scholarly journals Three-dimensional implant position and orientation after total knee replacement performed with patient-specific instrumentation systems

2013 ◽  
Vol 32 (2) ◽  
pp. 331-337 ◽  
Author(s):  
Francesco Cenni ◽  
Antonio Timoncini ◽  
Andrea Ensini ◽  
Silvia Tamarri ◽  
Claudio Belvedere ◽  
...  
Keyword(s):  
Total Knee Replacement ◽  
Knee Replacement ◽  
Three Dimensional ◽  
Patient Specific ◽  
Implant Position ◽  
Patient Specific Instrumentation ◽  
Total Knee ◽  
Position And Orientation

Intra- and post-operative accuracy assessments of two different patient-specific instrumentation systems for total knee replacement

2013 ◽  
Vol 22 (3) ◽  
pp. 621-629 ◽  
Author(s):  
Andrea Ensini ◽  
Antonio Timoncini ◽  
Francesco Cenni ◽  
Claudio Belvedere ◽  
Francesca Fusai ◽  
...  
Keyword(s):  
Total Knee Replacement ◽  
Knee Replacement ◽  
Patient Specific ◽  
Patient Specific Instrumentation ◽  
Total Knee ◽  
Accuracy Assessments

scholarly journals The surgeon plays an important role in size planning with patient specific instrumentation for total knee replacement.

10.29007/g13b ◽  
2018 ◽  
Author(s):  
Davide Cucchi ◽  
Riccardo Compagnoni ◽  
Paolo Ferrua ◽  
Alessandra Menon ◽  
Pietro Randelli
Keyword(s):  
Total Knee Replacement ◽  
Knee Replacement ◽  
Patient Specific ◽  
Component Position ◽  
Careful Evaluation ◽  
Tibial Tray ◽  
Component Size ◽  
Patient Specific Instrumentation ◽  
Total Knee

Component position and sizing in total knee replacement (TKR) could be improved by patient specific instrumentation (PSI). The purpose of the study was to evaluate the reliability of the manufacturer plan in predicting final component sizes for TKR.Forty-five TKRs were prospectively enrolled and data on component size were recorded from the initial manufacturer’s proposal, the final plan modified after surgeon’s and from the actually implanted prostheses.Pre-operative modifications were required in more than 50% of the cases, with the tibial tray size requiring more frequent changes. The surgeon’s planning showed a significantly higher accuracy than the manufacturer’s one regarding tibial tray size (p < 0.05) but not femoral components size (p: n.s.). Careful evaluation by an experienced knee surgeon is recommended when planning TKR with PSI.

scholarly journals Patient specific instrumentation influences hemoglobin decrease after total knee replacement.

10.29007/f8h2 ◽  
2018 ◽  
Author(s):  
Davide Cucchi ◽  
Beatrice Zanini ◽  
Paolo Ferrua ◽  
Riccardo Compagnoni ◽  
Alessandra Menon ◽  
...  
Keyword(s):  
Blood Loss ◽  
Total Knee Replacement ◽  
Knee Replacement ◽  
Medullary Canal ◽  
Patient Specific ◽  
Reduce Blood Loss ◽  
Patient Specific Instrumentation ◽  
Significant Difference ◽  
Conventional Instrumentation ◽  
Total Knee

Patient Specific Instrumentation (PSI) may contribute to reduce blood loss after total knee replacement (TKR) by avoiding violation of the medullary canal. The purpose of the study was to compare the hemoglobin (Hb) decrease in two groups of patients undergoing TKR with PSI and conventional instrumentation.Pre- and post-operative blood samples were collected for twenty-two patients randomly assigned to receive a PSI-assisted or conventional TKR. Post- to preoperative Hb difference was calculated.A significant difference in Hb reduction in favor of the PSI group was registered on the last day of stay but not on the previous post-operative days: these promising results suggest a beneficial effect of PSI in blood loss reduction. PSI may hence be considered among the strategies available to control and reduce blood loss related to TKR.

A review of rapid prototyped surgical guides for patient-specific total knee replacement

2012 ◽  
Vol 94-B (11) ◽  
pp. 1457-1461 ◽  
Author(s):  
S. P. Krishnan ◽  
A. Dawood ◽  
R. Richards ◽  
J. Henckel ◽  
A. J. Hart
Keyword(s):  
Total Knee Replacement ◽  
Knee Replacement ◽  
Patient Specific ◽  
Surgical Guides ◽  
Total Knee

scholarly journals No radiological and clinical advantages with patient-specific positioning guides in total knee replacement

2017 ◽  
Vol 89 (1) ◽  
pp. 89-94 ◽  
Author(s):  
Justin A M J Van Leeuwen ◽  
Finnur Snorrason ◽  
Stephan M Röhrl
Keyword(s):  
Total Knee Replacement ◽  
Knee Replacement ◽  
Patient Specific ◽  
Total Knee
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