Publication: A prospective randomised controlled study of patient-specific cutting guides compared with conventional instrumentation in total knee replacement
Issued Date
2013-03-01
Resource Type
ISSN
0301620X
Other identifier(s)
2-s2.0-84874668905
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Bone and Joint Surgery - Series B. Vol.95 B, No.3 (2013), 354-359
Suggested Citation
C. Pornrattanamaneewong, K. Chareancholvanich, R. Narkbunnam A prospective randomised controlled study of patient-specific cutting guides compared with conventional instrumentation in total knee replacement. Journal of Bone and Joint Surgery - Series B. Vol.95 B, No.3 (2013), 354-359. doi:10.1302/0301-620X.95B3.29903 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/32447
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
A prospective randomised controlled study of patient-specific cutting guides compared with conventional instrumentation in total knee replacement
Other Contributor(s)
Abstract
Patient-specific cutting guides (PSCGs) are designed to improve the accuracy of alignment of total knee replacement (TKR). We compared the accuracy of limb alignment and component positioning after TKR performed using PSCGs or conventional instrumentation. A total of 80 patients were randomised to undergo TKR with either of the different forms of instrumentation, and radiological outcomes and peri-operative factors such as operating time were assessed. No significant difference was observed between the groups in terms of tibiofemoral angle or femoral component alignment. Although the tibial component in the PSCGs group was measurably closer to neutral alignment than in the conventional group, the size of the difference was very small (89.8° (SD 1.2) vs 90.5° (SD 1.6); p = 0.030). This new technology slightly shortened the bone-cutting time by a mean of 3.6 minutes (p < 0.001) and the operating time by a mean 5.1 minutes (p = 0.019), without tangible differences in post-operative blood loss (p = 0.528) or need for blood transfusion (p = 0.789). This study demonstrated that both PSCGs and conventional instrumentation restore limb alignment and place the components with the similar accuracy. The minimal advantages of PSCGs in terms of consistency of alignment or operative time are unlikely to be clinically relevant. © 2013 The British Editorial Society of Bone & Joint Surgery.