The variability of intramedullary alignment of the femoral component during total knee arthroplasty

William Mihalko, James Boyle, Lindsey D. Clark, Kenneth A. Krackow

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

Intramedullary instrumentation for femoral component alignment during total knee arthroplasty is readily used. Newer alignment techniques using computer navigation are now available. This study assesses the difference in the sagittal and coronal plane alignments using a cadaveric model with 3 different entry points for intramedullary alignment compared with a navigation system. Seven cadaveric limb's results show that the anterior starting point resulted in recurvatum (-2.2° ± 1.4°), the middle starting point resulted in 1.9° ± 2.2° of flexion, and the posterior starting point in 3.8° ± 2.6° of flexion compared with the calculated femoral axis by the computer navigation system. When comparing the valgus angle, no statistical difference between any methods resulted (average 5.2° ± 0.9° valgus). The anterior and posterior starting points were significantly different in the sagittal plane. These data suggest that alignment can be significantly affected by the starting point chosen for intramedullary instrumentation.

Original languageEnglish (US)
Pages (from-to)25-28
Number of pages4
JournalJournal of Arthroplasty
Volume20
Issue number1
DOIs
StatePublished - Jan 1 2005
Externally publishedYes

Fingerprint

Knee Replacement Arthroplasties
Thigh
Computer Systems
Extremities

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine
  • Surgery

Cite this

The variability of intramedullary alignment of the femoral component during total knee arthroplasty. / Mihalko, William; Boyle, James; Clark, Lindsey D.; Krackow, Kenneth A.

In: Journal of Arthroplasty, Vol. 20, No. 1, 01.01.2005, p. 25-28.

Research output: Contribution to journalArticle

Mihalko, William ; Boyle, James ; Clark, Lindsey D. ; Krackow, Kenneth A. / The variability of intramedullary alignment of the femoral component during total knee arthroplasty. In: Journal of Arthroplasty. 2005 ; Vol. 20, No. 1. pp. 25-28.
@article{dcdf8d4d9b1240a0a1bc24c8a3b0bed1,
title = "The variability of intramedullary alignment of the femoral component during total knee arthroplasty",
abstract = "Intramedullary instrumentation for femoral component alignment during total knee arthroplasty is readily used. Newer alignment techniques using computer navigation are now available. This study assesses the difference in the sagittal and coronal plane alignments using a cadaveric model with 3 different entry points for intramedullary alignment compared with a navigation system. Seven cadaveric limb's results show that the anterior starting point resulted in recurvatum (-2.2° ± 1.4°), the middle starting point resulted in 1.9° ± 2.2° of flexion, and the posterior starting point in 3.8° ± 2.6° of flexion compared with the calculated femoral axis by the computer navigation system. When comparing the valgus angle, no statistical difference between any methods resulted (average 5.2° ± 0.9° valgus). The anterior and posterior starting points were significantly different in the sagittal plane. These data suggest that alignment can be significantly affected by the starting point chosen for intramedullary instrumentation.",
author = "William Mihalko and James Boyle and Clark, {Lindsey D.} and Krackow, {Kenneth A.}",
year = "2005",
month = "1",
day = "1",
doi = "10.1016/j.arth.2004.10.011",
language = "English (US)",
volume = "20",
pages = "25--28",
journal = "Journal of Arthroplasty",
issn = "0883-5403",
publisher = "Churchill Livingstone",
number = "1",

}

TY - JOUR

T1 - The variability of intramedullary alignment of the femoral component during total knee arthroplasty

AU - Mihalko, William

AU - Boyle, James

AU - Clark, Lindsey D.

AU - Krackow, Kenneth A.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - Intramedullary instrumentation for femoral component alignment during total knee arthroplasty is readily used. Newer alignment techniques using computer navigation are now available. This study assesses the difference in the sagittal and coronal plane alignments using a cadaveric model with 3 different entry points for intramedullary alignment compared with a navigation system. Seven cadaveric limb's results show that the anterior starting point resulted in recurvatum (-2.2° ± 1.4°), the middle starting point resulted in 1.9° ± 2.2° of flexion, and the posterior starting point in 3.8° ± 2.6° of flexion compared with the calculated femoral axis by the computer navigation system. When comparing the valgus angle, no statistical difference between any methods resulted (average 5.2° ± 0.9° valgus). The anterior and posterior starting points were significantly different in the sagittal plane. These data suggest that alignment can be significantly affected by the starting point chosen for intramedullary instrumentation.

AB - Intramedullary instrumentation for femoral component alignment during total knee arthroplasty is readily used. Newer alignment techniques using computer navigation are now available. This study assesses the difference in the sagittal and coronal plane alignments using a cadaveric model with 3 different entry points for intramedullary alignment compared with a navigation system. Seven cadaveric limb's results show that the anterior starting point resulted in recurvatum (-2.2° ± 1.4°), the middle starting point resulted in 1.9° ± 2.2° of flexion, and the posterior starting point in 3.8° ± 2.6° of flexion compared with the calculated femoral axis by the computer navigation system. When comparing the valgus angle, no statistical difference between any methods resulted (average 5.2° ± 0.9° valgus). The anterior and posterior starting points were significantly different in the sagittal plane. These data suggest that alignment can be significantly affected by the starting point chosen for intramedullary instrumentation.

UR - http://www.scopus.com/inward/record.url?scp=12344295315&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=12344295315&partnerID=8YFLogxK

U2 - 10.1016/j.arth.2004.10.011

DO - 10.1016/j.arth.2004.10.011

M3 - Article

VL - 20

SP - 25

EP - 28

JO - Journal of Arthroplasty

JF - Journal of Arthroplasty

SN - 0883-5403

IS - 1

ER -