Comparison of Limb and Component Alignment Using Computer-Assisted Navigation Versus Image Intensifier-Guided Conventional Total Knee Arthroplasty. A Prospective, Randomized, Single-Surgeon Study of 467 Knees

Arun Mullaji; Raj Kanna; Satyajit Marawar; Anirudh Kohli; Amit Sharma

doi:10.1016/j.arth.2007.04.030

Comparison of Limb and Component Alignment Using Computer-Assisted Navigation Versus Image Intensifier-Guided Conventional Total Knee Arthroplasty. A Prospective, Randomized, Single-Surgeon Study of 467 Knees

Arun Mullaji
, Raj Kanna
, Satyajit Marawar
, Anirudh Kohli
, Amit Sharma

Research output: Contribution to journal › Article › peer-review

95 Scopus citations

Abstract

Total knee arthroplasty was performed in 282 knees with image-free navigation (group A) and in 185 with optimized conventional technique (group B). Mean postoperative mechanical axis of the limb was 179.7° in group A and 179.1° in group B (P < .002). There was a higher percentage of knees in group A that had restoration of mechanical axis to ±1°, ±2°, and ±3° of neutral (P < .0001). There were 9.2% outliers (±3°) in group A and 21.6% outliers in group B (P < .0001). For knees exceeding 20° varus, there was no significant difference between the mean mechanical axes in the 2 groups. Both components were aligned within 3° of neutral in 90.8% of the knees in group A and 76.2% of the knees in group B (P < .0001).

Original language	English (US)
Pages (from-to)	953-959
Number of pages	7
Journal	Journal of Arthroplasty
Volume	22
Issue number	7
DOIs	https://doi.org/10.1016/j.arth.2007.04.030
State	Published - Oct 2007
Externally published	Yes

Keywords

computer-assisted surgery
coronal alignment
mechanical axis
total knee arthroplasty

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10.1016/j.arth.2007.04.030

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Comparison of Limb and Component Alignment Using Computer-Assisted Navigation Versus Image Intensifier-Guided Conventional Total Knee Arthroplasty. A Prospective, Randomized, Single-Surgeon Study of 467 Knees. / Mullaji, Arun; Kanna, Raj; Marawar, Satyajit et al.
In: Journal of Arthroplasty, Vol. 22, No. 7, 10.2007, p. 953-959.

Research output: Contribution to journal › Article › peer-review

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title = "Comparison of Limb and Component Alignment Using Computer-Assisted Navigation Versus Image Intensifier-Guided Conventional Total Knee Arthroplasty. A Prospective, Randomized, Single-Surgeon Study of 467 Knees",

abstract = "Total knee arthroplasty was performed in 282 knees with image-free navigation (group A) and in 185 with optimized conventional technique (group B). Mean postoperative mechanical axis of the limb was 179.7° in group A and 179.1° in group B (P < .002). There was a higher percentage of knees in group A that had restoration of mechanical axis to ±1°, ±2°, and ±3° of neutral (P < .0001). There were 9.2\% outliers (±3°) in group A and 21.6\% outliers in group B (P < .0001). For knees exceeding 20° varus, there was no significant difference between the mean mechanical axes in the 2 groups. Both components were aligned within 3° of neutral in 90.8\% of the knees in group A and 76.2\% of the knees in group B (P < .0001).",

keywords = "computer-assisted surgery, coronal alignment, mechanical axis, total knee arthroplasty",

author = "Arun Mullaji and Raj Kanna and Satyajit Marawar and Anirudh Kohli and Amit Sharma",

year = "2007",

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doi = "10.1016/j.arth.2007.04.030",

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T1 - Comparison of Limb and Component Alignment Using Computer-Assisted Navigation Versus Image Intensifier-Guided Conventional Total Knee Arthroplasty. A Prospective, Randomized, Single-Surgeon Study of 467 Knees

AU - Mullaji, Arun

AU - Kanna, Raj

AU - Marawar, Satyajit

AU - Kohli, Anirudh

AU - Sharma, Amit

PY - 2007/10

Y1 - 2007/10

N2 - Total knee arthroplasty was performed in 282 knees with image-free navigation (group A) and in 185 with optimized conventional technique (group B). Mean postoperative mechanical axis of the limb was 179.7° in group A and 179.1° in group B (P < .002). There was a higher percentage of knees in group A that had restoration of mechanical axis to ±1°, ±2°, and ±3° of neutral (P < .0001). There were 9.2% outliers (±3°) in group A and 21.6% outliers in group B (P < .0001). For knees exceeding 20° varus, there was no significant difference between the mean mechanical axes in the 2 groups. Both components were aligned within 3° of neutral in 90.8% of the knees in group A and 76.2% of the knees in group B (P < .0001).

AB - Total knee arthroplasty was performed in 282 knees with image-free navigation (group A) and in 185 with optimized conventional technique (group B). Mean postoperative mechanical axis of the limb was 179.7° in group A and 179.1° in group B (P < .002). There was a higher percentage of knees in group A that had restoration of mechanical axis to ±1°, ±2°, and ±3° of neutral (P < .0001). There were 9.2% outliers (±3°) in group A and 21.6% outliers in group B (P < .0001). For knees exceeding 20° varus, there was no significant difference between the mean mechanical axes in the 2 groups. Both components were aligned within 3° of neutral in 90.8% of the knees in group A and 76.2% of the knees in group B (P < .0001).

KW - computer-assisted surgery

KW - coronal alignment

KW - mechanical axis

KW - total knee arthroplasty

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Comparison of Limb and Component Alignment Using Computer-Assisted Navigation Versus Image Intensifier-Guided Conventional Total Knee Arthroplasty. A Prospective, Randomized, Single-Surgeon Study of 467 Knees

Abstract

Keywords

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