Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Arthroplasty - Knee
Abstract number: 26248
AN 11-YEAR FOLLOW-UP OF MILLER-GALANTE (MG) II PROSTHESIS IN
PRIMARY TOTAL KNEE ARTHROPLASTY
Yoshinaga EGAWA 1 , Hiromoto ITO 2 , Kazufumi MINAMI 3 , Atsushi MORI 2 , Norishige
IIZAWA 2 , Yong KIM 2
1 Shinmatsudo General Central Hospital Dept. of Orthopaedic Surg., Matsudo City
CHIBA (JAPAN), 2 Nippon Medical School Dept. of Orthopaedic surg., Tokyo
(JAPAN), 3 Nippon Medical School Chiba Hokusoh Hospital Dept. of Orthopaedic
surg., CHIBA (JAPAN)
Objective: We report the long-term results of MGII prosthesis in primary total knee
Arthroplasty. Subjects and Methods: A hundred and ninety-eight TKA were
performed between 1993 and 1997. Thirty-eight knees in 28 patients could be
followed up for more than 10 years. The mean ages at the surgery were 68 years (53
to 78 years). The mean follow-up periods were 11 years and 6 months (10 to 14
years). For clinical evaluation, range of motion and the Knee Society rating score
were used. For radiographic evaluation the Knee Society radiographic evaluation
system was used. In order to assess the fixation of the prosthesis, the width of clear
zone were measured. Results: No revision surgery was required during follow-up
period. The ranges of motion were 99 degrees before the surgery and 95 degrees at
the final observation. The Knee Society rating score improved from 46 points to 66
points. The position of the implant was maintained at the final follow-up. A radiolucent
line was seen in 29.0% knees. Discussion: MGI prosthesis experienced a revision
surgery in many patients, because of wearing of the dome-shaped metal-backed
patella. The shape of the patellar fossa has been improved to increase the
congruency of the patello-femoral joint. Additionally, conformed and all-polyethylene
patellar components have been introduced to achieve the long-term durability of MGII
prosthesis. Conclusion: Eleven-year results of MGII prostheses were clinically
favorable.
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