Mid-term clinical outcome of constrained condylar knee prosthesis for patients with rheumatoid arthritis

Toshifumi Fujiwara, Kenjiro Fujimura, Satoshi Hamai, Satoshi Kamura, Yasuharu Nakashima, Hisaaki Miyahara

Research output: Contribution to journalArticle

Abstract

Objectives: This study retrospectively investigated the mid-term outcome of Legacy constrained condylar knee (LCCK) prosthesis in patients with rheumatoid arthritis (RA) having severe varus/valgus deformity, instability, and/or bone loss. Methods: Between January 2000 and December 2015, LCCK prostheses had been performed in 32 knees of 25 patients with RA, and 23 knees of 17 patients of the postoperative follow-up minimum 2 years were analyzed in this study (Primary: 14 knees, Revision: 9 knees). The average of follow-up duration was 6.9 ± 2.7 years, all were female, and the average of age and RA duration at the surgery was 59.0 ± 9.5 years and 26.6 ± 13.5 years, respectively. Clinical result was analyzed by Knee Society Score (KSS) knee and function at preoperative time and final visit. Imaging outcome was investigated by femoral tibial angle (FTA), four component alignment angles, and radiolucent line at pre-/postoperative time. Results: KSS knee/function scores and radiographic FTAs were improved after operation. Radiolucent lines around components were seen in 17 knees (73.9%), of which only one knee (4.3%) has shown aseptic loosening. The seven-year Kaplan-Meier survivorship analysis resulted in 91.7%. Conclusion: LCCK prosthesis in RA patients was achieved to the excellent mid-term clinical and radiographic result.

Original languageEnglish
Pages (from-to)596-601
Number of pages6
JournalModern Rheumatology
Volume29
Issue number4
DOIs
Publication statusPublished - Jul 4 2019

Fingerprint

Knee Prosthesis
Rheumatoid Arthritis
Knee
Kaplan-Meier Estimate
Thigh
Survival Rate
Bone and Bones

All Science Journal Classification (ASJC) codes

  • Rheumatology

Cite this

Mid-term clinical outcome of constrained condylar knee prosthesis for patients with rheumatoid arthritis. / Fujiwara, Toshifumi; Fujimura, Kenjiro; Hamai, Satoshi; Kamura, Satoshi; Nakashima, Yasuharu; Miyahara, Hisaaki.

In: Modern Rheumatology, Vol. 29, No. 4, 04.07.2019, p. 596-601.

Research output: Contribution to journalArticle

@article{1e1b7c4aa0964a18ad188dea705bcc73,
title = "Mid-term clinical outcome of constrained condylar knee prosthesis for patients with rheumatoid arthritis",
abstract = "Objectives: This study retrospectively investigated the mid-term outcome of Legacy constrained condylar knee (LCCK) prosthesis in patients with rheumatoid arthritis (RA) having severe varus/valgus deformity, instability, and/or bone loss. Methods: Between January 2000 and December 2015, LCCK prostheses had been performed in 32 knees of 25 patients with RA, and 23 knees of 17 patients of the postoperative follow-up minimum 2 years were analyzed in this study (Primary: 14 knees, Revision: 9 knees). The average of follow-up duration was 6.9 ± 2.7 years, all were female, and the average of age and RA duration at the surgery was 59.0 ± 9.5 years and 26.6 ± 13.5 years, respectively. Clinical result was analyzed by Knee Society Score (KSS) knee and function at preoperative time and final visit. Imaging outcome was investigated by femoral tibial angle (FTA), four component alignment angles, and radiolucent line at pre-/postoperative time. Results: KSS knee/function scores and radiographic FTAs were improved after operation. Radiolucent lines around components were seen in 17 knees (73.9{\%}), of which only one knee (4.3{\%}) has shown aseptic loosening. The seven-year Kaplan-Meier survivorship analysis resulted in 91.7{\%}. Conclusion: LCCK prosthesis in RA patients was achieved to the excellent mid-term clinical and radiographic result.",
author = "Toshifumi Fujiwara and Kenjiro Fujimura and Satoshi Hamai and Satoshi Kamura and Yasuharu Nakashima and Hisaaki Miyahara",
year = "2019",
month = "7",
day = "4",
doi = "10.1080/14397595.2018.1486954",
language = "English",
volume = "29",
pages = "596--601",
journal = "Modern Rheumatology",
issn = "1439-7595",
publisher = "Springer Japan",
number = "4",

