کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4078109 1267244 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Intraosseous blood flow of the everted or laterally-retracted patella during total knee arthroplasty
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Intraosseous blood flow of the everted or laterally-retracted patella during total knee arthroplasty
چکیده انگلیسی

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° (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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Knee - Volume 14, Issue 6, December 2007, Pages 434–438
نویسندگان
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