Does knee stability in the coronal plane in extension affect function and outcome after total knee arthroplasty?

Verfasser / Beitragende:
[Hiroyuki Nakahara, Ken Okazaki, Satoshi Hamai, Shigetoshi Okamoto, Umito Kuwashima, Hidehiko Higaki, Yukihide Iwamoto]
Ort, Verlag, Jahr:
2015
Enthalten in:
Knee Surgery, Sports Traumatology, Arthroscopy, 23/6(2015-06-01), 1693-1698
Format:
Artikel (online)
ID: 605456267
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024 7 0 |a 10.1007/s00167-014-3122-2  |2 doi 
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245 0 0 |a Does knee stability in the coronal plane in extension affect function and outcome after total knee arthroplasty?  |h [Elektronische Daten]  |c [Hiroyuki Nakahara, Ken Okazaki, Satoshi Hamai, Shigetoshi Okamoto, Umito Kuwashima, Hidehiko Higaki, Yukihide Iwamoto] 
520 3 |a Purpose: The aim of the present study was to clarify whether varus-valgus laxities under static stress in extension, femoral condylar lift-off during walking, and patient-reported outcomes after total knee arthroplasty (TKA) were correlated with each other. Methods: Ninety-four knees, which had undergone posterior-stabilized TKA, were analysed. The varus-valgus laxity during knee extension was measured using a stress radiograph. New Knee Society Score (KSS) questionnaires were mailed to all patients. Correlations between the values of stress radiographs and KSS were analysed. Additionally, continuous radiological images were taken of 15 patients while each walked on a treadmill to determine condylar lift-off from the tibial tray using a 3D-to-2D image-to-model registration technique. Correlations between the amount of lift-off and either the stress radiograph or the KSS were also analyzed. Results: The mean angle measured was 5.9±2.7° with varus stress and 5.0±1.6° with valgus stress. The difference between them was 0.9±2.8°. Varus-valgus laxities, or the differences between them, did not show any statistically significant correlation with either component of the KSS (p>0.05). The average amount of femoral condylar lift-off during walking was 1.4±0.8mm (medial side) and 1.3±0.6mm (lateral side). The amount of lift-off did not correlate with either varus-valgus laxities or the KSS (p>0.05). Conclusions: No correlations were found among varus-valgus laxities under static stress in extension, femoral condylar lift-off during walking, or patient-reported outcomes after well-aligned TKA. This study suggests that small variations in coronal laxities do not influence lift-off during walking and the patient-reported outcomes. Level of evidence: IV. 
540 |a Springer-Verlag Berlin Heidelberg, 2014 
690 7 |a Total knee arthroplasty  |2 nationallicence 
690 7 |a Coronal laxity  |2 nationallicence 
690 7 |a Lift-off  |2 nationallicence 
690 7 |a Walking  |2 nationallicence 
690 7 |a Patient-reported outcome  |2 nationallicence 
700 1 |a Nakahara  |D Hiroyuki  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
700 1 |a Okazaki  |D Ken  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
700 1 |a Hamai  |D Satoshi  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
700 1 |a Okamoto  |D Shigetoshi  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
700 1 |a Kuwashima  |D Umito  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
700 1 |a Higaki  |D Hidehiko  |u Department of Biorobotics, Faculty of Engineering, Kyushu Sangyo University, Fukuoka, Japan  |4 aut 
700 1 |a Iwamoto  |D Yukihide  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
773 0 |t Knee Surgery, Sports Traumatology, Arthroscopy  |d Springer Berlin Heidelberg  |g 23/6(2015-06-01), 1693-1698  |x 0942-2056  |q 23:6<1693  |1 2015  |2 23  |o 167 
856 4 0 |u https://doi.org/10.1007/s00167-014-3122-2  |q text/html  |z Onlinezugriff via DOI 
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900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
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950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00167-014-3122-2  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Nakahara  |D Hiroyuki  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Okazaki  |D Ken  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Hamai  |D Satoshi  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Okamoto  |D Shigetoshi  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kuwashima  |D Umito  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Higaki  |D Hidehiko  |u Department of Biorobotics, Faculty of Engineering, Kyushu Sangyo University, Fukuoka, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Iwamoto  |D Yukihide  |u Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, 812-8582, Fukuoka, Japan  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Knee Surgery, Sports Traumatology, Arthroscopy  |d Springer Berlin Heidelberg  |g 23/6(2015-06-01), 1693-1698  |x 0942-2056  |q 23:6<1693  |1 2015  |2 23  |o 167