}

TY - JOUR

T1 - Mid-term clinical outcome of constrained condylar knee prosthesis for patients with rheumatoid arthritis

AU - Fujiwara, Toshifumi

AU - Fujimura, Kenjiro

AU - Hamai, Satoshi

AU - Kamura, Satoshi

AU - Nakashima, Yasuharu

AU - Miyahara, Hisaaki

PY - 2019/7/4

Y1 - 2019/7/4

N2 - Objectives: This study retrospectively investigated the mid-term outcome of Legacy constrained condylar knee (LCCK) prosthesis in patients with rheumatoid arthritis (RA) having severe varus/valgus deformity, instability, and/or bone loss. Methods: Between January 2000 and December 2015, LCCK prostheses had been performed in 32 knees of 25 patients with RA, and 23 knees of 17 patients of the postoperative follow-up minimum 2 years were analyzed in this study (Primary: 14 knees, Revision: 9 knees). The average of follow-up duration was 6.9 ± 2.7 years, all were female, and the average of age and RA duration at the surgery was 59.0 ± 9.5 years and 26.6 ± 13.5 years, respectively. Clinical result was analyzed by Knee Society Score (KSS) knee and function at preoperative time and final visit. Imaging outcome was investigated by femoral tibial angle (FTA), four component alignment angles, and radiolucent line at pre-/postoperative time. Results: KSS knee/function scores and radiographic FTAs were improved after operation. Radiolucent lines around components were seen in 17 knees (73.9%), of which only one knee (4.3%) has shown aseptic loosening. The seven-year Kaplan-Meier survivorship analysis resulted in 91.7%. Conclusion: LCCK prosthesis in RA patients was achieved to the excellent mid-term clinical and radiographic result.

AB - Objectives: This study retrospectively investigated the mid-term outcome of Legacy constrained condylar knee (LCCK) prosthesis in patients with rheumatoid arthritis (RA) having severe varus/valgus deformity, instability, and/or bone loss. Methods: Between January 2000 and December 2015, LCCK prostheses had been performed in 32 knees of 25 patients with RA, and 23 knees of 17 patients of the postoperative follow-up minimum 2 years were analyzed in this study (Primary: 14 knees, Revision: 9 knees). The average of follow-up duration was 6.9 ± 2.7 years, all were female, and the average of age and RA duration at the surgery was 59.0 ± 9.5 years and 26.6 ± 13.5 years, respectively. Clinical result was analyzed by Knee Society Score (KSS) knee and function at preoperative time and final visit. Imaging outcome was investigated by femoral tibial angle (FTA), four component alignment angles, and radiolucent line at pre-/postoperative time. Results: KSS knee/function scores and radiographic FTAs were improved after operation. Radiolucent lines around components were seen in 17 knees (73.9%), of which only one knee (4.3%) has shown aseptic loosening. The seven-year Kaplan-Meier survivorship analysis resulted in 91.7%. Conclusion: LCCK prosthesis in RA patients was achieved to the excellent mid-term clinical and radiographic result.

UR - http://www.scopus.com/inward/record.url?scp=85050571312&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85050571312&partnerID=8YFLogxK

U2 - 10.1080/14397595.2018.1486954

DO - 10.1080/14397595.2018.1486954

M3 - Article

AN - SCOPUS:85050571312

VL - 29

SP - 596

EP - 601

JO - Modern Rheumatology

JF - Modern Rheumatology

SN - 1439-7595

IS - 4

ER -