PMID- 19968604
OWN - NLM
STAT- MEDLINE
DCOM- 20100408
LR  - 20211020
IS  - 1745-3682 (Electronic)
IS  - 1745-3674 (Print)
IS  - 1745-3674 (Linking)
VI  - 81
IP  - 1
DP  - 2010 Feb
TI  - Early outcomes of patella resurfacing in total knee arthroplasty.
PG  - 108-13
LID - 10.3109/17453670903413145 [doi]
AB  - BACKGROUND: Patella resurfacing in total knee arthroplasty is a contentious 
      issue. The literature suggests that resurfacing of the patella is based on 
      surgeon preference, and little is known about the role and timing of resurfacing 
      and how this affects outcomes. METHODS: We analyzed 134,799 total knee 
      arthroplasties using data from the Australian Orthopaedic Association National 
      Joint Replacement Registry. Hazards ratios (HRs) were used to compare rates of 
      early revision between patella resurfacing at the primary procedure (the 
      resurfacing group, R) and primary arthroplasty without resurfacing 
      (no-resurfacing group, NR). We also analyzed the outcomes of NR that were revised 
      for isolated patella addition. RESULTS: At 5 years, the R group showed a lower 
      revision rate than the NR group: cumulative per cent revision (CPR) 3.1% and 
      4.0%, respectively (HR = 0.75, p < 0.001). Revisions for patellofemoral pain were 
      more common in the NR group (17%) than in the R group (1%), and "patella only" 
      revisions were more common in the NR group (29%) than in the R group (6%). 
      Non-resurfaced knees revised for isolated patella addition had a higher revision 
      rate than patella resurfacing at the primary procedure, with a 4-year CPR of 15% 
      and 2.8%, respectively (HR = 4.1, p < 0.001). INTERPRETATION: Rates of early 
      revision of primary total knees were higher when the patella was not resurfaced, 
      and suggest that surgeons may be inclined to resurface later if there is 
      patellofemoral pain. However, 15% of non-resurfaced knees revised for patella 
      addition are re-revised by 4 years. Our results suggest an early beneficial 
      outcome for patella resurfacing at primary arthroplasty based on revision rates 
      up to 5 years.
FAU - Clements, Warren J
AU  - Clements WJ
AD  - Orthopaedic Research Unit, Prince Charles Hospital, Brisbane, Australia.
FAU - Miller, Lisa
AU  - Miller L
FAU - Whitehouse, Sarah L
AU  - Whitehouse SL
FAU - Graves, Stephen E
AU  - Graves SE
FAU - Ryan, Philip
AU  - Ryan P
FAU - Crawford, Ross W
AU  - Crawford RW
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - Sweden
TA  - Acta Orthop
JT  - Acta orthopaedica
JID - 101231512
SB  - IM
MH  - *Arthroplasty, Replacement, Knee/adverse effects/methods
MH  - Australia
MH  - Humans
MH  - Knee Prosthesis/adverse effects
MH  - Osteoarthritis, Knee/surgery
MH  - *Patella
MH  - Prosthesis Failure
MH  - Registries
MH  - Reoperation
MH  - Time Factors
MH  - Treatment Outcome
PMC - PMC2856213
EDAT- 2009/12/09 06:00
MHDA- 2010/04/09 06:00
PMCR- 2010/02/01
CRDT- 2009/12/09 06:00
PHST- 2009/12/09 06:00 [entrez]
PHST- 2009/12/09 06:00 [pubmed]
PHST- 2010/04/09 06:00 [medline]
PHST- 2010/02/01 00:00 [pmc-release]
AID - SORT_A_441492_O [pii]
AID - 10.3109/17453670903413145 [doi]
PST - ppublish
SO  - Acta Orthop. 2010 Feb;81(1):108-13. doi: 10.3109/17453670903413145.