What Have We Learned from LCS Mobile-bearing Knee System?

Overview

Journal Knee Surg Sports Traumatol Arthrosc

Publisher Wiley

Specialties Emergency Medicine
General Surgery
Orthopedics

Date 2010 Jun 18

PMID 20556357

Citations 4

Authors

Woo-Shin Cho

Yoon-Seok Youm

Sung-Chan Ahn

Dong-Wook Sohn

Affiliations

Soon will be listed here.

Abstract

Three hundred and sixty-four low contact stress (LCS) total knee arthroplasties that could be followed up for more than 5 years were clinically and radiographically analyzed. The median postoperative Hospital for Special Surgery score improved from 56 (range 32-77) to 91 (range 64-100) points, but median range of motion did not change from 120° (range 50°-135°) to 120° (range 85°-135°). Complications occurred in 16 cases (4%), and included postoperative polyethylene dislocation and intraoperative tibial condylar fracture, while five knees (1%) required revision surgery due to mechanical reasons. The overall prosthesis survival rate was 91% at 12 years. Although the LCS mobile-bearing knee system has theoretical advantages in terms of wear and loosening, the problem of polyethylene dislocation, intraoperative tibial fracture, and radiolucent lines should be solved for long survival. The clinical relevance of this study is that the LCS system provided good clinical and survival results.

Citing Articles

No difference in clinical outcome, pain, and range of motion between fixed and mobile bearing Attune total knee arthroplasty: a prospective single-center trial.

Ruckenstuhl P, Revelant F, Hauer G, Bernhardt G, Leitner L, Gruber G BMC Musculoskelet Disord. 2022; 23(1):413.

PMID: 35501786 PMC: 9063062. DOI: 10.1186/s12891-022-05382-x.

Migration and clinical outcome of mobile-bearing versus fixed-bearing single-radius total knee arthroplasty.

Van Hamersveld K, Marang-van de Mheen P, van der Heide H, Van Der Linden-Van Der Zwaag H, Valstar E, Nelissen R Acta Orthop. 2018; 89(2):190-196.

PMID: 29448880 PMC: 5901517. DOI: 10.1080/17453674.2018.1429108.

Higher forgotten joint score for fixed-bearing than for mobile-bearing total knee arthroplasty.

Thienpont E, Zorman D Knee Surg Sports Traumatol Arthrosc. 2015; 24(8):2641-5.

PMID: 26037546 DOI: 10.1007/s00167-015-3663-z.

PCL balancing, an example of the need to couple detailed biomechanical parameters with clinical functional outcome.

Heesterbeek P, Wymenga A Knee Surg Sports Traumatol Arthrosc. 2010; 18(10):1301-3.

PMID: 20802994 DOI: 10.1007/s00167-010-1254-6.

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