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Intraosseous blood flow of the everted or laterally-retracted patella during total knee arthroplasty

Stoffel, Karl K; Flivik, Gunnar LU ; Yates, Piers J and Nicholls, Rochelle L (2007) In Knee 14(6). p.434-438
Abstract
Patellofemoral problems are relatively common sequelae of total knee arthroplasty (TKA), and many factors contribute to these complications. Vascular compromise has been identified as a possible contributing factor, and was selected for further investigation in the present study. Laser Doppler Flowmetry was used to quantify patella intraosseous blood flow in vivo during TKA surgery without the use of a tourniquet. Flow was measured after medial parapatellar arthrotomy, and compared to flow during patella eversion and lateral retraction. Patella blood flow during eversion was reduced to 13% of baseline values (p<0.05). A significantly greater proportion of flow was preserved during lateral retraction (53%), although the reduction from... (More)
Patellofemoral problems are relatively common sequelae of total knee arthroplasty (TKA), and many factors contribute to these complications. Vascular compromise has been identified as a possible contributing factor, and was selected for further investigation in the present study. Laser Doppler Flowmetry was used to quantify patella intraosseous blood flow in vivo during TKA surgery without the use of a tourniquet. Flow was measured after medial parapatellar arthrotomy, and compared to flow during patella eversion and lateral retraction. Patella blood flow during eversion was reduced to 13% of baseline values (p<0.05). A significantly greater proportion of flow was preserved during lateral retraction (53%), although the reduction from baseline was still significant (p<0.05). A statistically significant difference in flow (60% of baseline) was also noted when the leg was flexed from full extension to 90 degrees (p<0.05) with the patella in its normal anatomical alignment. In this study, we have demonstrated the sensitivity of the patella blood supply to knee flexion angle and patella dislocation technique, particularly to patella eversion. These may be important findings with regard to surgical technique for TKA. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Knee
volume
14
issue
6
pages
434 - 438
publisher
Elsevier
external identifiers
  • pmid:17826095
  • wos:000251915700004
  • scopus:36248997721
ISSN
1873-5800
DOI
10.1016/j.knee.2007.07.005
language
English
LU publication?
yes
id
778cef06-5563-4edd-bf45-e0dac502fe98 (old id 1143813)
date added to LUP
2008-07-28 15:46:54
date last changed
2017-06-18 03:44:01
@article{778cef06-5563-4edd-bf45-e0dac502fe98,
  abstract     = {Patellofemoral problems are relatively common sequelae of total knee arthroplasty (TKA), and many factors contribute to these complications. Vascular compromise has been identified as a possible contributing factor, and was selected for further investigation in the present study. Laser Doppler Flowmetry was used to quantify patella intraosseous blood flow in vivo during TKA surgery without the use of a tourniquet. Flow was measured after medial parapatellar arthrotomy, and compared to flow during patella eversion and lateral retraction. Patella blood flow during eversion was reduced to 13% of baseline values (p&lt;0.05). A significantly greater proportion of flow was preserved during lateral retraction (53%), although the reduction from baseline was still significant (p&lt;0.05). A statistically significant difference in flow (60% of baseline) was also noted when the leg was flexed from full extension to 90 degrees (p&lt;0.05) with the patella in its normal anatomical alignment. In this study, we have demonstrated the sensitivity of the patella blood supply to knee flexion angle and patella dislocation technique, particularly to patella eversion. These may be important findings with regard to surgical technique for TKA.},
  author       = {Stoffel, Karl K and Flivik, Gunnar and Yates, Piers J and Nicholls, Rochelle L},
  issn         = {1873-5800},
  language     = {eng},
  number       = {6},
  pages        = {434--438},
  publisher    = {Elsevier},
  series       = {Knee},
  title        = {Intraosseous blood flow of the everted or laterally-retracted patella during total knee arthroplasty},
  url          = {http://dx.doi.org/10.1016/j.knee.2007.07.005},
  volume       = {14},
  year         = {2007},
}