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Three Dimensional CT-based Virtual Patellar Resection in Female Patients Undergoing Total Knee Replacement: A Comparison between Tendon and Subchondral Method

Authors
Park, DY; Ji, HM; Kwak, KS; Nair, SG; Won, YY
Citation
Clinics in orthopedic surgery, 4(3):193-199, 2012
Journal Title
Clinics in orthopedic surgery
ISSN
2005-291X2005-4408
Abstract
Background: Due to its small size, variable shape, and lack of distinct anatomical landmarks, osteoarthritic knees make a precise patellar resection extremely difficult.



Methods: We performed virtual patellar resection with digital software using three dimensional computed tomography scans of knees from 49 patients who underwent primary total knee replacement at our hospital. We compared 2 commonly used resection methods, the tendon method (TM) and the subchondral method, to determine an ideal resection plane with respect to the symmetry and thickness of the patellar remnant.



Results: The TM gave a thicker resected patella, and a less oval cut surface shape, which gives better coverage for a domed prosthesis. Both methods, however, gave a symmetric resection both superior-inferiorly, as well as mediolaterally.



Conclusions: Although TM appears statistically better with respect to the thickness and cut surface shape, only further intraoperative studies with long-term clinical follow-up may provide us with the most appropriate patellar resection method.
Keywords
Three dimensional computed tomographyPatellar resurfacing cantly infl
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Radiology
Journal Papers > School of Medicine / Graduate School of Medicine > Orthopedic Surgery
AJOU Authors
지, 형민곽, 규성원, 예연
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