Evaluation of limb alignment, component positioning, and function in primary total knee arthroplasty using a pinless navigation technique compared with conventional methods.

Brian J. Keyes, David C. Markel, R. Meneghini

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The purpose of this study was to examine component positioning, limb alignment, and the early functional range of motion of a pinless image-free computer-assisted navigation system, and compare it to conventional intramedullary component alignment methods. A total of 72 patients underwent cemented total knee arthroplasty. The pinless navigation group consisted of 40 knees in 39 patients, while the conventional group comprised 33 knees in 33 patients. Preoperative and postoperative radiographs were evaluated for coronal and sagittal alignment. Functional assessment was evaluated by early postoperative range of motion. There was no statistical significance when examining individual component alignment or early functional range of motion. When evaluating ability to achieve overall anatomic tibiofemoral alignment within a range of 4 to 7 degrees valgus, the conventional group was able to accomplish this 39% of the time, whereas the pinless navigation group succeeded in 65% of cases (p <0.03). The tourniquet time was mean 59.5 minutes (range: 48 to 77 minutes) for the conventional group, compared with mean 71.9 minutes (range: 54 to 97 minutes) for the navigation group (p <0.0001, 95% CI). The pinless navigation technique improved coronal anatomic alignment without complications that have been cited with use of femoral or tibial reference tracker pins or intramedullary alignment guides. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Original languageEnglish (US)
Pages (from-to)127-132
Number of pages6
JournalThe journal of knee surgery
Volume26
Issue number2
DOIs
StatePublished - Apr 2013
Externally publishedYes

Fingerprint

Knee Replacement Arthroplasties
Articular Range of Motion
Extremities
Knee
Tourniquets
Thigh

ASJC Scopus subject areas

  • Medicine(all)

Cite this

@article{d039d40999164aba8af740d2f87fd4d3,
title = "Evaluation of limb alignment, component positioning, and function in primary total knee arthroplasty using a pinless navigation technique compared with conventional methods.",
abstract = "The purpose of this study was to examine component positioning, limb alignment, and the early functional range of motion of a pinless image-free computer-assisted navigation system, and compare it to conventional intramedullary component alignment methods. A total of 72 patients underwent cemented total knee arthroplasty. The pinless navigation group consisted of 40 knees in 39 patients, while the conventional group comprised 33 knees in 33 patients. Preoperative and postoperative radiographs were evaluated for coronal and sagittal alignment. Functional assessment was evaluated by early postoperative range of motion. There was no statistical significance when examining individual component alignment or early functional range of motion. When evaluating ability to achieve overall anatomic tibiofemoral alignment within a range of 4 to 7 degrees valgus, the conventional group was able to accomplish this 39{\%} of the time, whereas the pinless navigation group succeeded in 65{\%} of cases (p <0.03). The tourniquet time was mean 59.5 minutes (range: 48 to 77 minutes) for the conventional group, compared with mean 71.9 minutes (range: 54 to 97 minutes) for the navigation group (p <0.0001, 95{\%} CI). The pinless navigation technique improved coronal anatomic alignment without complications that have been cited with use of femoral or tibial reference tracker pins or intramedullary alignment guides. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.",
author = "Keyes, {Brian J.} and Markel, {David C.} and R. Meneghini",
year = "2013",
month = "4",
doi = "10.1055/s-0032-1319788",
language = "English (US)",
volume = "26",
pages = "127--132",
journal = "Journal of Knee Surgery",
issn = "1538-8506",
publisher = "Thieme Medical Publishers",
number = "2",

}

TY - JOUR

T1 - Evaluation of limb alignment, component positioning, and function in primary total knee arthroplasty using a pinless navigation technique compared with conventional methods.

AU - Keyes, Brian J.

AU - Markel, David C.

AU - Meneghini, R.

PY - 2013/4

Y1 - 2013/4

N2 - The purpose of this study was to examine component positioning, limb alignment, and the early functional range of motion of a pinless image-free computer-assisted navigation system, and compare it to conventional intramedullary component alignment methods. A total of 72 patients underwent cemented total knee arthroplasty. The pinless navigation group consisted of 40 knees in 39 patients, while the conventional group comprised 33 knees in 33 patients. Preoperative and postoperative radiographs were evaluated for coronal and sagittal alignment. Functional assessment was evaluated by early postoperative range of motion. There was no statistical significance when examining individual component alignment or early functional range of motion. When evaluating ability to achieve overall anatomic tibiofemoral alignment within a range of 4 to 7 degrees valgus, the conventional group was able to accomplish this 39% of the time, whereas the pinless navigation group succeeded in 65% of cases (p <0.03). The tourniquet time was mean 59.5 minutes (range: 48 to 77 minutes) for the conventional group, compared with mean 71.9 minutes (range: 54 to 97 minutes) for the navigation group (p <0.0001, 95% CI). The pinless navigation technique improved coronal anatomic alignment without complications that have been cited with use of femoral or tibial reference tracker pins or intramedullary alignment guides. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

AB - The purpose of this study was to examine component positioning, limb alignment, and the early functional range of motion of a pinless image-free computer-assisted navigation system, and compare it to conventional intramedullary component alignment methods. A total of 72 patients underwent cemented total knee arthroplasty. The pinless navigation group consisted of 40 knees in 39 patients, while the conventional group comprised 33 knees in 33 patients. Preoperative and postoperative radiographs were evaluated for coronal and sagittal alignment. Functional assessment was evaluated by early postoperative range of motion. There was no statistical significance when examining individual component alignment or early functional range of motion. When evaluating ability to achieve overall anatomic tibiofemoral alignment within a range of 4 to 7 degrees valgus, the conventional group was able to accomplish this 39% of the time, whereas the pinless navigation group succeeded in 65% of cases (p <0.03). The tourniquet time was mean 59.5 minutes (range: 48 to 77 minutes) for the conventional group, compared with mean 71.9 minutes (range: 54 to 97 minutes) for the navigation group (p <0.0001, 95% CI). The pinless navigation technique improved coronal anatomic alignment without complications that have been cited with use of femoral or tibial reference tracker pins or intramedullary alignment guides. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

UR - http://www.scopus.com/inward/record.url?scp=84883018784&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84883018784&partnerID=8YFLogxK

U2 - 10.1055/s-0032-1319788

DO - 10.1055/s-0032-1319788

M3 - Article

VL - 26

SP - 127

EP - 132

JO - Journal of Knee Surgery

JF - Journal of Knee Surgery

SN - 1538-8506

IS - 2

ER -