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Total Knee Arthroplasty With the Medial-Pivot Knee System — MEDIAL-PIVOT  

Arthroplasty Complications Clinical Trial

Official title:
Total Knee Arthroplasty With the Medial-Pivot Knee System: Clinicaland Radiological Outcomes at 9.5 Years' Mean Follow-up

Clinical Trial Summary

The "ball-in-socket" design of the Medial-Pivot knee system (MicroPort Orthopedics, Arling-ton, Tennessee, USA) aims to reproduce normal knee kinematics by medializing its rotational axis. Thegoal of this study was to measure knee range of motion (ROM) with this implant after a mean follow-up of 10 years and to report the survivorship and long-term clinical and radiological outcomes. Wehypothesized the prosthetic knee would have at least 120◦flexion at 10 years. This was retrospective, single-centre study of 74 Medial-Pivot knees implanted in71 patients (average age of 69 years) between May 2005 and November 2007. All patients who receiveda Medial-Pivot knee were included consecutively. The mean follow-up was 10 years. Clinical and radio-logical assessments were performed using the Knee Society Score (KSS) and Ewald's score. Kaplan-Meirsurvival analysis was used to calculate survivorship.

Clinical Trial Description

methodsThis was retrospective, single-centre study of 74 Medial-Pivotknees implanted in 71 patients between May 2005 and Novem-ber 2007. During this period, several types of semi-constrainedprimary TKA implants were used.The "ball-in-socket" design of the Medial-Pivot knee system (MicroPort Orthopedics, Arling-ton, Tennessee, USA) aims to reproduce normal knee kinematics by medializing its rotational axis. Thegoal of this study was to measure knee range of motion (ROM) with this implant after a mean follow-up of 10 years and to report the survivorship and long-term clinical and radiological outcomes. Wehypothesized the prosthetic knee would have at least 120◦flexion at 10 years. This was retrospective, single-centre study of 74 Medial-Pivot knees implanted in71 patients (average age of 69 years) between May 2005 and November 2007. All patients who receiveda Medial-Pivot knee were included consecutively. The mean follow-up was 10 years. Clinical and radio-logical assessments were performed using the Knee Society Score (KSS) and Ewald's score. Kaplan-Meirsurvival analysis was used to calculate survivorship. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03677518
Study type Observational
Source Centre Hospitalier Universitaire, Amiens
Contact
Status Completed
Phase
Start date January 1, 2017
Completion date October 2, 2017
View Details
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