Surgery, Singapore General Hospital, 20 College Road, 
      Academia, Level 4, Singapore, 169865, Singapore.
LA  - eng
PT  - Journal Article
DEP - 20220130
PL  - Germany
TA  - Arch Orthop Trauma Surg
JT  - Archives of orthopaedic and trauma surgery
JID - 9011043
RN  - 9002-88-4 (Polyethylene)
SB  - IM
MH  - Humans
MH  - *Arthroplasty, Replacement, Knee/adverse effects
MH  - Polyethylene
MH  - Personal Satisfaction
MH  - Retrospective Studies
MH  - Patient Satisfaction
MH  - Treatment Outcome
MH  - Knee Joint/surgery
MH  - Obesity/complications/surgery
MH  - *Osteoarthritis, Knee/complications
MH  - *Knee Prosthesis
OTO - NOTNLM
OT  - All polyethylene
OT  - Functional outcomes
OT  - Metal backed
OT  - Obesity
OT  - Unicompartmental knee arthroplasty
EDAT- 2022/01/31 06:00
MHDA- 2022/10/28 06:00
CRDT- 2022/01/30 20:37
PHST- 2021/02/26 00:00 [received]
PHST- 2021/12/19 00:00 [accepted]
PHST- 2022/01/31 06:00 [pubmed]
PHST- 2022/10/28 06:00 [medline]
PHST- 2022/01/30 20:37 [entrez]
AID - 10.1007/s00402-021-04325-w [pii]
AID - 10.1007/s00402-021-04325-w [doi]
PST - ppublish
SO  - Arch Orthop Trauma Surg. 2022 Dec;142(12):3977-3985. doi: 
      10.1007/s00402-021-04325-w. Epub 2022 Jan 30.