Patient-specific Instrumentation Improves Tibial Component Rotation in TKA

Overview

Journal Knee Surg Sports Traumatol Arthrosc

Publisher Wiley

Specialties Emergency Medicine
General Surgery
Orthopedics

Date 2013 Aug 31

PMID 23989707

Citations 24

Authors

Alcindo Silva

Ricardo Sampaio

Elisabete Pinto

Affiliations

Soon will be listed here.

Abstract

Purpose: To compare the femoral and tibial components rotational alignment in total knee arthroplasty (TKA) performed either with conventional or with patient-specific instrumentation.

Methods: Forty-five patients underwent primary TKA and were prospectively randomized into two groups: 22 patients into the conventional instrumentation group (group A) and 23 patients into the Signature™ patient-specific instrumentation group (group B). All patients underwent computed tomography of the operated knee in the first week after surgery to measure the components rotation.

Results: The femoral component rotation was 0.0° (-0.25, 1.0) in group A, and 0.0° (0.0, 1.0) in group B. The tibial component rotation was -16.0° (-18.5, 11.8) in group A, and -16.0° (-19.0, -14.0) in group B. There were no significant differences between the two groups in tibial and femoral components rotation. The difference between the tibial component rotation and the neutral tibial rotation was similar in both groups [2.0° (-0.5, 6.3) in group A and 2.0° (-1.0, 4.0) in group B], but the dispersion around the median was different between the two groups. The amplitude of the difference between tibial rotation and neutral position was 27° (-13, 14) in group A and 9° (-3, 6) in group B.

Conclusions: There is a smaller chance of internal malrotation of the tibial component with the Signature™ patient-specific instrumentation system, with less dispersion and amplitude of the tibial component rotation around the neutral position.

Level Of Evidence: II.

Citing Articles

Patient-specific instrumentation for total knee arthroplasty improves reproducibility in the planned rotational positioning of the tibial component.

Sotozawa M, Kumagai K, Yamada S, Nejima S, Inaba Y J Orthop Surg Res. 2022; 17(1):403.

PMID: 36064582 PMC: 9446751. DOI: 10.1186/s13018-022-03298-9.

Patient-Specific Instrumentation Accuracy Evaluated with 3D Virtual Models.

Leon-Munoz V, Parrinello A, Manca S, Galloni G, Lopez-Lopez M, Martinez-Martinez F J Clin Med. 2021; 10(7).

PMID: 33916110 PMC: 8036812. DOI: 10.3390/jcm10071439.

Evaluation of the accuracy of resected bone thickness based on patient-specific instrumentation during total knee arthroplasty.

Yamamura K, Inori F, Konishi S Arch Orthop Trauma Surg. 2021; 141(9):1583-1590.

PMID: 33547928 DOI: 10.1007/s00402-021-03805-3.

[Progress in the method of tibial prosthesis rotation alignment in total knee arthroplasty].

Liu X, Guo S, Li S, Cao Y, Xiang C Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. 2020; 34(9):1200-1204.

PMID: 32929917 PMC: 8171723. DOI: 10.7507/1002-1892.201911058.

Design improvement in patient-specific instrumentation for total knee arthroplasty improved the accuracy of the tibial prosthetic alignment in the coronal and axial planes.

Yamamura K, Minoda Y, Sugama R, Ohta Y, Nakamura S, Ueyama H Knee Surg Sports Traumatol Arthrosc. 2019; 28(5):1560-1567.

PMID: 31240377 DOI: 10.1007/s00167-019-05571-7.

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