Accuracy of Patient Specific Cutting Blocks in Total Knee Arthroplasty
Joint Authors
Helmy, Naeder
Dao Trong, Mai Lan
Kühnel, Stefanie P.
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-08-31
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Long-term survival of total knee arthroplasty (TKA) is mainly determined by optimal positioning of the components and prosthesis alignment.
Implant positioning can be optimized by computer assisted surgery (CAS).
Patient specific cutting blocks (PSCB) seem to have the potential to improve component alignment compared to the conventional technique and to be comparable to CAS.
Methods.
113 knees were selected for PSI and included in this study.
Pre- and postoperative mechanical axis, represented by the hip-knee-angle (HKA), the proximal tibial angle (PTA), the distal femoral angle (DFA), and the tibial slope (TS) were measured and the deviation from expected ideal values was calculated.
Results.
With a margin of error of ±3°, success rates were 81.4% for HKA, 92.0% for TPA, and 94.7% for DFA.
With the margin of error for alignments extended to ±4°, we obtained a success rate of 92.9% for the HKA, 98.2% for the PTA, and 99.1% for the DFA.
The TS showed postoperative results of 2.86 ± 2.02° (mean change 1.76 ± 2.85°).
Conclusion.
PSCBs for TKA seem to restore the overall leg alignment.
Our data suggest that each individual component can be implanted accurately and the results are comparable to the ones in CAS.
American Psychological Association (APA)
Helmy, Naeder& Dao Trong, Mai Lan& Kühnel, Stefanie P.. 2014. Accuracy of Patient Specific Cutting Blocks in Total Knee Arthroplasty. BioMed Research International،Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1016365
Modern Language Association (MLA)
Helmy, Naeder…[et al.]. Accuracy of Patient Specific Cutting Blocks in Total Knee Arthroplasty. BioMed Research International No. 2014 (2014), pp.1-10.
https://search.emarefa.net/detail/BIM-1016365
American Medical Association (AMA)
Helmy, Naeder& Dao Trong, Mai Lan& Kühnel, Stefanie P.. Accuracy of Patient Specific Cutting Blocks in Total Knee Arthroplasty. BioMed Research International. 2014. Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1016365
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1016365